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SolidWorks Viewer
open SLDASM and SLDPRT files

CATIA Siemens-NX CREO SolidWorks Solid Edge Inventor Rhino JT STEP X_T DWG-DXF IGES-SAT-VDA 3MF-STL PLY-3DS-WRL-OBJ

What are SLDPRT and SLDASM Files?

  • Files with the file extension SLDPRT and SLDASM are native 3D files of the CAD/CAM software SolidWorks.
  • SLDPRT is the part file format and contains one or more 3D geometries, sometimes also product manufacturing information (PMI)
  • SLDASM is the assembly file format and is linked to at least one, but usually several SLDPRTs and often also to other SLDASM files.
  • SolidWorks is primarily aimed at small and medium-sized mechanical engineering companies. Right from the start, the focus was on simple, user-friendly operation.

SolidWorks viewer for SLDASM, SLDPRT and SLDDRW

SLDPRT and SLDASM Versions

New releases of SolidWorks with a number of new features appear every year. The releases simply bear the year as the version scheme. The current version is SolidWorks 2024. (02/2024)

File versions created with newer releases cannot be opened with older releases. As of SolidWorks 2024, it is possible to save models up to two versions down. The design may not contain any features not yet available in the old version or these must be switched off before saving.

SolidWorks was the most affordable and the easiest to use 3D CAD system in 1995, both in terms of operation and hardware requirements.

Additional SolidWorks File Formats

  • slddrw Native 2D drawing from SolidWorks, derived from a SolidWorks 3D model
  • slddrt SolidWorks template file. Contains sheet templates for creating 2D drawings
  • The Parasolid modeling kernel used by the software is also worth mentioning. Parasolid X_T and X_B files are 3D exchange formats without a history, but are the first choice for exchanging 3D models between CAD/CAM programs with a Parasolid core such as Siemens NX, SolidWorks and Solid Edge.

Which Program Opens SolidWorks SLDPRT and SLDASM Files?

Typically, a SolidWorks installation is used for this. It is also possible to open with CAD/CAM software that has a SolidWorks interface.

The free eDrawings supports native SolidWorks parts, assemblies and drawings and offers simple markup and measurement functions.

The 3D-Tool CAD viewer also opens SLDPRT, SLDASM and SLDDRW files, but provides extensive measurement and analysis tools. 3D-Tool can be tested free of charge for 14 days.

How Do I Convert SolidWorks SLDASM and SLDPRT Files?

If you do not have CAD software with a SolidWorks interface, the design must be exported from SolidWorks to a common 3D exchange format, such as STEP. For exchange with Siemens NX and Solid Edge, Parasolid x_t or x_b is recommended.

Converting SLDASM and SLDPRT to STEP is also possible with a 3D converter or CAD converter.

3D-Tool Premium includes the 3D-NativeCAD Converter. In addition to native SolidWorks models, this converts models from many common CAD systems into the 3D exchange formats STEP, IGES, SAT and Parasolid X_T supported by many CAD/CAM programs.

Test the SolidWorks Viewer and SolidWorks Converter

3D-Tool is a CAD viewer with many native CAD interfaces, including SolidWorks, and professional measuring functions, demolding analysis and wall thickness analysis.

  • Open and publish SLDPRT and SLDASM for the 3D-Tool Free Viewer or as 3D-PDF
  • Open SLDPRT and SLDASM and save as STL, 3DS, PLY, WRL, OBJ, or PLY
  • SLDPRT and SLDASM convert to STEP, IGES, VDA, SAT and X_T
  • Open, print or publish SLDDRW for the 3D-Tool Free Viewer

Free and non-binding 14-day trial with all functions, the SolidWorks interfaces and the 3D-Native CAD Converter. The trial key activates all 3D interfaces, such as Siemens NX, CATIA, Inventor, STEP, SAT, Parasolid.

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