Slim gear spinner

need:
608 bearing - 3 pcs
688 bearing (8x16x4mm) - 2pcs
M3x10mm bolt - 3 pcs
self-locking nut M3 - 3 pcs

Side gears are the same as in my gear spinner.
https://www.youtube.com/watch?v=lY2Lv3p4jDY

Dimensions for bearings in stl-files:
d608 = 22.05;
dIn608 = 7.9;

// center bearing
d688 = 16.05;
dIn688 = 7.95;

with cura and nozzle 0.3 I get a good tight fit bearings without backlashes, and without the press, bearings are inserted by hand.