Hello @john.vellek ! First of all, I'm sorry for the delay, too. I want to thank you immensely for the help. What exactly does the CONVTOSURFACE modifier do? Can I convert a SAT file to STL? Could you send me the file of 700 mb so I can try to break it in netfabb and thus open the pieces in the fusion 360? My goal in printing this file is to start a 3D modeling cavern experience, because I'm graduating in engineering and I think of working with the construction of these models in the future with my 3d printer.