I used Visio to draw up my metal CPs on the Two-Headed Beast. Saved it as a .dxf, put it on a flash drive, and gave it to my friend. He plugged the flash drive into the CNC laser he has at his work, selected the .dxf, and the CNC cut the panels out PERFECTLY. I couldn't believe how simple it was and how smooth it all went. But there appears to be 6 or more file formats that various CNC machines use.