3DS (which is compatible with 3ds Max), and. STL (which is compatible with SolidWorks).
SketchUp Free – This is a free online version of SketchUp 3D modeling software.SketchUp Comes in Four Editions Which Include: Downloading 3D Models from the SketchUp 3D Warehouse.Which SketchUp Editions Allow Accessing SketchUp 3D Warehouse?.SketchUp Comes in Four Editions Which Include.STL file format, users make the 3D models to be 3D printable and thus the reason why SketchUp is very popular in the 3D printing industry.