ASM (Solid Edge Assembly) is one of the data file types used by Solid Edge CAD software. The files with .asm extension contain 3D parts (.prt) which consist of assemblies. ASM by itself, does not contain geometric information – it stores only the rules for connecting parts.
ASM (Solid Edge Assembly) also has no connection with assembly language, though this also uses an .asm extension.
Among CAD applications that support ASM extension are PTC Creo and Autodesk Fusion 360.
A SLDPRT file contains a 3D part created in the SOLIDWORKS design software.
Multiple SLDPRT parts can be independently modified and combined into a single SLDASM assembly file. If one SLDPRT part belongs to several assemblies, then after modifying it, the changes will appear in all assemblies.
SLDPRT are proprietary files with closed specifications. Nevertheless, some APIs (like CAD Exchanger SDK) provide the facility to read and convert them to other formats.
In addition to SOLIDWORKS software, SLDPRT files are supported by Autodesk Fusion 360.
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