SLDASM File Converter

We can't convert SolidWorks Assembly (SLDASM) files — here's what does work.

Why SLDASM can't be converted here

SLDASM is SolidWorks's own closed format. Its internal structure is proprietary, so no open-source library can read it — which is why no converter outside SolidWorks can open your file.

What does work: open the file in SolidWorks and export it as STEP. We convert STEP reliably.

Convert STEP files

About SLDASM Format

SolidWorks Assembly (SLDASM) is a 3D file format used primarily for Mechanical Engineering and CAD.

SLDASM is SolidWorks' native assembly format, referencing multiple SLDPRT part files along with mates and constraints that define how they fit together.

Frequently Asked Questions

SolidWorks Assembly (SLDASM) is a 3D file format. SLDASM is SolidWorks' native assembly format, referencing multiple SLDPRT part files along with mates and constraints that define how they fit together. Common use cases include: Mechanical Engineering, CAD.