You need to print both the left and right sections and 2 rollers and then add as many middle sections as you require for the length. Each section is 180mm long (printed upright) and 100mm wide, though this can be rescaled for any length or width.
The belt is made from PVC table cloth and attached together using a hot glue gun, though superglue or PVA glue also works. It uses a Nema17 on each end to drive the roller. A 608rs skateboard bearing is used to hold the roller in place.
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