Yet another X-Axis belt tensioner for Anet A8 and other Prusa i3 designs I designed from scratch in Blender.
You can use the stock smooth pulley or a toothed GT2 16 tooth pulley (with 3mm hole).
This tensioner does not bend the Z rods - it uses the X smooth rods for support.
The only additional parts it requires is 3x M3 threads + nuts. Use whatever lengths you have & can fit.
It DOES NOT require longer than the stock belt, and does not hit the extruder when you try to go to X=220 :)
When slicing, do not rotate the objects - leave them as they are (otherwise the will be weaker), and allow supports everywhere.
Check out more of my stuff on http://lokspace.eu!