I am proposing a redesign of the RepRap from the ground (build surface?) up. I realize that this is a much larger endeavor than it might need to be to win the prize, but my thinking is this: if the spirit of the prize is to have people make a living off this device, we should design a machine that can fulfill the Prize specs without being hindered by any limitations of current RepRaps. Follow tby cmchap - Kartik M. Gada Humanitarian Innovation Prize