These are some Squash ball holders that I quickly designed for the Voron V2.1.
I was concerned when moving my printer about how the feet are attached to part of the Z-drive and the potential for this part to be damaged should a foot catch when being moved, etc.
These bolt directly onto the extrusion (m5 x 30 BHCS, twist-in t-nut), require no disassembly of the printer, and register against both the front and back of the Z drive, as well as the base.
It's now very sturdy and gives a bit more room beneath the printer for airflow / extra fan mounting, etc
EDIT: step file is now in the package
Printed for the Voron, by the voron.