3.5mm Ball Chain Sprocket
thingiverse
A 5mm stepper motor shaft sprocket featuring a flat is designed for use with a 3.5mm ball chain, ideal for polargraph applications (http://www.polargraph.co.uk). Its unique design ensures minimal slipping even when contacting only 90 degrees of the sprocket or as few as five chain links. This innovative creation was inspired by designs found at http://www.thingiverse.com/thing:28811 and http://www.thingiverse.com/thing:12403.
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