Ord Bot extruder groove mount

This thing is a mount for "standard" groove extruder cold ends.
(untested)

I drew this from online specs for the J-Head groove, but I just measured my (non J-head) cold end and its groove is 5.1mm wide while the reference for j-head looked like 4.6mm. This thing has a bevel on the groove holder, but the entire groove holder is 4.6 at its widest. This might allow a little play in the mount, but it should be ok since the grip should be tight.

I'll test and update here.