RepRap X-carriage for Igus bushings

I got tired of breaking off the fiddly grippers on Josef Prusa's Igus-bushing-compatible X-carriage, so I beefed up the bushing holders to be simple holes more suitable for press-fit Igus bushings (which you can get at techpaladin.com). Now there's no way you'll break them, and they hold the bushings more securely, too. If you find the holes too small to fit your bushings, you may need to ream them a bit.

You can get the belt clamps from https://github.com/prusajr/PrusaMendel/tree/master/metr