I thought this would be an interesting share.
I needed some “corner bumpers” for a small production run and decided to try injection molding. I built a simple injection mold machine but the hard part really was the mold making. Designed with Fusion 360. After some practice I managed to make myself a nice aluminium mold using the trusty MPCNC. The bumpers turned out great. I can do 2-3 pairs a minute.