Diary of a Technocratic Anarchist

This blog is a lab notebook for my work with the Reprap open source 3D printing undertaking.

Thursday, January 25, 2007

Documenting the basic structure of Tommelise

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Recently, I built up the basic structural elements of Tommelise in the open source Art of Illusion (AoI) 3D modelling package. I took the...
Sunday, March 12, 2006

First Microchip PIC16F628 programmed...

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This ought to keep everyone laughing at my expense for a week. Have fun and welcome to it! :-D I built the JDM PIC chip programming board m...
2 comments:

Making Version 2

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Brett has kindly agreed to knock out a few kits for version 2 of the filament extruder and made some very valuable contributions towards its...
Saturday, March 11, 2006

Results of a complete breadown of the quarter-inch extruder...

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After having removed the auger and cleaned it I left the extruder barrel heater on at 120 Celsius to cook out the rest of the polymer out of...

More on polymer fouling of the auger...

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I removed the auger from the extruder again prior to setting up for a new extrusion test, this time with a heated quenching bath. Polymer m...
Thursday, March 09, 2006

More post extrusion filament treatment...

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Solvay lists the melting point of CAPA at 58-60 Celsius. I created a water bath of that temperature on my stove and dumped in the filament ...
Wednesday, March 08, 2006

Post extrusion treatment of filament...

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Reviewing the on-line literature about producing monofilament it would appear that for CAPA and polymorph at least we could use a heated que...
2 comments:

Closing on producing usuable filament...

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I realised late this afternoon that I need not build a framework as such to hold the quarter-inch extruder vertical. Ten minutes with a fe...

A note on polymer fouling of the auger...

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I disassembled the polymer extruder for the first time since it was assembled and tests began. As usual the auger, whose extreme end resides...
2 comments:

Wednesday morning tests...

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07:45 PDT AKA 16:45 ZULU TIME 8 March... This morning I did another test run of the extruder, this time with the barrel temperature set to ...

We appear to have another successful filament extruder concept...

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20:45 PDT AKA 04:45 ZULU TIME 8 March... Not to put too fine a point on it, the upgraded Mk II concept filament extruder... extrudes filame...

Tests on the 6.35 mm filament extruder

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After reviewing Vik and Brett's comments, I decided to see if I could pump polymer through a PTFE barrel with an auger bit. It turns ou...

Monday tests on the 6.35 mm filament extruder

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I decided to run a few preliminary tests on the 6.35 mm filament extruder before I did further work on it. I used semolina as a proxy for p...

Building the 6.35 mm filament extruder

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The weather held this weekend so I was able to almost finish the 6.35 mm filament extruder prototype. I am using Adrian's size convent...

Design study for the 6.35 mm filament extruder

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I put in a few hours using AoI to see if I could make all the pieces for the quarter inch filament extruder work together. I'd like you...
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