P3Steel frame front and back feet

This is a remix of http://www.thingiverse.com/thing:532424

My part touching the ground of the P3Steel front and back plate was a little bit smaller (about 25mm). Also the original one could move freely. I made it more tight, so it won't fell off. See pictures for dimensions.

Avoid scratches on whatever surface supports your P3Steel! These little plastic feet have grooves so that the P3Steel 3mm frame slots in directly.
Note that the front parts have a simple "I" shape groove, whereas the