Super 8 Transport roll
thingiverse
Made to transport a 8 mm film. Fits on a 4mm axis (Fischertechnik compatible). Instructions Print either some of the complete rolls or to ease printing, use twice the amount of the half-rolls. Stick on the 4mm pole to align and glue both sides together (e.g. using an Aceton-ABS mix). Then attach to O-Rings to the rolls for smoother transport. I've ordered some rubber rings with 11mm inner and 16mm outer diameter (2.5mm diameter of the rubber ring itself)
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