Solidsquad-ssq Mastercam ^new^
CNC Software offers a free version for learners. The trade-off is that all files are watermarked and cannot be used for commercial manufacturing. However, you can learn 100% of the toolpath strategies. It does not require a dongle or crack.
If you cannot afford Mastercam, consider legitimate low-cost CAM: - Free for hobbyists and startups, $680/year for full 5-axis. - FreeCAD (Path Workbench): Completely open source. - EstlCAM: Very cheap (approx. $60) for 2.5D routing. Solidsquad-ssq Mastercam