Tobben Log

Torbjorn CV.

I'm studying RepRap workshops, events where participants build their own generally useful production machines that can produce a large fraction of their own parts.

I want to find factors that predict whether participants become workshop organizers themselves or not.

This would let us design workshops that reproduce and evolve while simultaneously distributing the machines' potential to improve people's standards of living and quality of life on a large scale.

Mar 10, 2016

On compensating curved print beds: [1]

Mar 7, 2016

Tobbens Adding Inductive Proximity Sensor Log#Data

Tobbens Adding Inductive Proximity Sensor Log#Implementation

Mar 6, 2016

Tobbens Adding Inductive Proximity Sensor Log

New model added to D3D Live ISO#Computer Models Verified to Boot

Mar 5, 2016

D3D_Folgertech_Prusai3_Marlin repo

Tobbens Folgertech Kit Assembly Log

Started a Python script for future automation of this pre-flight quality control, published here

Porteus-D3D-Workshop-x86_64-v2.iso

Mar 4, 2016

Reports on speed limit of cheapest and most easily built drive system of single threaded rod + stepper motor. Research suggesting anti-resonant drivers could be cheaper than aggressively threaded lead screws posted in forum thread.

Tobbens Folgertech Kit Assembly Log

Mar 3, 2016

Tobbens Folgertech Kit Assembly Log

Mar 2, 2016

D3D Live ISO#Computer Models Verified to Boot

Some activity on Lead Screw forum thread.

Feb 28, 2016

Mapped OpenSCAD dependencies properly Dependency map

Re-compiled OpenSCAD, uploaded new 64-bit iso: Porteus-D3D-Workshop-x86_64-v1.iso. Updated D3D Live ISO#Instructions link.

Feb 26, 2016

Been through Dependency hell trying to compile CAD software to Porteus. OpenSCAD works now, FreeCAD doesn't.

Feb 25, 2016

D3D Live ISO#On Creating xzm Packages

Feb 24, 2016

Published 64-bit Porteus ISO. See D3D Live ISO#Instructions Still lacks configured Marlin source code.

Tried to compile FreeCAD. D3D Live ISO#Compilation of FreeCAD Abandoned because of difficulties with compiling Coin3.

Documented creation of 64-bit Arduino package: D3D Live ISO#Arduino

Feb 23, 2016

Compiled gcc-5.3.0 package for 64-bit version of Porteus and documented the process: D3D Live ISO#Choice of Compiler Version

Compiled OpenSCAD package for Porteus and documented the process: D3D Live ISO#CAD Software

Feb 22, 2016

Got OpenSCAD 2015.03 to work on the 32-bit Live USB.

Uploaded ~600 MiB iso file here.

Minor changes to D3D Live ISO

D3D Live ISO#Steps to boot Porteus on Macbook Air 2011

Feb 21, 2016

Made repo with D3D Porteus Live USB OS config files

Compiled GCC 5.3.0 for use in 32-bit version of Porteus: xzm package link

Feb 19, 2016

D3D Thesis#Line of Reasoning

D3D Thesis#Background

3D Printer Build Plate

:Updated point 15 on Tobbens Folgertech Kit Unboxing Log

Feb 18, 2016

Got iso size down from 493 MiB (517 MB) to 299 MiB (313 MB). See D3D Live ISO#Stripping it down and updated download link in D3D Live ISO#Instructions

Completed Tobbens Folgertech Kit Unboxing Log with some images and clarifying comments

Feb 17, 2016

Tobbens Folgertech Kit Unboxing Log

Feb 16, 2016

Ordered four LJ12A3-4-Z/BX Inductive Proximity Sensor Switches.

Ordered GT2 belts, pulleys and belt tensioning springs.

Ordered signal switching 1N4148 diodes.

Research On Inductive Proximity Sensors

Updated File:Bed leveling and compensation comparison.ods with Thomas Sanladerer's recommendation and further comments on inductive sensing.

Researched some brackets for induction sensor: Folgertech Kit#Candidates For Improvement Resolution

Feb 15, 2016

New extensive Folgertech resource found: Folgertech Kit#Other Instructionals.

Gcode Modularity

More work on D3D Live ISO. Got Slic3r working nicely, and integrated with Pronterface. Got Arduino IDE working. Latest version ISO: Porteus_with_Pronterface_Slic3r_Arduino_and_D3D_Conf_v0.iso

Prototype Planning

Feb 13, 2016

Further Porteus config. Now handling Pronterface better, updated iso to v1. See D3D Live ISO#ISO images

Feb 11, 2016

D3D Live ISO

Tested out Project Libre with Andreas. File:D3D.pod

Feb 9, 2016

Experiment with 3D printing assembly manual using only OpenSCAD renders as visuals: Clerck assembly manual

D3D Live ISO

Helped by Andreas to create D3D Thesis Project Plan#Map of Deliverables to more easily manage myself and include others.

Feb 5, 2016

Adjustments to lead screw sourcing forum post from yesterday.

Ordered F6-12 thrust bearings for prototyping.

Feb 4, 2016

Sourcing research on lead screws. Posted in forum thread.

Igus links in D3D Printer Design Process#Practical viability of lead screws for 3D printing loads and speeds

Ordered following products for lead screw prototyping: [2], [3], [4], [5], [6]

Feb 2, 2016

Initiated 3D Printer Quality Control Research

Initiated 3D Printer Extruder Research

Researched 3D Printer Bed Leveling. See File:Bed leveling and compensation comparison.ods for full assessment matrix.

Feb 1, 2016

Small change to Prusa i3 Build.

New research and complete rewrite of 3D Printer Bed Leveling.

Small change to 3D Printer Hot End Research.

Initiated 3D Printer Print Surface Research.

Jan 30, 2016

D3D Workshop Roadmap, D3D Workshop Slogans, Folgertech 2020 Prusa i3 build working document, Build Facebook post

Jan 29, 2016

Meeting with Jonathan and Marcin.

• We should investigate bulk prices for key parts (like stepper motors)
• I (Tobben) should collect some stories from the people I've given printers to. Stories of people who got empowered and made some money with their new RepRap knowledge and machines.
• Thesis data collection nr 1 happens tomorrow when Folgertech Prusa i3 kit is assembled on the Factor e farm.

Jan 23, 2016

3D Printer Bed Leveling

Prusa i3 selection Google document

Jan 20, 2016

Created forum thread asking for input on workshop kits.

Jan 19, 2016

CADded LM8UU standard linear bearings into D3D Printer (see repo).

Meeting on kit selection Kit considerations

Prusa i3 Development

3D Printer Kit for Workshop Research

3D Printer Hot End Research

Jan 17, 2016

D3D Thesis#Workshop Reproducibility, some reserve plans created in Critical Path for Thesis Project

Jan 13, 2016

Wrote D3D Thesis Project Plan, sent to examiner.

More insights on lead screws on the forum thread.

Verification from Vermont Rapid Prototyping that lead screws used by Trinitylabs lasts for at least 2 years. Put in D3D Printer Design Process#Practical viability of lead screws for 3D printing loads and speeds.

Jan 12, 2016

Critical Path for Thesis Project, embedded in D3D Thesis Project Plan.

Bought:

• 3xForce Sensing Resistors (Interlink Electronics FSR 400) for prototyping
• RAMBO v1.3 for prototyping

3D Printer Troubleshooting

Jan 11, 2016

Wrote and published D3D Thesis#Team Charter.

D3D Enterprise Logic Model

Jan 10, 2016

Some progress on the lead screw forum thread. Emailed more skillful developers.

Read up on possible choices for D3D Printer Electronics. Ordered smooth rods with linear bearings (sizes 8 mmm and 10 mm) for prototyping. Ordered powdered graphite for lubrication testing.

Jan 9, 2016

Verification of lead screw: working all-leadscrew 3D printer, Stepper Motor#Torque Tests, D3D Printer Design Process#Verification Steps Taken for Lead Screw .2B Stepper Motor Concept

Bought:

• Lead screw stepper motor 1 and
• Lead screw stepper motor 2 for some hands-on testing in February.

Contacted Moore International and Danish 3D for help with choice and supply of lead screws.

Discovered Contraptor that tries to use the concept of modular linear motion units, put into D3D Thesis#Earlier Work.

Read up on 3D Printer Bed Leveling.

Summarized state of lead screw discussion in the RepRap community in a forum thread asking for further insights. Emailed various developers with lead screw designs, asking for experiences, thoughts, insights...

3D Printer Filament Load Sensor

Jan 8, 2016

Some work on the D3D Design Methodology.

Some usage of it logged in D3D Printer Design Process.

Meeting with Marcin, initiated Critical Path doc.

Jan 7, 2016

Checked/commented on lifetimes: Stepper Motor#Lifetime, FFF Extruder, Lead Screw

Structuring of 3D printer design work: D3D Printer Design Process, D3D Design Methodology.

Structured wiki pages such that D3D Thesis is a sub-project of D3D Fusion. Changed D3D Fusion Project Plan to reflect this and initiated D3D Thesis Project Plan.

The thesis project aims to bootstrap the D3D Workshop Kit.

Explained structure in D3D Fusion#Naming and Links

Jan 6, 2016

Meeting with Andreas S, Work Breakdown Structure, D3D Team Project Charter.

Meeting with Marcin Long term Distributive Enterprise Milestones

Wrote something on D3D Fusion thesis#Funding Mechanisms for Open Source Work

Jan 5, 2016

D3D Fusion Printer Conceptual Design

Jan 4, 2016

Wrote some Project Plan stuff on Overleaf. 3h meeting with Marcin. Finished OSE NEGOTIATION INVITATION.

Jan 3, 2016

Defined moving part of D3D Printer's linear actuator. Reorganized code and wrote README (see Github repo).

Jan 2, 2016

Added D3D Fusion printer design#Weight calculation for steel sheet frame and D3D Fusion printer design#Motor placement to wiki. Two minor commits in Github repo.

Dec 31, 2015

Re-organized D3D Requirements. Some progress on Tech Tree of Choices for D3D Printer.

Dec 30, 2015

Meeting with Marcin. Started Tech Tree of Choices for D3D Printer.

Dec 28, 2015

Reworked l_plate and basic frame (see Github repo).

Dec 27, 2015

First rough visualization of D3D Fusion Printer done (see Github repo).

Dec 26, 2015

Meeting with Marcin. Finished D3D Requirements together.

Dec 25, 2015

Some progress in Github repo.

Dec 25, 2015

Made Github repo for D3D Printer OpenSCAD design.

Dec 23, 2015

Wrote something on the D3D Printer design. D3D Fusion Printer Design Needs to be fitted into a template.

Dec 22, 2015

Work on visa application process. Skype meeting with Marcin. Discussion points:

1. Torbjorn DEF Agreement. DEF=Distributive Enterprise Fellow, under the EIR program. Including workshop schedule and number, and your tentative arrival date, and details regarding your university.
2. Locking in design requirements - D3D Requirements - both overall and module by module
3. Defining the 'story' for the thesis. D3D Thesis Story.
4. Beginning discussion on the tech tree of choices that we select to move forward - meaning specific implementation path for each module

Found some data: [7]

Nice discussion on hangout, got some text produced from it: [8]

Asked for data on RepRap Freenode IRC chat. Generated discussion about Prusa i3 Steel. Didn't read it all, so putting it here for future reference: Cut_From_Freenode_RepRap_22_Dec

Dec 21, 2015

Initiated Project Plan D3D Fusion project plan. This is what Martin must approve before we can move on. Made thesis skeleton D3D Fusion thesis#Thesis Skeleton from template in course documentation. Limited progress in FreeCAD.

Dec 19, 2015

Commented proposed D3D requirements: Talk:D3D Requirements. Added Lyman extruder to Open Source Filament Extruders. See Power Tool Construction Set.

Dec 16, 2015

Presented some 3d printer design ideas in D3D Fusion printer design.

Dec 15, 2015

Summarized short research about prior work of Prusa: D3D Fusion thesis#Earlier Work

Sun Dec 13, 2015

Wrote short D3D Fusion#Business norms and science norms comparison between DE norms and science norms.

Thu Dec 10, 2015

Initiated D3D Fusion thesis sketch. Also did a little overview on Large Scale Fused Pellet Fabrication. Got an overview of the MOST lab's work. Put in in D3D Fusion thesis.

Sun Dec 6, 2015

Initiated this work log. Initiated D3D Fusion. Initiated D3D dev spreadsheed [9]. Nice. Please embed spreadsheet in wiki.-MJ Embedding Done