M8,M10,M12 Hexnut Fidget Spinner

This is a fidget Spinner that uses standard hexnuts (M8,M10,M12) as weights. These should be glued in place.

There seventeen versions:

M12
-- for a 6000 bearing (10x26x8mm)
-- for a standard 608 skate bearing (8x22x7mm) + compact version (smaller diameter)
-- for a 6900 bearing (10x22x6) + compact version (smaller diameter)
-- all as tri or double spinners
M10
-- for a standard 608 skate bearing (8x22x7mm)
-- as double, tri or quad spinner
M8
-- for a standard 608 skate bearing (8x22x7mm)
-- as a double, tri, quad and penta-spinner

The 6900 bearing has the same height of 6mm as ISO 4035 or ISO 8675 M12 nuts.

The provided bearing caps are meant to be pressed into the center hole of the bearing. If the caps do not fit you can adjust the paramters to your liking here: http://www.thingiverse.com/thing:2083000

EDIT: Added double spinner versions for all three bearing types and sizes
EDIT2: M10 and M8 Spinners added.