ACIS

ACIS geometric modeling kernel is used by many software developers in industries such as computer-aided design (CAD), computer-aided manufacturing (CAM), computer-aided engineering (CAE), architecture, engineering and construction (AEC), coordinate-measuring machine (CMM), 3D animation, and shipbuilding. ACIS has also been used as the foundation of the Shape Manager kernel used by Autodesk in its applications. So the ACIS format is a preferred file format when exchanging data with Autodesk apps.

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Creo

A PRT file is a part file created by PTC Creo Parametric, a CAD program part of the Creo suite that is used to design manufactured parts and assembly processes. It contains part information, including a 3D model and part structure. PRT files can be combined with other parts into an assembly file (.ASM file).

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