First, what is FASTCAM? It's a CAD/CAM software used for CNC machining. The 72 version might refer to a specific release. I should mention it's a 2021 version. But wait, 2021 is a bit old now. Need to check if there are any recent versions. However, the user specified 2021, so I'll stick with that.
Check for keywords like "FASTCAM 72 Download 2021", "legal download", "CAM software features", etc., to ensure SEO. Maybe include a meta description summarizing the article.
Now, start drafting each section with these points in mind.
Conclusion: Recap the main points. Highlight the benefits of using FASTCAM 72, encourage legal use, and perhaps a note on future versions or alternatives. Make sure to keep it positive and informative.
Also, consider that the user might encounter errors during download/install, so troubleshooting tips should be specific. Maybe include steps like checking the download speed, verifying the source, etc.