35mm film spool (variable sprockets)
by kellyegan, published
This is a module for openSCAD that creates films spools with a varying amount of sockets. It was inspired by mlagana's spool but completely redone.
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The included STL has 8 sprockets but using the scad module spool() with a parameter will generate a spool of a different number of sprockets. Because of the spacing of the film holes changing the number of sprockets changes the circumference (and radius) of the spool.