SLDPRT

SolidWorks Part Document is the file format used by SolidWorks to store 3D parts. Solidworks files use the MS Compound Document Format (CDF). Early versions had a .prt extension, despite this being used for a number of other formats, but this was later changed to .sldprt.

Libraries

 * C#: SolidWorks API
 * C#: OpenMCDF

Links

 * Discussion of the various PRT formats