The risks far outweigh the rewards. You’ll likely infect your computer, violate copyright law, and end up with unstable software that crashes on modern hardware.
But here’s the hard truth:
Instead, choose one of the legal alternatives above. If you loved ArtCAM, buy for $15/month — that’s less than a pizza. If you have zero budget, learn Blender + BlenderCAM or FreeCAD . artcam 91 pro free