FastCAM 7.2 (often referred to as FastCAM v7) is an industry-standard CNC nesting software used widely for plasma, laser, and waterjet cutting

• FastCAM Inc. offers a free trial/demo CD (or download) via their website: fastcam.com
• You get full functionality for a limited time or with save/export disabled.

Given that, here’s a practical review / warning of what you’re likely encountering:

While FastCAM 7.2 is an older release, the "2021" designation often refers to the latest stable update or bundled versions provided with new CNC machines. FastCAM tutorial