Prusa Bar Clamp--No Disassembly Required

This is a replacement for the snap-prone bar clamps in the Prusa i2 design. I was inspired by the idea behind http://www.thingiverse.com/thing:33772, which let you get away with leaving one bar assembled, but I'm lazy, and wanted something I could drop in without disassembling anything.

Requires 2 M3x40 bolts and nuts.