This holder sits on top of https://www.printables.com/model/891616-creality-k1-k1c-unibody-riser-frame
This is meant to be low profile, as my printer sits under my desk, so although not optimal, it prints TPU just fine!
The tolerances should be fine on almost any printer, i printed on a K2. I printed the side on the large flat bottom with no supports in PLA. I used .12 layer height, though adaptive would be better, and 5 walls, 25% infill. This is probably overkill though.
The arm has an m4 hole in it for a PC6-M4 adapter to go in, though i ended up not even running one.
The author marked this model as their own original creation.