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| Name | SolidWorks Part File | 3D Studio |
| File extension | .sldprt | .3ds |
| Original software | SolidWorks | 3D Studio (DOS) |
| Binary | ■ | ■ |
| ASCII | ||
| Polygonal | ■ | ■ |
| NURBS | ■ | |
| Solids | ■ | |
| Smoothing groups | ■ | ■ |
| Textures, materials | ■ | ■ |
| Developer/Owner | Dassault Systemes | Autodesk |
| Description | ||
| Specification | ||
| Format features | Part file CAD system SolidWorks | Has a limit on the number of polygons in a single file. Today is considered obsolete |
| Viewing software | SolidWorks Viewer 2011 (free), Delcam Exchange 2011 R2 (free), eDrawings (free) | GLC_Player (free), MeshLab (free) |