This is a 2 gear set and mount for a 28byj-48 stepper.
Gears spin freely and without sideways play on shafts.
This is like revision 12 so I've messed around with the tolerances a lot. This rev seems to work well.
24 tooth gear is hand press fit onto stepper shaft which should be 3mm if using the same stepper.
Use short 3m to mount stepper. You can use the bolt cutters on wire cutters to shorten the bolts.
I'm working on a kit so you can use a bunch of different gears together with more than one plate so it's actually useful. :)
If you want any of the actual cad files let me know. I also have the cad file for the stepper you can use for your own projects.
No support needed if printed flat
Designed with the help of spur gear tool in addons.