Lyman Filament Extruder

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http://www.shapeways.com/blog/archives/1973-the-lyman-filament-extruder-may-drop-the-cost-of-desktop-3d-printing-forever.html

Communications

Marcin,

Your work appears to be very interesting.

I don't visualize my being involved in your workshop as I am now 87 years old living in Enumclaw, Washington.

My latest Filament Extruder, Version 6 is the only extruder I am now supporting. It is my favorite extruder and all my filament is now produced with the three I have made. It extrudes 3mm (2.65mm) filament at about 1/2 lb/hour with the gear motor running at 25 rpm. The motor is rated for 33 rpm but under load it only goes about 25. . A faster gear motor with about 100 kg-cm of torque may give 1 lb/hr. I get a filament that varies not more than .05mm with the extruder wall mounted.

This extruder is posted on Thingiverse and is open source CC share alike. The posting includes a BOM. Also there is a video on YouTube.

Hugh Lyman

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