Tarantula Z-Carriage Stabilizer

I used these x- and y-axes belt tensioner http://www.thingiverse.com/thing:1580899
but I was not happy about the Z-Carriage stability when using the x-axis belt tensioner, so I made a much stronger carriage. :D

Carriage consists of 2 parts front and back plate.

Quick note, it's a quite tight fit, so I would recommend using 1-2% upscaling if you want a slightly moore loose fit.