Prusa i3 MK2 X-Idler Tensioner
thingiverse
On my Prusa, the x rod tensioner screws causing belt tension also put stress on the z-axis motor mounts and top z-axis rod mounts at the top, resulting in excessive friction and binding. Since I needed just a bit more tension on the belt, I wanted to make the rod tension independent from the x-axis belt tensioner pulley. To do this, you'll need a few screws and nuts (3mm, I think). Luckily, my Prusa Kit came with extras that I used. The pully slide (x-end-idler-front-tensioner) fits one way. If it's too tight, simply flip it around.
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