Prusa i3 x-belt tensionner upgrade

thingiverse

The Prusa i3 design impresses, but the x belt tensioning method needs improvement. As the x smooth rods aren't clamped at the x-end, tension falls on the z rods. This may be due to low quality rods, causing z rods to bend, reducing belt tension. The resulting x-end issue is visible in the picture. A fast and simple upgrade addresses this: reusing original parts and adding a plate to direct load onto x axis smooth rods instead of loading z rods. This solution uses 2 M6 bolts and nuts, with the central M4 nut from the Prusa i3 idler holder. The bolt securing the idler holder is removed for this modification.