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
Category:Machine design