Small parts: Does this exist premade and what is it called?
July 17, 2017 6:14 AM Subscribe
Basically take a wheel (flat or with a groove down the middle) and glue two of the same gear or sprocket to either side, so that the gears line up with each other and the teeth stick out completely past the wheel. Or take a really thick gear and cut a grove around the middle of the circumference, deeper than the teeth. What would this thing be called?