OnStep Dobsonian with Zero Woodworking

Applies to GSO 10" Dobsonians
with premium Altitude bearing tension adjustment mechanism
Apretura AD10, Zhummel Z10, Orion Sky Line 10"

8" and 12" telescope models of the same lineup will require a different belt
and mild redesign of the motor-clamp block.

Advantages of this design:
* just 3 printed parts (300 tooth pulley of ALT, friction pulley for AZ, motor mounting bracket)
* no woodworking
** no drilling holes
** no cutting openings
* quick removal or drive disengagement
** your scope will keep its original look

Design CAD if you need to modify anything (create free OnShape account):
* https://cad.onshape.com/documents/f11693570747630f33117fb4

Video links of assembly and installation isntructions.
* Part 1: https://youtu.be/fOAaE_Po2ws
* Part 2: https://youtu.be/KCvG_8NTk9I
* Part 3: https://youtu.be/c0LmdYlJm8Y


Big thanks to Bryan Pryor (https://www.youtube.com/user/bryanpryor).
His implementation of friction drive inspired me to design this p