While waiting on stuff to arrive in the mail , I thought it would be nice to put a symbol on the knob that lowers the z axis. So here you go:

The full design was 3d printed and then sanded flat just to get rid of a small imperfection that were from the 3d printing process.Last step was a quick shot of green spray paint and a tiny amount of weathering to get rid of its dull and boring look. I think it came out pretty nice overall.I understand that this post has not hacking, all of this was to just give it character.