3D 2D CAD Files. Download. Download 2D and 3D files of Normann Copenhagen products. Having problems downloading? - Please contact us at. 3D (-1) (Exporting 2D DXF files) We design in a 3D world, but many parts are manufactured from flat sheet. The flat pattern of a sheet metal part. Design Review CAD viewer software lets you view, mark up, print, and track changes to 2D and 3D files for free—without the original design software. Work with.