anti wobble z axis

Another way to compensate z wobble:

Separate the parts in the file and print them in abs or nylon. After printing
they must be polished with a triangle rasp because
parts should be sliding easily.
The outer ring (the one with a bigger middle hole) must be attached to an x-carrier.
Do not tighten the screw too much because the
plastic is very thin and fragile.

VIDEO: http://www.thingiverse.com/download:3344850