Parametric Ugreen dongle holder for Steam Frame

A small clip allowing you to attach a variety of cheap ugreen dongles (any 12x28mm or 13x34mm shaped one) to the Frame's back as well as serving as the back portion of the DIY headstrap system, although that use is very much optional (see picture 1).

A side effect of using this is also that the dock protects the Frame's type-C port and allows you to charge it without worrying too much about the cable tugging on the USB. I also have wired USB headphones, so this is also ideal for that. And with a USB Ethernet adapter, you can even sidestep your WiFi and have up to 100m of PCVR gameplay. (If you'll do this, I need to see it.)

The dongle is just friction fit. If the dock clip is too lose, you can either pad it or adjust the tension by heating the print (if printed in PLA) and forcing the clip to bend inwards. My unit holds very well just straight off the printer though. 

I've left the heatstrap part on to allow for the use with the original DIY headstrap system or just to allow for some esoteric cable management options.

To modify the clip size in FreeCAD, download the parametric model and set the Dock Size attributes accordingly, then export the body from the file menu.

Export the file as 3mf, so your slicer gets the most precise version.

One caveat of the parametric version is that FreeCAD cannot reliably recompute the fillet mating the clip to the original model, meaning that this version omits it. If you wish to add it, you can use the fillet tool in the Part Design workbench

and select the two edges.  Make the fillet at whatever radius you wish, I recommend 1.85mm.