X Axis Belt Tensioner with Bearings

I took the original model, trimmed down the bits that slide in the grooves in the frame so it slides in freely, but at the same time thickened the front so there's actually more material for the idler pulley to rest against. I also removed a few unneeded curves and the plates around the spring so it doesn't have any supports that are a pain to remove.

Printed at 100% infill with slic3r's automatic supports. I used PLA and it seems to be fine because it just doesn't get hot enough to matter, b