keywords:CF2 - npm search,ifc,dwt,keywords:DWF - npm search,Free Apps to View AutoCAD Files | Convert to PDF or Image format,dgn,dwf,keywords:STL - npm...Supports 3D solids, conic, sphere, torus, cylinder, box, & wedge, etc...Supports 3D solids, conic, sphere, torus, cylinder, box, & wedge, etc...