1.75mm spool holder with skateboard bearing

thingiverse

This wheel hub will fit snugly into a standard spool for Hatchbox material spools, making it easy to swap out wheels on the fly. The small side of the hub is perfectly designed for pressing in 608 longboard/skateboard wheel bearings, which can be purchased right here if you don't already have some. Bones Reds Skateboard Bearings 8 Pack are highly recommended due to their exceptional durability and ability to withstand even the most rigorous use. These bearings will last far longer than your printer, guaranteed. With these bearings, you'll enjoy smooth, seamless performance every time you hit the road or skatepark. The wheels can be swapped out with ease without ever coming loose, thanks to the clever design of this wheel hub. And although the stand is a bit wobbly, it still manages to get the job done admirably. Update 4/8/20: After a recent update, I added a stabilizer to prevent the sides from sliding around. To achieve maximum stability, print 2-3 of these stabilizers and click them onto the sides evenly spaced along the bottom.