Import 2D CAD File Import DXF/DWG You can't import 3D shape It's better clean the cad file , leaving only the needed geometry before importing the file. With ECAM you can import 2D geometries from DXF / DWG files. 1 1) First select the plane you want to import the geometries you can select the XY or the XZ planes. The XZ is the lathe plane. 2 2) From menu [FILE] -> [OPEN FILE] Choose the file you want to import.