Greg Log

2014 August 27 Wednesday

• Moved microhouse lumber from south of new workshop to protected shelter east of old workshop
• Installed lock hardware and vent pipe cap on Composting Toilet
• worked on exploded parts diagram for Structural Powercube

2014 August 26 Tuesday

• built shelves for my bedroom out of scrap materials
• swarmed on workshop cleanup
• updated Composting Toilet CAD file
• led evening walkthrough/tutorial on Sketchup (walked through CAD drawing of barrel bolt latch design for toilet on the big screen)

2014 August 25 Monday

• completed fabrication of latch hardware for composting toilet
• worked on fabricating earth anchors to stake down the composting toilet (against possible wind intrusion)
• cleaned and dried tents left out in the rain & mud after microhouse workshop

2014 August 23 Saturday

• Deep cleaned Hablab kitchen, including dealing with fermented watermelon
• Vacuumed Hablab living room

2014 July 28 Monday

• Continued carpentry for formwork with Arif. Completed 2x4 frames

2014 July 25 Friday

• Continued carpentry for formwork with Victor. Began assembly of 2x4 frames

2014 July 24 Thursday

• Started carpentry for formwork: worked with Victor to setup the space, bring materials, get power to the site, and begin planning.

2014 July 23 Wednesday

• Returned to Factor-e Farm
• Drove Catarina to St. Joe on a hunt for a new laptop.

2014 June 16 Monday thru June 20 Friday

• Wisconsin for CEB Press Workshop, and Midwest Renewable Energy Fair. Returned to Boston June 20.

2014 June 13 Friday

• Continued work on 3D printers, CEB Press documentation, prep work for Wisconsin CEB Press workshop.

2014 June 12 Thursday

• Worked on master SKP file for CEB Press - working with layers, transparencies, etc. for creating functional schematic
• made 2 simple flat boxes with honeycomb - 1 stop ⅔ through, the other let it complete
• changed nozzle size setting in Slic3r to 0.5mm (and also increased layer hight to 0.5mm) - seems to work better! Seems that AO-100 has 0.5mm nozzle after all.
• worked on making fresher STL file for clampshells from SKP
• attempted ¼ size print - failed catastrophically - drifted in Y-axis, etc. Diagnosis: Z-stop too low, so Z-home presses nozzle too tightly agains the bed. Raised z-stop, and print was much better!

2014 June 11 Wednesday

• Presented 3D printing progress, challenges, learnings, including examination of 1st attempt at printing clampshell
• Reviewed CEB Press Drawer Module assembly instructions in morning meeting
• Researched converting STEP files to SKP, and added to STEP to Sketchup wiki page
• Pulled clampshell file from CEB .SKP file, scaled to 1/4 size and exported to STL. Converted to .gcode using Slic3r at 0.75 infill. Print started OK, but about 20% of the way through, it was thrown off of the Y-axis by about 0.5" (20% of the 2.5" length). My working hypothesis is that working in other programs on my computer during the printing caused a serial error. To remedy this (and sleep/screensaver interruptions) I'm going to look into printing from Micro SD Card.
• Very good Micro SD Card printing instructions at the LulzBot site. Successfully test printed bed level check from Micro SD Card.
• Also troubleshot blobby / pad printing on initial error. It was due to too much pressure between printhead and bed - see pictures below. I fixed it by raising the Z-endstop limit screw (see picture) and re-leveling print bed.
• Experimented with layer depth & infill. Found that 0.35 mm layer depth (equal to the nozzle size) works much better than the previous setting (which was 0.2 mm). Also honeycomb infill with a density of 0.3 works quite well for sturdy, relatively quick prints
• Began overnight print of full-size Female Clampshell with 0.3 density honeycomb infill. Fingers crossed!

2014 June 10 Tuesday

• Presented 3D printing results at morning meeting
• Began work on CEB Press .SKP
• Worked on Presentation on 3D Printing - [1]
• Started rudimentary first print of File:01-222-00-2.STL for overnight printing

2014 June 9 Monday

• First day of work. Attended orientation, began worklog, hit the ground running.
• Worked on CEB Press Drawer Module documentation
• Oriented self to basic CEB Press operation, brick compression process
• Swarmed on getting 3D printers up and running - worked on HYDRA Lulzbot. Got it connected to computer, leveled printbed pretty well. Ran into troubles with .gcode files - printer randomly stops prematurely, causing print to fail. Looks like Colten had similar troubles: Colten Jackson Log
• Successfully printed an Octopus on the TAZ out of pink PLA plastic:

2014 June 8 Sunday

Arrived at Factor-e Farm. Got settled in, setup living situation, met team.