I have been designing farm trailers and their parts for 25 years. I have practical experience in designing closed sections machined on a 3d tube laser cutting machine (bent closed section cuts). I try to show through my portfolio (uploaded models) what volume of work I am dealing with. I use Solid edge 2020 for design. I trust we can share a lot of useful information with each other! I take parts of 3d model design. Search boldly. I have recently been using a diode laser cutter, so the designs are suitable for both printing and laser cutting.