It uses inexpensive Electrical Conduit for the Structure & movement surface. Here is the link. http://www.thingiverse.com/thing:724999 & http://www.vicious1.com/specifications/ You can buy the hardware kit from his site for $240 which is what I did, then all you need to do is print the parts & cut the 3/4" EMT pipe to size you want. You will need two rolls of plastic for the parts, probably 120 hours of printing. I had to buy some extra GT2 belt & wire as I wanted to make mine a little bigger than his kit would make. My version has a work area of about 20"x28", but you can go up to about 3' or so each way. If you decide to make this, be sure & look at all the remixes as their are some improvements of some of the standard parts. Here is a link to a simple openscad file I wrote to calculate the lengths of pipe, threaded rod & belt. http://www.thingiverse.com/thing:948320. I spent probably $350 in parts & then another $100 for a Bosch palm router. My goal is to redo our kitchen cabinet doors with an etched design on them, but am considering cutting aluminum with it for parts on my 3d printer.