Polargraph DrawBot Spool v2
by MakerBlock, published
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I'd highly recommend using these files instead: http://www.thingiverse.com/thi...
Those designs include a two-part spool which is bolted together. I way over-engineerred them, but one benefit is that they also tighten onto the stepper shaft to eliminate wobbling.
I don't remember the spool diameter, but 20 sounds about right for this version. (You could always double check the SCAD file).
Hey, thanks for the file.
I used this in my polargraph and it worked pretty well. I hot glued the spool onto the rotor because I had some wiggle issues in the beginning.
I used 59mm for the "mm per rev" variable, but I think the diameter of the spool is 20mm, right? That should make it ~63mm if you round up. Just thought I'd share that info.
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2. Press fit onto your motor shaft
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