3mm to 1.75mm filament converter
by daveseff, published
The bottom spool in this picture is an existing roll and was just placed there for demo purposes.
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Maybe we need a unit like this with three extruders .. two for different source materials that extrudes ~1.75mm/2 to feed a third that outputs the final 1.75mm diameter? Create your own colors, or mix materials of different properties?
It's fairly accurate. I've machined the nozzle a .070 and there are no burrs. I suppose I could run it with a few passes, but my printer is quite forgiving. Once in a while I get an air bubble but that is usually right at the start so I just cut that off.
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The extruder is from an old printer and is controled by some old Thingomatic electronics. Basically set you temp based on abs/PLA in replicatorG and manually extrude for a long time.
My receiving spool may need a stepper driver to wind up the output. That will have to be for a future date. For now I just babysit the machine.
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