Mounting for ZWO EAF motor focus on UNCN2-G2 and TSRPN2 focusers

I did not like the (EU to US) shipping costs and design of the Astroprints version of this, so I made my own - for you to enjoy. It works well with the TS Optics UNC2008 Newtonian focuser.

You can order the flex coupling (metal part) from amazon; 4mm (Focuser)-5mm (ZWO) Shaft Coupling 25mm, 18mm diameter (about 9$ for two). Or the non-flex UXcell version (this is the same used in the OG design, I expect the latter could result in periodic error if not well aligned). The flex couplings that came with the ZWO EAF are 19mm diameter, it is too tight of a fit inside the focuser.
- Any M4 x 20 nut and bolt can be used for the tightening ring. Best is to use a metal-nylon lock nut and Hex Socket Head cap bolts (they don't strip)
Use the screws and rings that came with your ZWO EAF kit

Improvements;

Orientation of the locking screw hole and the EAF itself
Higher stiffness by using more material
Better material (OG is UV resistant PLA that will not hold up in Texas)
Using a Flex coupling

Assembly directions:

use a hex key to remove the focusser knob from the UNCN2-G2
install the Flex coupling on the 4mm focus shaft, make sure it stick out enough for the EAF to catch it later
install the 3D printed mount on the EAF using the ZWO screws
install the tightening screw on the 3d Print mount, mount it on the focusser, tighten
rotate the focusser so that the Flex coupling screw becomes visible on the 3D printed "window", tighten that side
Done

Print material : PETG CF infused (very stiff, shock resistant and UV resistant).
Settings : Ender 3, Bed temp 70C, Nozzle Temp 240
Designed in Autodesk Fusion 360 (Personal use)