Quote:
Originally Posted by asid61
I love this thing! Very clever to counterbore the pulley so that it can use the full width of the tube.
Looks super compact and lightweight, and above all very clean, great work. Interesting that you used OnShape for this, I have a few friends who love it or hate it. 
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Thanks. I'm a little bit concerned about the lack of flanges on the pulleys, but with less than .035" of space on either side I just couldn't fit them in. That said, the .035" is small enough to let the tube wall be the "flange" if anything goes wrong and the belt tries to walk.
As for OnShape, I've expressed my thoughts
here.