Tarmo4 Open Differenrial, 3D printed

This is the assembly of the open diff 3D printed differential designed by Teodor Vangelov.
The files are available at https://www.thingiverse.com/thing:481...

I had good success with Sakata PLA (https://3dprintingcanada.com/products.... It old up on strong accelleration with 3S battery.
I didn't had good success with regular PLA: broke at first strong accelleration
Few key points to pay attention to:
- Make sure the screws are well embedded into the casing. Use a drill to increase the chamfer if need be. See video at 0:50.
- Use the provided 13B pinion. This one is shorter than the original one.
- Insert a 3mmx20mm screw in the bell housing to extra strength.
- Use lots of grease.

Thanks to Teodor Vangelov for the great design.