Double Barrel Extruder
by anfroholic, published
While I don't expect anyone to build this I thought it may inspire new designs based i this direction.
This was designed in alibre and openscad.
All files are in the zip file (Warning: File Dump)
I am in the process of designing and building my next printer and will have a new model released then.
If you have any questions please ask.
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Bill of materials in instructions. 4x 624zz ball bearings 2x 4mmx 50mm bolts. Nema 17 motor and I used .75 in brass stock for material feed.
Yes, I rely on the depth of the teeth to provide correct contact with the filament. Unfortunately no, as it sits it will only handle 1.75 mm. It could handle 3mm if desired but the hot end would have to change too.
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Machining the wheels in the lathe was done by trial and error and got it right on the second try. I recoment using a #10-32 tap for use with 1.75 mm filament.
The whole thing was just strapped to a plate of aluminum.
The hobbing tool was a bit weak and would modify before use again.
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