This old tony

https://www.youtube.com/watch?v=sjn6qeFzQCA cnc sword design

https://www.youtube.com/watch?v=AUaMfb8uqWQ Katana out of titanium by channel Meanwhile in the garage

https://www.youtube.com/watch?v=a2LcYKi0o3U&t=927s taper tooling for mill

links
Lathe

Make it extreme