Mendel Extruder w/Compression & No Epoxy
by vik, published
An M4x40 screw is now used to strengthen the M4 stepper motor adjustment screw, and a cutout allows one of the two M4x40 mounting screws a little more room so a washer can be used underneath its head.
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RepRap Un-plugged. Nah, that just does not make much sense.
KISS - well its a known acronym, and one I use in a new RepRap experiment.
I am involved in a project "restoring" (read: optimizing but trying to maintain the "historical" setup) of Kulitorums old RepRap, and this design of the direct drive extruder is perfect for the job.
Thanks Vik. 8-)
Torque is fine, with PLA at least. It's not a fast extruder but it does work. I have a NEMA17 from Sparkfun in mine. I cut the grooves in the shaft by hand with a dremmel tool.
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No epoxy needed. Just drill two 2mm holes through the holes in the clamp right through the PTFE rod. Follow up with a couple of woodscrews and she's well stuck.
If your PTFE rod does not easily fit in the cavity provided, warm the cavity with a blowtorch or hot air blower of some description.
The mendel_misc.inc file is found here:
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