These are simple feet that slide onto the end of 2020 aluminum extrusion. I used some high density foam and double sided tape to finish off the bottom. This adds some shock absorbtion along with a no-scratch surface.
I added a version that has a countersunk hole in the bottom. This allows you to bolt them on if you have threaded holes in the ends of your 2020 extrusion.
2020_extrusion_foot.stl | 975.8KB | |
2020_extrusion_foot__bolted.stl | 1.1MB |