yacs mega spinner

thingiverse

Here's another coin fidget spinner that's really something big! It uses an impressive 32 twenty-cent coins stacked in 8 layers of 4 coins each. The center hole is designed to accommodate the standard 608 skate bearing, which measures 22 millimeters by 7 millimeters. You'll find two ready-made STL files available - one is a printout of the design I've used myself, while the other has no notches, giving it a sleek wheel-like appearance.