Con Lăn Fidget Ép Vòng Bi

This is a fidget toy that uses 608(typical skate 8mm x 22mm x 7mm) bearings. You can buy the cheap ones for this application. This is not load bearing like a skateboard or scooter. There are cheap bearings on Amazon for down to 20 cents each if you buy larger lots of them.

There are also some smaller fidget toys here that use a 625zz bearing(5mm x 16mm x5mm) which is probably better for smaller hands.

Print pieces as oriented.

Cylinder pieces require support on the build plate only to support the ledge on which the bearing will sit when inserted. The cylinder is dimensionally accurate. I had to adjust my extrusion multiplier to 96% so my bearings fit for my Silk Blue PLA.

I printed the bearing holder with 10 perimeters for durability. Do note you'll need to have your extrusion multiplier dialed in or you will see excess material push out perimeters(doesn't look as nice).

Press bearings into cylinders. I tapped mine in place using a piece of pine scrap.

Same can be done with the bearing holder piece on the ends.

Each fidget toy model has a bearing holder and a roller.

Largest model (80mm tall roller - 62mm wide mid)
fidget_roller_608.stl
fidget_bearing_holder_608.stl

Largest model, but a few mm more narrow (80mm tall roller - 53mm wide mid)
fidget_roller_608_narrow.stl
fidget_bearing_holder_608_narrow.stl

Largest model, but a few even a few more mm more narrow (80mm tall - 45mm wide mid)
fidget_roller_608_more_narrow.stl
fidget_bearing_holder_608_more_narrow.stl

Smaller model (60mm tall - 45mm wide mid):
fidget_roller_625zz.stl
fidget_bearing_holder_625zz.stl

Smaller model (60mm tall - 33mm wide mid)
fidget_roller_625zz_more_narrow.stl
fidget_bearing_holder_625zz_more_narrow.stl