Tarantula X-axis idler with integrated tensioner

This is an X-axis replacement I made for my Tevo Tarantula (but will work for any 2040 extruded aluminum setup).
I took the inspiration from http://www.thingiverse.com/thing:1580899 and modified it to be easier to print and use a single idler wheel instead of the 2 dinky ones that come with stock Tarantula.


BOM
1 - Idler wheel
1 - M5 25+mm w/nut for tension wheel
4 - M4 20mm w/nuts
* 1 of these should either be a flat headed screw - for the idler axle
* or you could use a