Bottom-up Design:
In bottom-up design, you design individual parts that you add to assemblies.
To create parts, start by creating a sketch with sketch tools, or by importing an existing sketch (for example, from an IGES or DXF/DWG file).
STL (Stereolithography, filesize: 442 KB), OTHER (Other, filesize: 436 KB), SLDPRT (SolidWorks, filesize: 957 KB)