Need to fall upon you experts in Cad to see which software can do this. I want to weld together a tapered arch cut from flat steel sheeting using a cnc plasma torch. As cad programs go I guess the term is "lofting" or "extruding" in 3d. Take a square on the working plane and copy it, rotate it 90 deg and place it up and to the right and reduce it 65%, now extrude in an arc from bottom to top. You now have four sides, the top and bottom pieces are curved and have to be "straightened out" so I can cut the flat pieces on the plasma table, the two side pieces are already "flat" and provide the profile to the arch. What I need is Cad software the allows extruding like this and then allows the flatning of a curved piece then saved as a dxf file that Sheetcam can read and convert to machine code. I would like to do 3 or 4 sided designs. Does anyone know a Cad program that allows this type of designing and not have to spend a fortune on it?
Thanks a bunch