Motor gears.

Parts:
- 3 x motor_gear.stl: https://github.com/spegelius/Dollo/b...motor_gear.stl

Print settings:
- material: PLA. I haven't tried this in PETG so cannot comment on that
- perimeter first
- 3-4 perimeters. This one should be tough
- 60% infill
- 0.2mm layers
- maybe use bit higher print temp than normally, if you can get a clean print

Now we get to the vitamins, first time for non-printed parts on this build.
- 3 stepper motors. I ordered these from Aliexpress for 35 euros. No idea how good they are... make sure the motors have a flat part on the shaft.
https://www.dropbox.com/s/uoh9kkk2cv...38.04.jpg?dl=0
https://www.dropbox.com/s/5y8peunudo...38.10.jpg?dl=0
- 3x M3 nuts (optional)
- 3x short M3 grub screws (optional)

https://www.dropbox.com/s/e8kxu1m8vx...29.28.jpg?dl=0

Assembly:
- if you want to use the grub screws, insert the M3 nut into the slot in the gear, use pliers to force it in until it's in line with the hole in the gear and then insert the grub screw and screw it in but not too deep so that it won't obstruct the motor shaft
https://www.dropbox.com/s/1xqitaag0s...37.40.jpg?dl=0
https://www.dropbox.com/s/wj1lemmzvj...38.43.jpg?dl=0

- next, try to slide the gear onto motor shaft. The flat part and the screw should align with the motor shaft flat.
* Important! If the gear is too tight, don't use excessive force, like hammer unless the motor shaft is supported from the motors back. I hammered away and the motor shaft moved out of position which might not be a good thing. I've yet to test the motor, so I cannot tell if it's broken, but rotating the shaft by hand feels different comapred to other motors.
* instead of force, better us small file to open up the hole enough for the gear to slide in position. Make sure to use the file evenly on the hole so that the shaft is in the center.
- proper position for the gear is about 2.2mm from the motor body:
https://www.dropbox.com/s/7nemsces57...53.46.jpg?dl=0

- you can check the position with the motor mount part. No need to screw the mount on at this point, just hold it by hand and see how well the gear centers on the rack:
https://www.dropbox.com/s/x1rza55p1j...54.07.jpg?dl=0

- when the gear is in position, tighten the grub screw if you use these