It was almost finished with skate bearings and thread rod. But it didn't feel anywhere near steady or sturdy enough so I got the ballscrews and rails. I started fitting them but it still felt too flimsy, so here I am.

I also have 3.1Nm Nema23 stepper motors and 542 drivers which I think are fairly good.

I was thinking of turning the remnants of the MDF one into a 3d printer since they look like fun.