Prusa i3 Y belt tensioner

An adjustable Y-axis for aliexpress Prusa i3 printer with laser cut plastic frame. Inserted instead of the default part. You will also need a pair of rather long m3 bolts and nuts.

Warning:
This part is made with 8mm wide X 7mm tall pegs, check that it will fit your printer beforehand! :)
Here is a link to a design with different sized pegs: http://www.thingiverse.com/thing:937967

Addition:
v3 tensioner has smaller profile so if you are worried about it affecting print width you can pri