For a friend with an antique Zeroids robot toy from the late 60s. These are replacement belts as the originals were broken. Printed in flexible filament. These fit perfectly on his zeroid but if it's tight on yours don't force it... maybe scale it a few percent.

i3 style diy

No

No

.2

Printed with .4mm nozzle at .2 layer height with genuine ninjaflex and Microcenter TPE (ninjaflex belt was a little more flexible) on heated glass w gluestick. Stuck extremely well. Used 1 perimeter and no infill which gives you a single width circle and another pass around for the treads.