Reverse Bowden End Cap

I have a Prusa Mk3 and printed off this amazing reverse bowden setup where the end point mounts to the upper right of the frame: https://www.thingiverse.com/thing:2825557 I had some old M10 tube fittings laying around so I used one of those, but it only kept the PTFE tubing from pulling back out. So when I would remove the filament, the tube would come through with it and I'd have to adjust it all again.

So I quickly threw together this simple end cap piece that screws in from underneath and gives and end point for the tube and also a nice little hole to put the filament when feeding it in. I've included the scad file in case you want to tweak it to your liking, but note that it does utilize the nuts and bolts library here: https://www.thingiverse.com/thing:965737 to do all the real work :-).