Z-Wobble Thingie

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

I didn't have a 7mm pin, but I have plenty of 1mm brass rods; hence this simple variation