3.5mm Ball Chain Sprocket
thingiverse
Sprocket for 5mm stepper motor shaft (with flat) for use with a 3.5mm ball chain. Intended for use with a polargraph http://www.polargraph.co.uk This design wont slip when its contacting as little as 90 degrees of the sprocket, or as few as five links in the chain. Derived from both:http://www.thingiverse.com/thing:28811http://www.thingiverse.com/thing:12403 Thanks for the inspiration.
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