I have been working on my CNC using extrusions and wheels from Open Builds. I wanted a machine that can cut balsa, plywood to assist me in building RC airplanes for my hobby. The machine has a 50 inch cut length, 16 inch wide and 4.5 Z height. All the plates were drawn up by myself and cut by my friend Mike on his CNC. So far I am quite happy with the movement of all axis using the Open Build control and Black box.