Z-Wobble without pin

Variation of (with much thanks to):
1. Wobble Arrester by twotimes: http://www.thingiverse.com/thing:2151
2. Z-axis floating-nut-arrester by Bophoto: http://www.thingiverse.com/thing:3052
3. Z-Wobble Thingie by juniortan: http://www.thingiverse.com/thing:3079

This model was based on juniortan\'s.
I didn\'t have even 1mm brass rods, so I made more simple variation - without any rods.