Crazy gearbox 10:1

I was obsessed with the size in 31mm and out 42mm of nema17 motor
it's very small to make a gearbox, f****ing :P

- Compact
- Simply
- Suitable material
- Compatible with a variety of Bowden
- Efficiency…

it's just an idea
Using Pulley and Rubber band,
Material: plastic or aluminium

1x pulley input
1x pulley output
4x plulley 2 stages
5 rubber band < 3mm (length, don't know :p)
1x bearing 625zz

Ratio: 1.51:1 for one stage
Totall: 8:1 with 5 stages, (nice :P)
Dimensions