[EricH]

Originally Posted by NorthernTaco

Our answer was a 3D printer that we could use for the robot but also could be used to create models of his student's work.

Get a RepRap. Just one.

Then get the metal parts for at least one more, and print the plastic ones, then build the machine. By the time you're done, I guarantee you'll know that machine inside and out. It's almost as fun as building robot parts.