This is a small project I “finished” recently, but yet to try out in anger on the CNC.
It started out life as a really cheap 4-axis that came with a 6040 router. I don’t have any before photos, but it was really bad. It was belt drive (which is fine in itself, actually better than what I’ve done) but none of the pulleys ran true and the belt tensioner was a normal bolt with a piece of pipe slipped on it. Genuinely useless.
I hadn’t built anything proper using gears before, so I used it as a little manual machining project to learn off the very talented folk I’ve been working with. So basically everything on the backend is new.
I’ll update with some footage once I get the chance to mount it up on the CNC and turn/index something.