Electric generator

This is a 3d printable, working electric generator / dynamo with a built-in gearbox.

This generator is capable of producing ~12 volts and ~1.75 micro amps. (For comparison, this is about as productive an AA battery)

Contents:

hull part 1
hull part 2
hull part 3
hull part 4
hull part 5
gearbox hull 1
gearbox hull 2
gearbox hull 3
2 big gears
2 medium gears
a crank gear
a crank
rotor (2 parts)
rotor shaft (3 parts)
small shafts (5 parts)
bearing replacements (2)
extra gear for higher gear ratio

What is needed:

3 coils (Max size ~ 46x32x42 mm (The holes for the coils are oddly shaped, so a slightly larger coil could fit if it would be shaped right))

12 neodymium magnets (Max size: 10x10x5 mm)

2 bearings (Outer diameter 21 mm, hole diameter 8 mm) Note: These can be replaced with the provided bearing replacements.

Some wire (a 55 cm long wire should be enough)