Ultimaker adjustable axis (bearing) cap

Another tweak to a MoonCactus design. This design prints the screw, locknut and base. I use this in conjunction with MoonCactus' Fully parametric bearing-friendly axis caps (non-adjustable). So I used one of MoonCactus' non-adjustable caps on one end and then my adjustable end cap on the other, but I suppose you could use an adjustable end cap on each end of the rod.

MoonCactus suggested a shorter threaded component so it doesn't stick out so far, so I've included a shorter version that us