Mount is in constant development, not all parts may fit together perfectly, sawing or modification of 3d model may be required. I will be posting updates.
You may need to print additional pads (name: BIGwasher)
and install them between the main gears and next to the bearings.
Fell free to message me.
Currently I use 3d printed worm gears, in the next month I have a plan to buy:
https://www.rapidonline.com/reely-brass-gear-and-steel-worm-drive-set-1-30-50-8939
and replace old worm drive with new, made of steel.

I posted a model of the telescope's saddle in a separate post.

hardware parts:

• 2x Nema17 stepper motor
• 2x GT2 Belt 10x180mm + 4x Wheel 12T - 6mm
• 2x 200mm long aluminum pipe 35mm
• 6x 61807 2RS ( 6807 2RS) 2RS 35x47x7mm bearing
• 4x 625RS 5x16x5mm bearing
• 20-30x M3 x 20 screw
• 40x M3 Washer and Bolt
• 1x threaded inserts set for 3d printing
• 15x M5 x 20 screw
• 10x M5 x 30 screw
• 30x M5 Washer and Bolt
• 2x M7 screw, washer and bolt

OnStep parts I used:

• Wemos D1 R32
• CNC Shield v3
• 2x TMC 2209 stepper motor drivers
• power supply