Yo-yo

This design is based on the memory of a yo-yo I used to own as a kid. And some googling.

###Printed parts
1 x yoyo_top.stl
1 x yoyo_bot.stl
2 x yoyo_mid_gapX.stl

Also included (in a zip) are two-piece yo-yos with different gaps. They're tricky prints, but may be worth a try.

###Non-printed parts
1 x 623 ball bearing (3x10x4 mm)
1 x bolt M3*20
1 x nut M3
1 x yo-yo string