3D Printer Feet 2020/4040 Extrusions - TPU

Pretty straightforward, print these in TPU and install with drop-in t-nuts. I print them with high infill and typical TPU settings. 7mm height should be acceptable for most printers, the 15mm is for if you need to create a bit of clearance. 

I suggest using an M4 bolt/screw of appropriate length depending on which height you use.