Since Autodesk discontinued ArtCAM in 2018, most modern conversion and support tasks are now handled by its successor, Common File Conversions in ArtCAM Importing to ArtCAM (.art):

ArtCAM was a popular software for artistic CAD/CAM design, but since it was , finding a standalone "ArtCAM file converter" can be tricky. Most conversions are handled either within the software itself (if you still have access) or through its spiritual successor, Carveco. 1. Converting ArtCAM Models (.art / .rlf)