Autodesk FeatureCAM 2020 is not a permanently "free" product; however, you can access it for free through a 30-day trial or a one-year renewable educational license. 1. Getting the Software (Free Options)
Autodesk Fusion 360 (Limited CAM)
While not FeatureCAM, Fusion 360 includes integrated CAM at no cost for hobbyists and startups. However, FeatureCAM remains superior for high-volume, feature-based automation. Autodesk FeatureCAM 2020 Free Download - Detail...
The core engine—KnowledgeBase™—allows users to set machining rules once. When you import a new part, FeatureCAM automatically applies feeds, speeds, tools, and strategies. For 2020, Autodesk improved the automatic feature recognition (AFR) for complex prismatic parts. Autodesk FeatureCAM 2020 is not a permanently "free"