Makibox Z axis with Brass threads and LM4UU bearings

This is a replacement Z axis knuckle designed to work with LM4UU bearings and an acme threaded brass nut (both of which can be had via EBAY for fairly cheap). Fixed the wobble issue AND eliminated the sag in the default mount. Stiffens up the whole assembly. Mostly though I built it because my stock mount was damaged in shipping. Oh yeah, the first file is just to show the thing assembled. I doubt it would work if you built it complete. ;)