Open Source Ecology - User contributions [en]

Aquaponics

2015-03-24T14:23:00Z

John S: links to current working group on aquaponics

[http://opensourceecology.org/wiki/Aquaponics_Greenhouse_Working_Team#Team Aquaponics Greenhouse 2015 Video]

[https://docs.google.com/a/opensourceecology.org/presentation/d/1BFIuy4YyY05yFWfn-a7ursn1er2GWzvbHIB2goPpClo/edit?pli=1#slide=id.p Aquaponics Greenhouse Working Group 2015]

[http://opensourceecology.org/wiki/Aquaponics_Greenhouse_Working_Team#Collaborator_Survey NOW Sign up for Aquaponics Greenhouse Working Team 2015]

{{Category=Controlled-environment growing}}
Aquaponics is the combination of [[aquaculture]] (fish farming) and [[hydroponics]] (growing plants using water rather than soil). It is an incredibly productive means of growing food, allowing a person to sustain themselves on less than 100m<sup>2</sup>. Some people with large systems growing 5000 plants a week have reported that, once their system is set up, they earn €1000 a week spending 2 hours a day at work. Aquaponics is ecologically sound and sustainable. Scalable designs for systems are available online.

See also:

* [[Aquaponics/Research]]
* [[Aquaponics/Suggested Fish]]

==How aquaponics works==
[[File:Aquaponics.gif|center|850px]]
Edible fish are grown in a tank. Their poop enriches the water with nutrients.<br>This enriched water is pumped into gravel beds with edible plants rooted in them. As the water flows through the gravel beds, the plants' roots and the bacteria that grow on the gravel take nutrients from the water. This both nourishes the plants and cleans the water.<br>The water, now clean, flows back into the fish tank.

The system provides fish, vegetables and herbs for people. Some systems have grown fruit trees aquaponically, but this is still experimental.

==Feeding the fish==
*'''Commercially available fish food''' is the most common way of feeding the fish in aquaponics. The disadvantage is that your system then requires constant input of resources.
*'''Algae''' will grow endemically in nearly any body of still water. Fish will eat these, but in practice it is not possible to grow enough algae to sustain an aquaponic system. You can increase the fraction of the fish's requirements met by algae by providing a surface underwater for the algae to grow on. (Remember when you had a goldfish as a kid, and the little castle in his tank got covered with green stuff?) Use something with high surface area.
*'''[[Duckweed]]''', an extremely fast-growing high-protein pond weed, can be grown on the surface of the tank. There are species of duckweed adapted to nearly all climates.
*'''Insects'''. Herbs that attract insects can be grown in rafts on the surface of the fishtank. Mulberry and tea trees are used in aquaculture to attract insects as fish food.
*'''[[Worms]]''' from a compost heap can be fed to the fish. The worms can be fed with grass cuttings, food waste and other organic waste. Some of the compost from the wormery can be added to the water input to the gravel beds; this diversifies the nutrients the plants receive. Aquaponics combined with vermiculture is nearly a closed-loop system. Organic waste is converted into worms, worms into fish, fish into vegetables. The fish and the vegetables are converted into human life!
*'''[[Black Soldier Fly]] larvae'''. An integrated Black Soldier Fly and aquaponics system can turn 12kg of food waste into 1kg of delicious fish, plus the vegetables in the grow-beds.

Duckweed grows very fast and Black Soldier Fly larvae convert very efficiently. A system with a small duckweed tank, a wormery and a Black Soldier Fly bioconversion unit should have no problem getting by without buying fish food. This cuts operating costs to near zero. The more varied the fish's diet, the better they are likely to taste.

==System design==
A rule of thumb is that the volume of the gravel beds should be twice that of the fish tank. Gravel beds would typically be about 30cm deep.

Fish can normally be stocked at 2-3kg of fish per cubic meter of water.

The species of fish used depends on the climate.

==Water quality==
===Temperature===
The required temperature depends on the species of fish you want to grow. If you choose fish that are adapted to your local climate, you will save money on heating costs. Digital methods to measure temperatre, pH, dissolved oxygen, and possibly other parameters should be investigated as a way to gather information for system optimization, indications of system problems, and eventually labor savings.

===pH===
pH needs to be tested every week or more. A pH of around 6.2-6.4 is best, though this varies somewhat depending on the species of fish.

If pH gets too low, it could be a sign that parts of the gravel bed have developed anaerobic bacteria, which produce acids. If this happens, remove any plants with very large root systems, as these create pockets where air cannot get to.

If the pH is too high, it is generally a sign that the plant biofilters are not keeping up with the fish's production of ammonia. Plant more plants.

===Oxygenation===
Aquaponic systems require an air pump underwater. Having the flow from the gravel beds falling from a height and splashing into the fish tank will help oxygenate it too.

It is very important to keep the aerator pump running at all times. If the oxygen supply to the fish is cut off for just 45 minutes, you will have dead fish. For this reason, it is wise to have a backup air pump that will kick in if your pump fails. There can never be too much oxygen in the water; excess oxygen will bubble to the surface and escape.

===Nutrients===
A lot of aquaponic systems require calcium, potassium and iron to be added about every two weeks. If you have a wormery and add a little of the worm-compost to the water flowing into the gravel beds, this should provide these missing nutrients.

==Open-source systems==
* [http://farmfountain.com/howto/index.html Farm Fountain], an open-source, indoor, vertical aquaponic system.
* [http://www.fastonline.org/ Barrelponics] - Aquaponics in a barrel. Barrelponics definitely meets the [[OSE Specifications]]; it is a scalable, environmentally-friendly, open-source local food system.
* [http://blog.automicrofarm.com/ AutoMicroFarm] An open source barrelponics system under development.
* [http://theurbanfarmingguys.com/ The Urban Farming Guys] in Kansas City are developing a low-cost Aquaponics system. The [http://theurbanfarmingguys.com/aquaponics-how-to instructional video] outlines the principles of aquaponics. [http://theurbanfarmingguys.com/wiki/knowledgebase-2/aquaculture-aquaponics/aquaponics-system-plans/40-gallon-tote-basement-system Design for a small aquaponic system].
* [http://opensourceecology.org/wiki/Category:Holistic_Aquaponics_Greenhouse_Toolkit Category: Holistic Aquaponics Greenhouse Toolkit] A toolkit of commonly used system theory-based controlled environment modular technologies based on ubiquitous construction materials and open source design priniciples is being developed.

==Work to be done==
Aquaponics is still in its infancy and is developing every year. More research needs to be done into polycultured systems that can grow more than one type of fish. (Different fish require different water temperatures and pH, so some species are incompatible. However, tilapia and prawns - which are both delicious - have been farmed together in fish farms [http://www.aquaticcommunity.com/tilapia/prawns.php].) Another avenue of research would be to use lights or herbs to attract insects to the tank where the fish can eat them; another step towards making a more diverse, more closed-loop system.

===Concept for compost-heated, compost-powered aquaponic system===
Say you want to set up an aquaponics system. You decide to grow tilapia, because they have many advantages for aquaponics. But tilapia like a water temperature of 28-30°C (82-86°F) and you live in a climate where it gets cold in winter. Using good [[Greenhouses|greenhouse design]], you are able to stabilize the temperature year-round, but there's no way you'll get it up to 28-30° without a heat source. This will require an input of power, in addition to the power needed for the pump.

There could be a way to kill two birds with one stone: build a [[thermophilic compost]] heap against one side of the fish tank. The heat from the compost will warm the water up. Care must be taken to keep the temperature of the greenhouse stable, as the pile can get up to 50°C (122°F). Secondly, for the pump you keep a [[Stirling Engine with Hydraulic Transmission|stirling engine]] at the compost heap. This is driven by the heat of the composting and is hydraulically connected to the water pump. Just an idea...

=Resources=

==2015==
*FAO Aquaponics design manual - [http://www.fao.org/3/contents/1dea3c92-1faa-47bb-a374-0cf4d9874544/i4021e00.htm]
*Open Source Aquaponics Lab, Paulo Marini - this gets OSE's #1 vote - [https://www.facebook.com/aquaponicslab FB], [https://aquaponicslab.org/ site]
==2014 and Earlier==
* [http://www.fastonline.org/?page_id=32 Aquaponics info at F.A.S.T.]
* [http://www.backyardaquaponics.com Backyard Aquaponics] - Includes a thriving [http://www.backyardaquaponics.com/forum/ forum]
* [http://www.growingpower.org/ Growing Power] - a non-profit dedicated to educating people about growing food
* [http://www.friendlyaquaponics.com/ Friendly Aquaponics] - contains plans for systems
* [http://www.aquaponicsjournal.com/articles.php Aquaponics Journal articles]
* [http://en.wikipedia.org/wiki/Aquaponics#Further_reading Wikipedia aquaponics article] - Further Reading section
* [https://www.aquaponics.com/aquaponics/aquaponicsoverview.php ''Aquaponics Information'' at aquaponics.com]
* [[appropedia:Aquaponics|Aquaponics on Appropedia]]
* [http://www.windward.org/ Windward] - a self-sufficient community that uses aquaponics. They have an informative website.
* [http://socalfishfarm.com/fish/ SoCal Fish Farm] - a commercial aquaponics operation. Their website has good information on tilapia, shrimp, aquaponics and [[Greenhouses|solar greenhouses]]
* [http://passionforproduce.net/ Passion For Produce] - backyard aquaponics garden in Sarasota, FL
* [http://www.aquaponics-shop.com Aquaponics Shop] - Australia dedicated aquaponics shop with commercial assistance and research
* [http://aquaponics-plans.allecofriendly.info Aquaponics Plans] - An enthusiast's blog about her personal experience with aquaponics and aquaponics plans.

* [http://aquaponicsideasonline.com Aquaponics System] - An aquaponics enthusiast's website providing ideas and advice for setting aquaponics gardens.

Greenhouses

2015-03-24T14:20:28Z

John S: To link searches for "greenhouse" to present activities.

{{OrigLang}}
{{Breadcrumb|Housing and construction}}
{{Category=Controlled-environment growing}}

[http://opensourceecology.org/wiki/Aquaponics_Greenhouse_Working_Team#Team Aquaponics Greenhouse 2015 Video]

[https://docs.google.com/a/opensourceecology.org/presentation/d/1BFIuy4YyY05yFWfn-a7ursn1er2GWzvbHIB2goPpClo/edit?pli=1#slide=id.p Aquaponics Greenhouse Working Group 2015]

[http://opensourceecology.org/wiki/Aquaponics_Greenhouse_Working_Team#Collaborator_Survey NOW Sign up for Aquaponics Greenhouse Working Team 2015]

Greenhouses are rooms that maximize natural light and can be used for controlled-environment growing. They may be stand-alone or part of a house. We aim to open source robust growing systems. This will empower people to grow high-value crops such as herbs - for self-sufficiency and for market.

Greenhouses need to stay warm all year round. This can be accomplished without using any energy at all - no electric heaters or fuel. A well-designed greenhouse can do this by using [http://en.wikipedia.org/wiki/Seasonal_thermal_store seasonal thermal store], heat sinks, insulation and maximising solar heat and light. In keeping with Open Ecology principles, we aim to gather information in the public domain that allows people to build cheap, effective, zero-energy greenhouses.

==Greenhouses as a Part of the Home==

Excerpt from A Pattern Language by Christopher Alexander:

"Imagine a simple greenhouse, attached to a living room, turned to the winter sun, and -filled with shelves for flowers and vege- tables. It has an entrance from the house—so you can go into it and use it in the winter without going outdoors. And it has an entrance from the garden—so you can use it as a workshop while you are out in the garden and not have to walk through the house.

This greenhouse then becomes a wonderful place: a source of life, a place where flowers can be grown as part of the life of the house. The classic conservatory was a natural part of countless houses in the temperate climates.

For someone who has not experienced a greenhouse as an ex- tension of the house, it may be hard to recognize how fundamental it becomes. It is a world unto itself, as definite and wonderful as fire or water, and it provides an experience which can hardly be matched by any other pattern. Hewitt Ryan, the psychiatrist for whom we built the clinic in Modesto with the help of this pattern language, thought greenhouses so essential that he included one as a basic part of the clinic: a place beside the common area, where people could reintegrate themselves by growing seedlings that would be gradually transplanted to form gardens for the clinic."

==Inflatable greenhouses and Pillowdome==
[[File:Pillowdome.JPG|thumb|right|450px|Pillow dome: The Ark houses a growing environment consisting of intensive organic gardens, irrigated by the "exhaust" from large, transparent tanks containing fish. (See [[Aquaponics|aquaponics]].) The aquaponic tanks also serve as an effective heat sink, allowing an indoor climate warm enough to grow bananas in February, in New England, with no fossil fuel heat source.]]

Nick says: Inflatable greenhouses such as [http://www.isawitonthebox.com/tv/this-morning/inflatable-greenhouse-as-seen-on-this-morning this one] would eliminate frame material and make for quick easy setup. The only trick would be creating a good seal around the air columns. Most greenhouse film is a UV resitant type of polyethylene and can be "welded". [http://www.delviesplastics.com/welding.htm Here] is a plastic welding kit for $288. There may be better ways of doing but the concept seems to have potential.

Bob says check out [http://www.thegreencenter.net/pdf/dome1985.pdf pillow domes] - a kind of geodesic dome devised by [http://en.wikipedia.org/wiki/J._Baldwin Jay Baldwin] (a Bucky Fuller student) with Argon-inflated pillows of long lived UV transparent plastic ([http://en.wikipedia.org/wiki/Tefzel Tefzel]). The concept was later applied on a much larger scale in the [http://www.edenproject.com/ Eden Project].

==Passive solar greenhouses==
[[File:Bolivian solar greenhouse.JPG|thumb|right|400px|Bolivian solar greenhouse]]Solar greenhouses incorporate special design features to maximize use of the Sun's heat so they can run without an input of energy. The article <i>[http://staging.maximumyield.com/article_sh_db.php?articleID=289 Those Remarkable Bolivian Solarhouses]</i> from Maximum Yield magazine describes a UN project in Bolivia. Over 300 solarhouses were built. They cost $6/m<sup>2</sup> (56c per square foot) and proved themselves capable of growing warm-climate vegetables throughout winter high in the Andes without heaters. The article gives detailed descriptions of how they are built.

The design needs to do two things in order to achieve a comfortable growing temperature year-round: firstly, to maximise the use of the Sun's heat and light and secondly, to create a 'thermal mass' effect i.e. include elements that do not change temperature easily, to stabilize the indoor temperature.

Solar greenhouse design features can include -
*Low walls, only 100-120cm high (39-47 inches), painted black. Made of adobe and straw. For OSE, [[Superinsulated CEB Construction‎]] would be perfect. Alternatively, the floor could be sunk below ground level to provide better thermal mass, but this would require more labour to build.
*A domed or sloped roof of wooden poles stretched over clear polyethylene sheeting
*"Small windows are constructed in the adobe walls to allow for opening and closing to raise or lower temperature"
*The floor can be painted black or covered with something black to increase the heat it stores.
*If thermal mass needs to be increased more, fill black plastic bags with gravel or sand; these will store heat. In the Bolivian project, two liter bottles were painted black and filled with sand for this purpose. Black stones can also be used.
*Water tanks also act as a heat store. It might be worth considering [[Aquaponics|aquaponics]] in a solar greenhouse, as a large fishtank will regulate the temperature of the room. A large rainwater catchment, painted black, will work too.

==Earth Sheltered and Walipini greenhouses==
[[File:Walipini.jpg|thumb|400px|right|Walipini greenhouse]]A greenhouse can be built by digging a hole in the ground and covering it with glass. This takes advantage of the heat stored in the earth during the cold season (warmth in winter, cooling in summer). It is an adaptation of the idea of [http://earthshelters.com/faq/passive-annual-heat-storage-definition/ passive annual heat storage (PAHS)] to the greenhouse. Therefore very suitable for climates with cold winters. At the depth of several meters, there is very little seasonal variation in temperature. The earth around the greenhouse structure has large thermal mass.

The Benson Agriculture and Food Institute at Brigham Young University examined the concept in detail and has [http://www.bensoninstitute.org/Publication/Manuals/Walipini.pdf put together a manual] with specific designs ([[File:Walipini.pdf|internal copy here]]). These underground greenhouses are called ''"Walipini"'' (pit greenhouse) in South America. The Benson Institute's experiment was built in Bolivia, high up in the Andes where it gets ''really'' cold. Their greenhouse costs $250-$300 in materials and is designed to provide vegetables year-round for seven people. They recommend a minimum of 94 square feet (less than 8.75m<sup>2</sup>) of growing space per person.

[[File:Oehler greenhouse.jpg|thumb|300px|The basic design of the greenhouses in Mike Oehler's book]]Mike Oehler of [http://undergroundhousing.com/ UndergroundHousing.com], described a similar concept in ''The Earth-Sheltered Solar Greenhouse Book'', available [http://www.downarchive.com/ebooks/313290-the-earth-sheltered-solar-greenhouse-book-by-mike.html here]. This is an adaptation from his earlier work on [[Underground Housing|underground housing]] for residential purposes.

==FAO booklet: solar and Chinese greenhouse==
'''[http://www.fao.org/docrep/T4470E/t4470e0b.htm#TopOfPage 8. Solar house]'''<br>
8.1. The combined passive solar energy training building<br>
8.2. The passive and active combined solar working office

'''[http://www.fao.org/docrep/T4470E/t4470e0c.htm#TopOfPage 9. Research on the temperature environment of solar greenhouse]''' <br>
9.1. The temperature simulation and structural optimization of the solar greenhouse<br>
9.2. The underground heat exchange system of protected vegetable cultivation<br>
9.3. The benefit of vegetable production in the underground heat exchange solar greenhouse

'''[http://www.fao.org/docrep/T4470E/t4470e0d.htm#TopOfPage 10. Integrated energy self-served animal and plant complementary ecosystem in China]''' <br>
10.1. Introduction (about CO2 enrichment) <br>
10.2. History and principle of the integrated energy self-served animal and plant complementary producing system<br>
10.3. The investigation of the problems of the integrated energy self-served ecosystem<br>
10.4. The structure improvement of the energy self-served animal and plant complementary ecosystem<br>
10.5. The study and test of the ventilation system in the E-W form of the ecosystem

==Product Ecology==
* [[Biochar]] to improve [[:Category:Soil and compost|soil]]
* [[Aquaponics]] to produce fish, fertilize plants and buffer temperature.
* [[Integrated Food and Waste Management System]]
* [[Organoponic Raised Bed Gardening]]
* [[Vermicompost]] to improve [[:Category:Soil and compost|soil]] and to feed fish if aquaponics is used
* [[Black Soldier Fly]] to produce compost. Larvae can feed fish if aquaponics is used
* [[CEB press|CEBs]] and [[Superinsulated CEB Construction]]
* [[Compressed_Air|compressed air]] for ventilation
* [[Plastic Extrusion & Molding|Plastic extruder]] for pipes and glazing with stuff like polycarbonate
* [[Rabbits]] to produce CO<sub>2</sub> and compost
* [[Mushrooms]]to produce CO<sub>2</sub> (fungi inhale oxygen and exhale CO<sub>2</sub> like animals) and make compost from wood

==See Also==
* [[Geodesic domes]]
* [[Organoponic Raised Bed Gardening]]

* [http://undergroundhousing.com/ UndergroundHousing.com]
* [http://www.treehugger.com/files/2010/08/garden-pool-family-of-four-grows-food-in-swimming-pool-arizona.php swimming pool to greenhouse conversion].
* [http://en.wikipedia.org/wiki/Aeroponics Wikipedia: Aeroponics]
* [http://en.wikipedia.org/wiki/Greenhouse Wikipedia: Greenhouse]

CEB Considerations 2015

2015-03-20T12:01:05Z

John S:

'''CEB Press Research 2015 for CEB Rev 4.3 Build VI '''

'''[[CEB_Press_Molds Interchangable Press Molds]]''' Is a feature of many commercial CEB Presses. Consider how curved sides, angled ends or a groove may be added to the existing design.

- {{CEB Press Molds]],
- {http://forum.opensourceecology.org/discussion/178/alternate-ceb-press-designs-mutual-improvements/p2 mrsquish]
- [http://forum.opensourceecology.org/discussion/309/manual-ceb-press-with-dozens-of-shapes-and-designs/p1 VelaCreations]

'''Shaped Block Examples'''
- [http://www.hydraform.com/interlocking-block-moulds.htm Interlocking Blocks]

'''Increasing production rate;'''
Molds that produce multiple blocks per cycle increases the production rate. What is the additional cost to make the press wide enough to press two blocks per cycle?
[https://www.youtube.com/watch?v=OvVof_joc-o Video example HydraForm V2LE]

'''Eliminate shaker components.'''
- steeper hopper sides
- different hopper to press geometry turn the hopper 90 degrees
- shift hopper to move with lateral cylinder the motion shakes the hopper
- load with auger or conveyor
- prepare a soil mix that performs better in the
- bumpers, detents or mechanical shaker associated with the motion of the slide

'''Symmetry for Alternate Assembly'''

Arrange the CEB Press components to be assembled in a mirrored manner for convenience
of the work site.

'''Insulating CEB (lightweight too)'''
Consider mixing as much as 70% perlite, styrofoam or other closed cell
insulator into the soil mix. This could be tested with one or two blocks
pressed with various insulating materials and soil mixes. Test for
shrinkage, compression capacity and R Value. Perhaps a composite block,
half compressed earth and insulated compressed earth, might make a
better exterior wall because of thermal mass on the inside and insulation
on the outside.

'''Mixed Soil Transport (Auger, Conveyor or {{Aerial Ropeway}})'''
Moving the soil from ground level into a smaller hopper with steeper
sides could be accommodated with a material transport auger. Also, the
tractor has the ability to apply enough down pressure to seriously damage
a CEB Press, this risk may be eliminated by filling the hopper with a soil
mix transport auger. While traveling in the auger the soil may be further
mixed and kept broken into small pieces. This has been discussed in OSE
forums by [http://forum.opensourceecology.org/discussion/139/designing-auger-geometry-for-materials-handling/p1 Wolfrick],

'''Soil Mixer'''
This has been proposed and discussed in the past [[Soil Mixer]] many
commercial CEB Presses are fed from circular tub mixers, others from
hammer mills and ball crushers.

'''Interchangeable Parts''' within a series of OSE OEB from most simple to fully automatic.

There are at least three variations:
1- fully automatic CEB press,
2- compression powered CEB press,
3- full manual CEB press.

Microtrac Tracks

2015-03-17T09:09:30Z

John S: Video Examples of Tracks

[[Image:microtracks.jpg|500px]]

[[File:mictrotracks.skp]]

== Select Video Examples of Tracks==

[https://www.youtube.com/watch?v=3_acIELDxWU Kanga Micro Skid Steer 2:34]

[https://www.youtube.com/watch?v=PlxuP6dN1ug Toro Dingo Micro Skid Steer Loader 1:31]

[https://www.youtube.com/watch?v=EaIbdoEDyCk Power Trac Articulated Micro Loader 2:18]

A History of Crawler Tractors
[https://www.youtube.com/watch?v=U1ZlnE200ms Crawler History 2:38]

[https://www.youtube.com/watch?v=09MVQTU7JQo Small Crawler :28]

[https://www.youtube.com/watch?v=Ap9OM-qVoqg Homemade Crawler 3:05]

Many people have cut tracks from tractor tires. This fellow added the treads from two tractor tires and two additional wheels to a zero turn lawn mower creating a tracked play toy. He also proves that leaving adequate sidewalls and providing the right tension of the tractor tread tracks is adequate to keep them in place. This is mover conversion not a skid steer conversion.
[https://www.youtube.com/watch?v=eKx9M6qUIBY Zero Turn Mower 1:38]

How to cut off tire side walls:
[https://www.youtube.com/watch?v=gE0GkBGyuZM Home Made Tire Cutter 3:27]

[https://www.youtube.com/watch?v=Fv6guxo3Twg Commercial Sidewall Cutter :50]

[https://www.youtube.com/watch?v=vprDjAhl9Oc Manual Sidewall Removal 3:31]

How the tracks are made, mounted and driven vary. Some are made from car tire tread. These examples are well made and well finished.

[https://www.youtube.com/watch?v=M603ytZ2PUM Homemade Steel Tracks 5:41]

[https://www.youtube.com/watch?v=_q5nLw03mNM Carefully made tracks in use 1:41]

[https://www.youtube.com/watch?v=u0BS6IzuRhQ Carefully made tracks in snow 2:40]

[https://www.youtube.com/watch?v=YJXprgSDJ6Y Carefully made tracks blueprints 1:00]

[https://www.youtube.com/watch?v=HYLazxjcFLk Making Carefully made tracks 3:04]

Microtrac Tracks

2015-03-15T04:51:01Z

John S:

[[Image:microtracks.jpg|500px]]

[[File:mictrotracks.skp]]

[https://www.youtube.com/watch?v=3_acIELDxWU Kanga Micro Skid Steer 2:34]

[https://www.youtube.com/watch?v=PlxuP6dN1ug Toro Dingo Micro Skid Steer Loader 1:31]

[https://www.youtube.com/watch?v=EaIbdoEDyCk Power Trac Articulated Micro Loader 2:18]

A History of Crawler Tractors
[https://www.youtube.com/watch?v=U1ZlnE200ms Crawler History 2:38]

[https://www.youtube.com/watch?v=09MVQTU7JQo Small Crawler :28]

[https://www.youtube.com/watch?v=Ap9OM-qVoqg Homemade Crawler 3:05]

Many people have cut tracks from tractor tires. This fellow added the treads from two tractor tires and two additional wheels to a zero turn lawn mower creating a tracked play toy. He also proves that leaving adequate sidewalls and providing the right tension of the tractor tread tracks is adequate to keep them in place. This is mover conversion not a skid steer conversion.
[https://www.youtube.com/watch?v=eKx9M6qUIBY Zero Turn Mower 1:38]

How to cut off tire side walls:
[https://www.youtube.com/watch?v=gE0GkBGyuZM Home Made Tire Cutter 3:27]

[https://www.youtube.com/watch?v=Fv6guxo3Twg Commercial Sidewall Cutter :50]

[https://www.youtube.com/watch?v=vprDjAhl9Oc Manual Sidewall Removal 3:31]

How the tracks are made, mounted and driven vary. Some are made from car tire tread. These examples are well made and well finished.

[https://www.youtube.com/watch?v=M603ytZ2PUM Homemade Steel Tracks 5:41]

[https://www.youtube.com/watch?v=_q5nLw03mNM Carefully made tracks in use 1:41]

[https://www.youtube.com/watch?v=u0BS6IzuRhQ Carefully made tracks in snow 2:40]

[https://www.youtube.com/watch?v=YJXprgSDJ6Y Carefully made tracks blueprints 1:00]

[https://www.youtube.com/watch?v=HYLazxjcFLk Making Carefully made tracks 3:04]

Microtrac Tracks

2015-03-15T04:41:54Z

John S: Examples of Small Tracked Equipment, Builds and Features

[[Image:microtracks.jpg|500px]]

[[File:mictrotracks.skp]]

[https://www.youtube.com/watch?v=3_acIELDxWU Kanga Micro Skid Steer 2:34]

[https://www.youtube.com/watch?v=PlxuP6dN1ug Toro Dingo Micro Skid Steer Loader 1:31]

A History of Crawler Tractors
[https://www.youtube.com/watch?v=U1ZlnE200ms Crawler History 2:38]

[https://www.youtube.com/watch?v=09MVQTU7JQo Small Crawler :28]

[https://www.youtube.com/watch?v=Ap9OM-qVoqg Homemade Crawler 3:05]

Many people have cut tracks from tractor tires. This fellow added the treads from two tractor tires and two additional wheels to a zero turn lawn mower creating a tracked play toy. He also proves that leaving adequate sidewalls and providing the right tension of the tractor tread tracks is adequate to keep them in place. This is mover conversion not a skid steer conversion.
[https://www.youtube.com/watch?v=eKx9M6qUIBY Zero Turn Mower 1:38]

How to cut off tire side walls:
[https://www.youtube.com/watch?v=gE0GkBGyuZM Home Made Tire Cutter 3:27]

[https://www.youtube.com/watch?v=Fv6guxo3Twg Commercial Sidewall Cutter :50]

[https://www.youtube.com/watch?v=vprDjAhl9Oc Manual Sidewall Removal 3:31]

How the tracks are made, mounted and driven vary. Some are made from car tire tread. These examples are well made and well finished.

[https://www.youtube.com/watch?v=M603ytZ2PUM Homemade Steel Tracks 5:41]

[https://www.youtube.com/watch?v=_q5nLw03mNM Carefully made tracks in use 1:41]

[https://www.youtube.com/watch?v=u0BS6IzuRhQ Carefully made tracks in snow 2:40]

[https://www.youtube.com/watch?v=YJXprgSDJ6Y Carefully made tracks blueprints 1:00]

[https://www.youtube.com/watch?v=HYLazxjcFLk Making Carefully made tracks 3:04]

Microtractor/Research Development

2015-03-15T04:40:46Z

John S: Link to Track Examples

{{Breadcrumb|Food and Agriculture|Farm equipment|MicroTrac}}
{{GVCS Header}}

=Status=

*See [[Status Briefs]]
*Andrew Spina is proposing an OSE Spec version for modularity, a sound approach - [http://aispina.blogspot.com/2012/03/thinking-about-microtrac.html?showComment=1331190238318#c2229054314894785674]

=Prototype 1=
[[Image:MicroTrac1.jpg|thumb]]

[[Image:Microtrac4.jpg|thumb]]
[[Image:MicroTrac2.jpg|thumb]]
[[Image:MicroTrac3.jpg|thumb]]

==Design==
http://blog.opensourceecology.org/2009/07/zero-turn-microtrac/

<html><iframe src="http://blip.tv/play/AYGTwU0C.html?p=1" width="550" height="443" frameborder="0" allowfullscreen></iframe><embed type="application/x-shockwave-flash" src="http://a.blip.tv/api.swf#AYGTwU0C" style="display:none"></embed></html>
==CAD==
Blender File - [[File:Microtrac_Design1.blend]]

=Prototype II Proposals=

*[[MicroTrac Tracks]]
*[[MicroTrac Concept]]
*[[MicroTrac Baseline Calculation]]

==Prototype II - Will Cleaver==

MicroTrac Prototype uses a [[Power Cube]] just like MicroTrac Prototype I, but it uses more of the [[LifeTrac]] design pattern language: a cubic, bolt-together, 4x4x1/4" tubing construction, with wheel shaft mounting plates.

See the video:

<html>
<object width="480" height="385"><param name="movie" value="http://www.youtube.com/v/8sjvt4KnDF0?fs=1&hl=en_US"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/8sjvt4KnDF0?fs=1&hl=en_US" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="480" height="385"></embed></object>
</html>

[[Image:microtracII.jpg]]
[[File:microtracIIv01.blend]]

Design Repository: http://openpario.mime.oregonstate.edu/documents/722

===Comments and Questions on v0.1===

*How do we interpret dimensions on v0.1 in the Blender file? Please comment. What are the basic size dimensions for the wheel base?
*Reduce loader arm length and make it more vertical in v0.11. It's sticking too far out.
*I think the bearings have to be on opposite sides, as 4" separation is too small, leading to large stress on motor shaft
*Please render MicroTrac and LifeTrac next to each other for size comparison:
*What is the max height reach of bommon of loader quick-attach plate?

For practical reasons, it would be useful to design MicroTrac with sufficient reach to load the CEB press. The present design is more like MiniTrac, not MicroTrac.

Can you also design a MicroTrac: but a platform under the power Cube, put on 4 wheels with tracks, but 2 drive motors, and a loader attached to the Power Cube? It would have low reach, only like 2-3 feet - but would be a true MicroTrac.

==Prototype Proposal - Andrew Spina==
*http://aispina.blogspot.com/2012/03/thinking-about-microtrac.html?showComment=1331190238318#c2229054314894785674

==Prototype Proposal - Graham Robertson ==

[[http://www.mediafire.com/?k65h12725f8om5o,3szgsya4hrs0iyv Download second drawing, and picture of first iteration]] (still in the works, improved upon first design). This is a crude, unfinished representation, long way to go before its a true fab drawing.

'''I would like to hear ideas, suggestions or help drawing up:'''

a control panel behind the power cube, that can be easily removed to allow for removal of the power cube.

I like the idea of tank treads, as we could really downsize the width of the frame. Not sure about the technical part of designing this.

'''Changes from first proposal:'''

Shortened quick connect wheel module to one "cell." Need help figuring out how the shaft and bearings will fit into this. Tractor width (outer rim to rim) decreased from 62" to 46"

Tweaked frame proportions and design

Straight loader arms (Thanks [[User:Dorkmo|Dorkmo]] for uploading the bent arms, QA plate, and quick connect wheels on 3d warehouse)

'''Next iteration:'''

Tank treads?

Add hinged or removable control panel behind power cube plus hydraulic mounts.
Short shafts and bearings for QC wheels

=Industry Standards=
* [http://www.youtube.com/watch?v=1qwaJ1lhhYI&feature=related BCS Walk Behind]
* [http://www.toro.com/en-us/professional-contractor/compact-utility/dingo/pages/default.aspx Toro Dingo]

*Industry Standards Analysis Spreadsheet
https://docs.google.com/spreadsheet/ccc?key=0Av4ZjQn4DHJHdFZzQTFCb2RCYUhYWDlnb1NEUjBOcUE#gid=29

=See Also=
*[[Microtractor Part Sourcing]]
* [http://www.google.com/patents?id=xRw0AAAAEBAJ&printsec=abstract&zoom=4&source=gbs_overview_r&cad=0#v=onepage&q&f=false patent for a mono-wheel tractor]

{{GVCS Footer}}

File:Microtracks.jpg

2015-03-15T04:32:01Z

John S: Examples of Tracked Equipment

[https://www.youtube.com/watch?v=3_acIELDxWU Kanga Micro Skid Steer 2:34]

[https://www.youtube.com/watch?v=PlxuP6dN1ug Toro Dingo Micro Skid Steer Loader 1:31]

A History of Crawler Tractors
[https://www.youtube.com/watch?v=U1ZlnE200ms Crawler History 2:38]

[https://www.youtube.com/watch?v=09MVQTU7JQo Small Crawler :28]

[https://www.youtube.com/watch?v=Ap9OM-qVoqg Homemade Crawler 3:05]

Many people have cut tracks from tractor tires. This fellow added the treads from two tractor tires and two additional wheels to a zero turn lawn mower creating a tracked play toy. He also proves that leaving adequate sidewalls and providing the right tension of the tractor tread tracks is adequate to keep them in place. This is mover conversion not a skid steer conversion.
[https://www.youtube.com/watch?v=eKx9M6qUIBY Zero Turn Mower 1:38]

How to cut off tire side walls:
[https://www.youtube.com/watch?v=gE0GkBGyuZM Home Made Tire Cutter 3:27]

[https://www.youtube.com/watch?v=Fv6guxo3Twg Commercial Sidewall Cutter :50]

[https://www.youtube.com/watch?v=vprDjAhl9Oc Manual Sidewall Removal 3:31]

How the tracks are made, mounted and driven vary. Some are made from car tire tread. These examples are well made and well finished.

[https://www.youtube.com/watch?v=M603ytZ2PUM Homemade Steel Tracks 5:41]

[https://www.youtube.com/watch?v=_q5nLw03mNM Carefully made tracks in use 1:41]

[https://www.youtube.com/watch?v=u0BS6IzuRhQ Carefully made tracks in snow 2:40]

[https://www.youtube.com/watch?v=YJXprgSDJ6Y Carefully made tracks blueprints 1:00]

[https://www.youtube.com/watch?v=HYLazxjcFLk Making Carefully made tracks 3:04]

CEB Press

2015-03-12T03:30:25Z

John S: Public Link to CEB 2015 Build Development Page

[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Development_Board Link to CEB Press Build June 2015]

{{OrigLang}}

<html><iframe src="https://player.vimeo.com/video/49864277" width="500" height="281" frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe> <p><a href="http://vimeo.com/49864277">The CEB Story 2012.</a> from <a href="http://vimeo.com/opensourceecology">Open Source Ecology</a> on <a href="http://vimeo.com">Vimeo</a>.</p></html>

{{GVCS Header}}

=Overview=

[[File:Machine.jpg|right|400px|thumb|CEB Press (aka "The Liberator")]]
[[File:Liberator_bricks.JPG|right|400px|thumb|Bricks pressed on [[The Liberator]]]]

The Liberator is OSE's automatic, high throughput Compressed Earth Brick Press. It is named The Liberator because it is intended to free people from the single highest cost of living - housing. See [[Cost of Living]] and [[GVCS Naming Convention]].

The CEB is at product release status and is being actively manufactured at Factor e Farm. The presses was used heavily as a part of the [[Factor e Farm Infrastructure Buildout 2011]]. See latest press release on the MicroHouse 4 built in 2014 - [http://www.prweb.com/releases/2015/01/prweb12440135.htm]

The bill of materials cost of the machine is $3000-5500, depending on the version and build process. The machine versions include:
*manual hydraulic controls
*digitally cut parts or stock steel sections
*small or large hopper
*with or without hopper shaker
*automatic controller at 5 bricks per minute
*automatic controller at 10 bricks per minute

We are currently selling the full machine for $11k (specifications below). Our next production run will be in June 2015 [[CEB 100]], and we are currently accepting orders. Terms are 1/2 down payment to secure the order and the other half, including shipping cost, paid after machine completion and prior to the shipment. Proceeds are put back 100% into the operation to fund further research and development. - updated Jan. 23, 2014

==Specifications==
*Version 6 is our current model; exhaustive documentation release comming 4/30/15
*Open source hardware, controller, and software (CC-BY-SA, GPL)
*Controller includes automatic pressing and manual mode
*Does NOT come with a power source - it is powered by a hydraulic power source, such as by our [[Power Cube]] or a tractor hydraulic take-off.
*Full size bricks are 4"x6"x12", plain flat-faced bricks
*Brick height is adjustable from 1"-4"
*Brick dimensional variations: +/- 1/16". Soil uniformity will determine height uniformity of brick.
*6 full-sized bricks per minute at 14 gallon per minute hydraulic flow. Brick pressing rate will increase with a higher hydraulic flow, up to the maximum rated flow of the hydraulic solenoid. At a flow >14 gpm, the secondary cylinder and shaker motor are throttled down to reduce their speed. Hydraulic solenoid valve is rated for a maximum of 30 gpm fluid flow at 3000PSI
*Fuel consumption with [[Power Cube]] running at 14 gpm fluid flow - about 1 gallon per hour
*System hydraulic pressure - 2300 psi
*Comes with hydraulic quick couplers ready to be connected to a power source
*Weight - 1700 lb
*Moving: brick press is moved with forks. Footprint (with legs in the inner position) allows machine to be placed in the bed of a 3/4 ton pickup. It has adjustable legs for uneven terrain. Machine can be moved around on a trailer (not included)
*Material cost: $4500-$6500 depending on sourcing; manual machine (without hydraulic solenoid, machine costs $1000 less in materials
*3'x6' grate for tractor loading. Includes soil deflectors
*Includes hopper shaker to help soil move down the hopper
*Known bugs: machine has currently been tested in multiple day production runs and is stable at 6 bricks per minute. When solenoid valve ran with 2 Power Cubes at 28 gpm fluid flow, the valve would lock up from time to time. May be software, solenoid design, or Power Cube stacking issues, and requires detailed analysis. This bug was not seen when a larger diesel engine was used to power the brick press in 2010 at 30 gpm fluid flow.

=Versions=

See [[CEB Press Genealogy]]

*[[CEB Press 6]]
*[[CEB Press 5]]
*[[CEB Press 4]]
*[[CEB Press 3]]
*[[CEB Press 2]]
*Prototype 1 Completed [http://opensourceecology.org/ceb-phase-1-done/ blog post]

=Details=
The CEB Press takes earth/dirt/soil and compresses it tightly to make solid blocks useful for building. Compressed earth blocks have many advantages as a building material: by making the building materials from the readily available dirt on the building site, they eliminate the need to transport bricks from elsewhere, reducing financial cost and environmental impact. Compressed earth blocks are very strong and insulate well against both heat and sound, making for very energy-efficient building (especially combined with the energy savings from not needing to transport them from offsite). Best of all, the material they use is already on-site and does not need to be purchased -- quite literally, dirt-cheap! See the wiki page on [[Compressed Earth Blocks]] and the [[:Category:CEB|CEB category]] for more details on building using CEBs.

The Liberator has been fully designed and tested by the [[Open Source Ecology]] team. Because the Liberator is an open source technology, you can freely download instructions to build your own from materials you can obtain yourself, or contact ''opensourceecology[at]gmail[dot]com'' to buy a kit or a finished machine.

Building a machine yourself might seem intimidating, but every step of the process is fully documented and the OSE community is available on our [http://forum.opensourceecology.org/ discussion forums] if you need help, advice, or a little hand-holding.

Using the CEB Press, two people can build a 6 foot high (1.83m) round wall, 20 feet (6.1m) in diameter, 1 foot (30cm) thick, in one 8 hour day, though construction time will vary somewhat depending on preparation time, what equipment is available (tractor to prepare the ground and move the blocks where they need to go), the quality of the soil, and other factors. The bigger the block size, the faster a wall can be erected, but at the cost of heavier blocks that are more of a strain to work with. Blocks from ''The Liberator'' average 25 pounds (11.3kg).

See [[CEB Design]] for more information.

=Product Ecology=

[[Image:4b-Constructioneco.png|thumb|600px|center|Construction [[Product Ecology]]]]

'''From'''
*{{Furnace}}
*{{Welder}}
*{{Torch Table}}
*{{Ironworker}}

'''Uses'''
*{{PowerCube}}
*{{Rototiller}}
*{{Tractor}}
*[[Earth]]

'''Creates'''
*[[CEB Bricks]]

'''Enables'''
*[[Workshop]]
*[[Greenhouse]]
*[[HabLab]]

=See Also=
*[http://collections.infocollections.org/ukedu/uk/d/Jh2380e/4.3.1.html Soil Testing]
*[http://collections.infocollections.org/ukedu/uk/d/Jh2380e/4.3.2.html more Soil Testing]
*[[CEB Design]]
*[[Compressed Earth Blocks]]
*[[Cinva Ram]]
*[[CEB_FAQ]]
*[[CEB Press/Rollers]]
*[[CEB Press/ModularRollers]]
*[[Hablab]]
*[[Metric CEB Press]]
*[[CEB Press/Field Testing 2011|Field Testing 2011]]
*[[CEB Press/Videos]]

{{GVCS Footer}}
[[Category:CEB Press]] [[Category:GVCS]]

CEB Press

2015-03-12T03:27:41Z

John S: link to 2015 CEB Development Page

{{OrigLang}}

<html><iframe src="https://player.vimeo.com/video/49864277" width="500" height="281" frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe> <p><a href="http://vimeo.com/49864277">The CEB Story 2012.</a> from <a href="http://vimeo.com/opensourceecology">Open Source Ecology</a> on <a href="http://vimeo.com">Vimeo</a>.</p></html>

{{GVCS Header}}

=Overview=

[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Development_Board CEB Press Build June 2015]

[[File:Machine.jpg|right|400px|thumb|CEB Press (aka "The Liberator")]]
[[File:Liberator_bricks.JPG|right|400px|thumb|Bricks pressed on [[The Liberator]]]]

The Liberator is OSE's automatic, high throughput Compressed Earth Brick Press. It is named The Liberator because it is intended to free people from the single highest cost of living - housing. See [[Cost of Living]] and [[GVCS Naming Convention]].

The CEB is at product release status and is being actively manufactured at Factor e Farm. The presses was used heavily as a part of the [[Factor e Farm Infrastructure Buildout 2011]]. See latest press release on the MicroHouse 4 built in 2014 - [http://www.prweb.com/releases/2015/01/prweb12440135.htm]

The bill of materials cost of the machine is $3000-5500, depending on the version and build process. The machine versions include:
*manual hydraulic controls
*digitally cut parts or stock steel sections
*small or large hopper
*with or without hopper shaker
*automatic controller at 5 bricks per minute
*automatic controller at 10 bricks per minute

We are currently selling the full machine for $11k (specifications below). Our next production run will be in June 2015 [[CEB 100]], and we are currently accepting orders. Terms are 1/2 down payment to secure the order and the other half, including shipping cost, paid after machine completion and prior to the shipment. Proceeds are put back 100% into the operation to fund further research and development. - updated Jan. 23, 2014

==Specifications==
*Version 6 is our current model; exhaustive documentation release comming 4/30/15
*Open source hardware, controller, and software (CC-BY-SA, GPL)
*Controller includes automatic pressing and manual mode
*Does NOT come with a power source - it is powered by a hydraulic power source, such as by our [[Power Cube]] or a tractor hydraulic take-off.
*Full size bricks are 4"x6"x12", plain flat-faced bricks
*Brick height is adjustable from 1"-4"
*Brick dimensional variations: +/- 1/16". Soil uniformity will determine height uniformity of brick.
*6 full-sized bricks per minute at 14 gallon per minute hydraulic flow. Brick pressing rate will increase with a higher hydraulic flow, up to the maximum rated flow of the hydraulic solenoid. At a flow >14 gpm, the secondary cylinder and shaker motor are throttled down to reduce their speed. Hydraulic solenoid valve is rated for a maximum of 30 gpm fluid flow at 3000PSI
*Fuel consumption with [[Power Cube]] running at 14 gpm fluid flow - about 1 gallon per hour
*System hydraulic pressure - 2300 psi
*Comes with hydraulic quick couplers ready to be connected to a power source
*Weight - 1700 lb
*Moving: brick press is moved with forks. Footprint (with legs in the inner position) allows machine to be placed in the bed of a 3/4 ton pickup. It has adjustable legs for uneven terrain. Machine can be moved around on a trailer (not included)
*Material cost: $4500-$6500 depending on sourcing; manual machine (without hydraulic solenoid, machine costs $1000 less in materials
*3'x6' grate for tractor loading. Includes soil deflectors
*Includes hopper shaker to help soil move down the hopper
*Known bugs: machine has currently been tested in multiple day production runs and is stable at 6 bricks per minute. When solenoid valve ran with 2 Power Cubes at 28 gpm fluid flow, the valve would lock up from time to time. May be software, solenoid design, or Power Cube stacking issues, and requires detailed analysis. This bug was not seen when a larger diesel engine was used to power the brick press in 2010 at 30 gpm fluid flow.

=Versions=

See [[CEB Press Genealogy]]

*[[CEB Press 6]]
*[[CEB Press 5]]
*[[CEB Press 4]]
*[[CEB Press 3]]
*[[CEB Press 2]]
*Prototype 1 Completed [http://opensourceecology.org/ceb-phase-1-done/ blog post]

=Details=
The CEB Press takes earth/dirt/soil and compresses it tightly to make solid blocks useful for building. Compressed earth blocks have many advantages as a building material: by making the building materials from the readily available dirt on the building site, they eliminate the need to transport bricks from elsewhere, reducing financial cost and environmental impact. Compressed earth blocks are very strong and insulate well against both heat and sound, making for very energy-efficient building (especially combined with the energy savings from not needing to transport them from offsite). Best of all, the material they use is already on-site and does not need to be purchased -- quite literally, dirt-cheap! See the wiki page on [[Compressed Earth Blocks]] and the [[:Category:CEB|CEB category]] for more details on building using CEBs.

The Liberator has been fully designed and tested by the [[Open Source Ecology]] team. Because the Liberator is an open source technology, you can freely download instructions to build your own from materials you can obtain yourself, or contact ''opensourceecology[at]gmail[dot]com'' to buy a kit or a finished machine.

Building a machine yourself might seem intimidating, but every step of the process is fully documented and the OSE community is available on our [http://forum.opensourceecology.org/ discussion forums] if you need help, advice, or a little hand-holding.

Using the CEB Press, two people can build a 6 foot high (1.83m) round wall, 20 feet (6.1m) in diameter, 1 foot (30cm) thick, in one 8 hour day, though construction time will vary somewhat depending on preparation time, what equipment is available (tractor to prepare the ground and move the blocks where they need to go), the quality of the soil, and other factors. The bigger the block size, the faster a wall can be erected, but at the cost of heavier blocks that are more of a strain to work with. Blocks from ''The Liberator'' average 25 pounds (11.3kg).

See [[CEB Design]] for more information.

=Product Ecology=

[[Image:4b-Constructioneco.png|thumb|600px|center|Construction [[Product Ecology]]]]

'''From'''
*{{Furnace}}
*{{Welder}}
*{{Torch Table}}
*{{Ironworker}}

'''Uses'''
*{{PowerCube}}
*{{Rototiller}}
*{{Tractor}}
*[[Earth]]

'''Creates'''
*[[CEB Bricks]]

'''Enables'''
*[[Workshop]]
*[[Greenhouse]]
*[[HabLab]]

=See Also=
*[http://collections.infocollections.org/ukedu/uk/d/Jh2380e/4.3.1.html Soil Testing]
*[http://collections.infocollections.org/ukedu/uk/d/Jh2380e/4.3.2.html more Soil Testing]
*[[CEB Design]]
*[[Compressed Earth Blocks]]
*[[Cinva Ram]]
*[[CEB_FAQ]]
*[[CEB Press/Rollers]]
*[[CEB Press/ModularRollers]]
*[[Hablab]]
*[[Metric CEB Press]]
*[[CEB Press/Field Testing 2011|Field Testing 2011]]
*[[CEB Press/Videos]]

{{GVCS Footer}}
[[Category:CEB Press]] [[Category:GVCS]]

CEB Press 6 - Overall Machine - Development Board

2015-03-12T03:18:30Z

John S: links with data added as separate table

== CEB Links that Contain Data follow:==

[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Dashboard Dashboard]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Test_Documentation Documentation]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Requirements Requirements]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Modules Modules]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Interface_Design Interface Design]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Calculations Calculations]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_3D_CAD 3D CAD]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Renders Renders]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_CAM_Files CAM Files]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Hydraulics_Optimization Hydraulics Optimization]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Hydraulic_Diagrams Hydraulic Diagrams]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Bill_of_Materials Bill of Materials]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Exploded_Parts_Diagram Exploded Parts Diagram]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Language_Agnostic_Instructionals Language Agnostic Instructionals]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Design_Problem_Statement Design Problem Statement]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_3D_CAD_Review 3D CAD Review]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Bolting_Pattern Bolting Pattern]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Bolting_Pattern Logic Diagrams]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Electronics_Layout Electronics Layout]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Firmware Firmware]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Machine_Infographic Machine Infographic]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Build_Time_Data Build Time Data]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Safety_Review Safety Review]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Test_Procedures_and_Data_Collection Test Procedures and Data Collection]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Review_Suggestions Review Suggestions]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Beddingfield_Edition_-_Product_Description Product Description]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Viral_Replicability_Criteria Viral Replicability Criteria]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Open_Sourcing Open Sourcing]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Publicity Publicity]
[http://opensourceecology.org/wiki/CEB_Press_6_-_Overall_Machine_-_Event_Organization Event Organization]

There are many links in the table below that are void of data. The list above was created so you don't have to click on empty links, as I did, to find they contain no data. It is impolite, inconvenient, selfish as it wastes others time to create links that are empty no matter how convenient is seems to a link creator. Either add links to the above list when data is added or remove from the table links that are void. I created the above list because I could not remove the [] brackets from around the links in the database making them clearly inactive links as I would have done had I had access to the database. This was done to save others the half hour or so checking links that were empty. - JohnS

'''(linked from http://opensourceecology.dozuki.com/c/CEB_Press_-_Modules)'''

<html><iframe width=100% height='500' frameborder='0' src='https://docs.google.com/spreadsheet/pub?key=0ArpE5Y9PpJCXdDJ6QmhpbUo4a0tHTEVPc2JIak8zUGc&output=html&widget=true'></iframe></html>

[https://docs.google.com/a/opensourceecology.org/spreadsheet/ccc?key=0ArpE5Y9PpJCXdDJ6QmhpbUo4a0tHTEVPc2JIak8zUGc#gid=1 edit]

JohnS

2015-03-11T19:37:18Z

John S: Created page with "Retired Tinker - [http://bsa.net Endowed Rightsist] retired = live like one has more time than money. tinker = simplifier of complex things until they work more better. mon..."

Retired Tinker - [http://bsa.net Endowed Rightsist]
retired = live like one has more time than money.
tinker = simplifier of complex things until they work more better.
money = currency is a tool of exchange that from 1787 to 1913 was remarkably stable.
inflation = a way that assets can be stolen.

Moved from Carolina farm where I built solar energy efficient house and shop, ponds, orchard and air strip.
Moved to shop with guest rooms in high Virginia Mountains, limestone Karst.
Am reinventing Ag building into shop with quest quarters, raising chickens and gardens.
Neighbors are mostly cattle ranchers and retirees.
Weather here is similar to NW Pennsylvania SW New York Mountains. Planting starts in May.

[http://webstersdictionary1828.com/Home?word=allodium 2 Tim 2:15],
[http://ediblelandscaping.com Edible Landscaping],
[https://www.facebook.com/oathkeepersofva Virginia OathKeepers],
[http://teamlaw.net Team Law],
[http://epapershield.com ePaperShield]
[http://normeconomics.com Norm Economics]

Specific OSE project interest:
greenhouse
rock and soil screening and handling
micro-tractor and attachments
tractor attachments
NiFe Batteries
process controls

Personal OSE related projects:

Spring 2015:
facility for starting garden plants (greenhouse like)*
hand tractor* and accessories (24VDC wheel chair gear motors)
utility cart (mule)
cultivators
seed planter
fence unroller - stretcher
gravel / soil screen and handling*

Summer 2015:
install 9'x9' overhead door
install loading dock door 4.5'x7'
rocket burner coal / pellet stoker fed space and water heater*
3pt drill rig for well*, posts, sampling, rock breaking, etc
rock breaking tools

Fall 2015:
greenhouse*
install stoker fed heat

Long term:
convert CASE Landscape Loader bucket to quick attach*
rock picker / root crop harvester / sod cutter
rock crusher
producer gas-ifier*
various road construction / maintenance attachments
extremely long life batteries (NiFe)*

* interests that match specific OSE GVCS projects

CEB Press/Research Development

2015-03-08T19:57:18Z

John S: Longer and Slower Animation

{{GVCS Header}}

=Overview=

High Level Overview:
: [[CEB Design]]

CEB Considerations 2015
: [[CEB Considerations 2015]]

Design of subsystems:

: [[CEB_Press/Research_Development/Hydraulic_Design |Hydraulic Design]]
: [[CEB_Press/Research_Development/Controller_Design |Controller Design]]

=Mechanical Drawings=
*3D
**[[File:CEBIV-new.zip]] Solidworks
**[[File:CEBIV.step]] STEP AP203
**[[File:CEBIV2.step]] STEP AP214
**[[File:CEBIV.stl]]
**[[File:CEBIV.x_t]]
**[[File:CEBIV.x_b]]
**[[File:CEBIV.3dxml]]
**[[File:CEBPress.FCStd]] freecad

*2D (pdf, png, and sldraw)
**[[File:CEBIVFABFILE.zip]]
**[[File:CEBIVDiagram.png.zip]]
**[[File:CEBIVIndex.ods]]
**[[File:CEBIVFab.pdf]]

<html><iframe src="https://docs.google.com/file/d/0BxdwbCg3FiGjNzZOaDVFRVg5TVU/preview" width="800" height="480"></iframe></html>

----

[[Grate]] (including deflectors, hinges, and supports)

[[CEB Hopper]] (including saddle)

[[CEB Shaker]] (including shields)

[[CEB Legs]] (including holders and feet)

[[CEB Outer Frame]] (including drawer rollers and shields)

[[CEB Inner Frame]]

[[CEB Soil Drawer]]

=Research=

The first prototype was built in January 2008. The build is archived [[CEB Prototype 1 Fab|here]]

People got interested in our open development model...
*[http://blog.p2pfoundation.net/marcin-jakubowskis-open-farm-the-most-important-social-experiment-in-the-world/2008/01/22 Review of the social enterprise experiment by P2P Foundation]
*[http://groups.google.com/group/CooperationCommons/msg/8a8fb3953cce3588 Review by Samuel Rose of Social Synergy]
*[http://blog.p2pfoundation.net/steve-bosserman-on-economic-sustainability-in-a-world-of-open-design/2008/02/19 P2P Foundation review of the economic model]

On the 13th of June 2010, we announced the full release of the complete version. This was an improvement over previous designs, with automatic controls and a faster pressing rate. Several people have bought them since then.

==Design Description==
<div>
<html>
<iframe width="400" height="233" src="https://www.youtube.com/embed/zVl60TO1jjU" frameborder="0" allowfullscreen></iframe>
</html>

==Advantages of The Liberator==

[[File:Liberator_V_commercial.JPG|center|700px]]
*'''Easy repair'''. The Liberator was designed to make maintenance as easy and infrequent as possible. The part that is most likely to need replacement is a rubber sheet from McMaster-Carr. The press is designed for disassembly, so if repairs are needed, the cost should be minimal. And unlike commercial machines, you have all the blueprints and sources for parts here, so there should be no difficulty repairing it.
*Requires as little as 1 person to operate. The only control required is turning the machine on, and from that point one simply loads soil and unloads bricks. There is an alternative manual version for $500 less '''(Is that correct?)'''
*'''Modular power source'''. The Liberator does not have its own power source; it is designed to be attached to an external power source. This is in line with the [[Key Features of the GVCS|OSE principle]] of modularity; different tools can be run from the same power source, allowing the same tool to fulfill many functions flexibly. The power source could be the hydraulics from [[LifeTrac]] (our tractor any flexible source of machanical power), [[Power Cube]], or any hydraulic power source with a capacity of 6 gallon per minute (22.71 liters per minute).
*'''Large hopper'''. Compared to other CEB presses on the market, The Liberator has a very large hopper. We found with earlier editions that a small hopper requires constant loading and this slows down the production process.

=Links to Other CEB Presses=
* [http://youtu.be/3AaEvV221qI SAFIDO Interlocking Blocks CEB Press]
* [http://www.blockprasan.com/startop/ Thai Company CEB Press]

==Potential Upgrades==

* '''Eliminate hydraulic shaker''' use mechanical shaking:
Fact; the soil mix drawer moves several times each cycle.

Use that motion to shake the hopper each cycle. - John S

* '''Reduce the HP required''' to power the CEB Press:
A small electric motor or i.c. engine is coupled to hydraulic pump.

Between the motor or engine and the pump locaate a pully or gear to a flywheel.

When the press is not using power, the flywheel is spun up to full rpm storing energy.

When more energy than motor/engine alone is needed the flywheel slows providing this energy

* [[CEB_Press_Molds]]
* Adaptation of the CEB Press for [[Vegetable_Oil_Production#Process |oilseed pressing]]
* [[CEB 4 design planning]]

{{GVCS Footer}}

CEB Press

2015-03-08T02:44:04Z

John S: add CEB soil testing reference links

{{OrigLang}}

<html><iframe src="https://player.vimeo.com/video/49864277" width="500" height="281" frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe> <p><a href="http://vimeo.com/49864277">The CEB Story 2012.</a> from <a href="http://vimeo.com/opensourceecology">Open Source Ecology</a> on <a href="http://vimeo.com">Vimeo</a>.</p></html>

{{GVCS Header}}

=Overview=

[[File:Machine.jpg|right|400px|thumb|CEB Press (aka "The Liberator")]]
[[File:Liberator_bricks.JPG|right|400px|thumb|Bricks pressed on [[The Liberator]]]]

The Liberator is OSE's automatic, high throughput Compressed Earth Brick Press. It is named The Liberator because it is intended to free people from the single highest cost of living - housing. See [[Cost of Living]] and [[GVCS Naming Convention]].

The CEB is at product release status and is being actively manufactured at Factor e Farm. The presses was used heavily as a part of the [[Factor e Farm Infrastructure Buildout 2011]]. See latest press release on the MicroHouse 4 built in 2014 - [http://www.prweb.com/releases/2015/01/prweb12440135.htm]

The bill of materials cost of the machine is $3000-5500, depending on the version and build process. The machine versions include:
*manual hydraulic controls
*digitally cut parts or stock steel sections
*small or large hopper
*with or without hopper shaker
*automatic controller at 5 bricks per minute
*automatic controller at 10 bricks per minute

We are currently selling the full machine for $11k (specifications below). Our next production run will be in June 2015 [[CEB 100]], and we are currently accepting orders. Terms are 1/2 down payment to secure the order and the other half, including shipping cost, paid after machine completion and prior to the shipment. Proceeds are put back 100% into the operation to fund further research and development. - updated Jan. 23, 2014

==Specifications==
*Version 6 is our current model; exhaustive documentation release comming 4/30/15
*Open source hardware, controller, and software (CC-BY-SA, GPL)
*Controller includes automatic pressing and manual mode
*Does NOT come with a power source - it is powered by a hydraulic power source, such as by our [[Power Cube]] or a tractor hydraulic take-off.
*Full size bricks are 4"x6"x12", plain flat-faced bricks
*Brick height is adjustable from 1"-4"
*Brick dimensional variations: +/- 1/16". Soil uniformity will determine height uniformity of brick.
*6 full-sized bricks per minute at 14 gallon per minute hydraulic flow. Brick pressing rate will increase with a higher hydraulic flow, up to the maximum rated flow of the hydraulic solenoid. At a flow >14 gpm, the secondary cylinder and shaker motor are throttled down to reduce their speed. Hydraulic solenoid valve is rated for a maximum of 30 gpm fluid flow at 3000PSI
*Fuel consumption with [[Power Cube]] running at 14 gpm fluid flow - about 1 gallon per hour
*System hydraulic pressure - 2300 psi
*Comes with hydraulic quick couplers ready to be connected to a power source
*Weight - 1700 lb
*Moving: brick press is moved with forks. Footprint (with legs in the inner position) allows machine to be placed in the bed of a 3/4 ton pickup. It has adjustable legs for uneven terrain. Machine can be moved around on a trailer (not included)
*Material cost: $4500-$6500 depending on sourcing; manual machine (without hydraulic solenoid, machine costs $1000 less in materials
*3'x6' grate for tractor loading. Includes soil deflectors
*Includes hopper shaker to help soil move down the hopper
*Known bugs: machine has currently been tested in multiple day production runs and is stable at 6 bricks per minute. When solenoid valve ran with 2 Power Cubes at 28 gpm fluid flow, the valve would lock up from time to time. May be software, solenoid design, or Power Cube stacking issues, and requires detailed analysis. This bug was not seen when a larger diesel engine was used to power the brick press in 2010 at 30 gpm fluid flow.

=Versions=

See [[CEB Press Genealogy]]

*[[CEB Press 6]]
*[[CEB Press 5]]
*[[CEB Press 4]]
*[[CEB Press 3]]
*[[CEB Press 2]]
*Prototype 1 Completed [http://opensourceecology.org/ceb-phase-1-done/ blog post]

=Details=
The CEB Press takes earth/dirt/soil and compresses it tightly to make solid blocks useful for building. Compressed earth blocks have many advantages as a building material: by making the building materials from the readily available dirt on the building site, they eliminate the need to transport bricks from elsewhere, reducing financial cost and environmental impact. Compressed earth blocks are very strong and insulate well against both heat and sound, making for very energy-efficient building (especially combined with the energy savings from not needing to transport them from offsite). Best of all, the material they use is already on-site and does not need to be purchased -- quite literally, dirt-cheap! See the wiki page on [[Compressed Earth Blocks]] and the [[:Category:CEB|CEB category]] for more details on building using CEBs.

The Liberator has been fully designed and tested by the [[Open Source Ecology]] team. Because the Liberator is an open source technology, you can freely download instructions to build your own from materials you can obtain yourself, or contact ''opensourceecology[at]gmail[dot]com'' to buy a kit or a finished machine.

Building a machine yourself might seem intimidating, but every step of the process is fully documented and the OSE community is available on our [http://forum.opensourceecology.org/ discussion forums] if you need help, advice, or a little hand-holding.

Using the CEB Press, two people can build a 6 foot high (1.83m) round wall, 20 feet (6.1m) in diameter, 1 foot (30cm) thick, in one 8 hour day, though construction time will vary somewhat depending on preparation time, what equipment is available (tractor to prepare the ground and move the blocks where they need to go), the quality of the soil, and other factors. The bigger the block size, the faster a wall can be erected, but at the cost of heavier blocks that are more of a strain to work with. Blocks from ''The Liberator'' average 25 pounds (11.3kg).

See [[CEB Design]] for more information.

=Product Ecology=

[[Image:4b-Constructioneco.png|thumb|600px|center|Construction [[Product Ecology]]]]

'''From'''
*{{Furnace}}
*{{Welder}}
*{{Torch Table}}
*{{Ironworker}}

'''Uses'''
*{{PowerCube}}
*{{Rototiller}}
*{{Tractor}}
*[[Earth]]

'''Creates'''
*[[CEB Bricks]]

'''Enables'''
*[[Workshop]]
*[[Greenhouse]]
*[[HabLab]]

=See Also=
*[http://collections.infocollections.org/ukedu/uk/d/Jh2380e/4.3.1.html Soil Testing]
*[http://collections.infocollections.org/ukedu/uk/d/Jh2380e/4.3.2.html more Soil Testing]
*[[CEB Design]]
*[[Compressed Earth Blocks]]
*[[Cinva Ram]]
*[[CEB_FAQ]]
*[[CEB Press/Rollers]]
*[[CEB Press/ModularRollers]]
*[[Hablab]]
*[[Metric CEB Press]]
*[[CEB Press/Field Testing 2011|Field Testing 2011]]
*[[CEB Press/Videos]]

{{GVCS Footer}}
[[Category:CEB Press]] [[Category:GVCS]]

6-way Blade

2015-03-07T14:35:34Z

John S:

Blade for a bulldozer.

*[https://www.youtube.com/watch?v=loPR0PueoFM Up, Down, Push Left, Push Right, Dig Left, Dig Right (6 way movements clearly shown after 50 seconds) click to view]

*Skid-steer mounted - [http://www.google.com/imgres?um=1&hl=en&sa=N&biw=1317&bih=691&tbm=isch&tbnid=zwCO3WzGr2CDeM:&imgrefurl=http://www.patriottowers.com/equipmentrental/equipspecs/&docid=774Y2QhN2aEniM&imgurl=http://www.patriottowers.com/Data/Images/6%252520way%252520skid%252520steer%252520blade%252520a.jpg&w=500&h=397&ei=XEELT_-JLo6msAKWjZmRCg&zoom=1&iact=hc&vpx=407&vpy=332&dur=310&hovh=200&hovw=252&tx=104&ty=113&sig=110913309104843039427&page=1&tbnh=153&tbnw=193&start=0&ndsp=15&ved=1t:429,r:11,s:0]

*Discussion - [http://www.tractorbynet.com/forums/construction-equipment/85146-please-help-understand-4-way.html]

6-way Blade

2015-03-07T14:33:26Z

John S:

Blade for a bulldozer.

*6-Way [https://www.youtube.com/watch?v=loPR0PueoFM Up, Down, Push Left, Push Right, Dig Left, Dig Right (6 way movements clearly shown after 50 seconds) click to view]

*Skid-steer mounted - [http://www.google.com/imgres?um=1&hl=en&sa=N&biw=1317&bih=691&tbm=isch&tbnid=zwCO3WzGr2CDeM:&imgrefurl=http://www.patriottowers.com/equipmentrental/equipspecs/&docid=774Y2QhN2aEniM&imgurl=http://www.patriottowers.com/Data/Images/6%252520way%252520skid%252520steer%252520blade%252520a.jpg&w=500&h=397&ei=XEELT_-JLo6msAKWjZmRCg&zoom=1&iact=hc&vpx=407&vpy=332&dur=310&hovh=200&hovw=252&tx=104&ty=113&sig=110913309104843039427&page=1&tbnh=153&tbnw=193&start=0&ndsp=15&ved=1t:429,r:11,s:0]

*Discussion - [http://www.tractorbynet.com/forums/construction-equipment/85146-please-help-understand-4-way.html]

2015-03-03T22:25:18Z

John S: Build date updated to June 2015

*Prototype 1- Manual Version - [http://opensourceecology.org/ceb-phase-1-done/]
*Prototype 2 - Automatic Version - [http://blog.opensourceecology.org/2009/10/pressing-times/]
*Prototype 3 - found in OSE Christmas Gift to the World 2011 - [http://opensourceecology.org/wiki/Civilization_Starter_Kit_DVD_v0.01]
*Prototype 4 - October 2012 Build, 4 days - [http://opensourceecology.org/collaborative-production-results/]; November 23 2012 build, 2 days - [http://opensourceecology.org/wiki/November_23,_2012_Collaborative_Production_Run]. These are the latest blueprints for the Prototype 4 machine - produced without CNC metal cutting.
*Prototype 5 - OSE Christmas Gift to the World 2012 - [http://blog.opensourceecology.org/2012/12/christmas-gift-to-the-world-2012/]. These are the the latest blueprints for the Prototype 5 - same as Prototype 4 except produced with CNC metal cutting from 1/2" steel sheet.
:*New Controller - see [[Slade Log]]
*Prototype 6 - Beddingfield Edition - See [[CEB Press 6]]
*v1.0 - CEB Press v4.15 - version to be built and documented April 2015 (--> now June 2015). See [[CEB 100]].

[[Category:CEB Press]] [[Category:Product Genealogy]]

CEB Research 2015

John S:

'''CEB Press Research 2015 for CEB Rev 4.3 Build VI '''

'''[[CEB_Press_Molds Interchangable Press Molds]]''' This was addressed in

'''Increasing production rate;'''
Enlarging the press to produce multiple blocks per cycle increases the production rate.
[https://www.youtube.com/watch?v=OvVof_joc-o Video example HydraForm V2LE]

'''Eliminate shaker components.'''
- steeper hopper sides
- different hopper to press geometry
- load with auger or conveyor
- prepare a soil mix that performs better in the hopper

'''Insulating CEB (lightweight too)'''
Consider mixing as much as 70% perlite, styrofoam or other closed cell insulator into the soil mix. This could be tested with one or two blocks pressed with various insulating materials and soil mixes. Test for shrinkage, compression capacity and R Value. Perhaps a composite block, half compressed earth and insulated compressed earth, might make a better exterior wall because of thermal mass on the inside and insulation on the outside.

'''Soil Auger'''

'''Soil Mixer'''

'''Interchangeable Parts''' at least in three variations 1- fully automatic, 2- power press, 3- full manual

CEB Research 2015

2015-03-02T19:59:23Z

John S:

2015-02-26T15:49:08Z

John S: Created page with "[http://opensourceecology.org/w/index.php?search=tractor+construction+set+working+team&go=Go&title=Special%3ASearch Tractor Construction Set Working Team] [http://opensourcee..."

[http://opensourceecology.org/w/index.php?search=tractor+construction+set+working+team&go=Go&title=Special%3ASearch Tractor Construction Set Working Team]

[http://opensourceecology.org/w/index.php?search=tractor+construction+set&go=Go&title=Special%3ASearch Tractor Construction Set]

[http://opensourceecology.org/w/index.php?title=Special%3ASearch&profile=default&search=Tractor+Construction+Set+Critical+Modules&fulltext=Search Tractor Construction Set Critical Modules]

[http://opensourceecology.org/w/index.php?title=Special%3ASearch&profile=default&search=Tractor+Construction+Set+Design+Guide&fulltext=Search Tractor Construction Set Design Guide]