Hole punching machine - video

Hole punching machine. By Diamleon Diy Builds. 14:45 video:

https://www.youtube.com/watch?v=UPI4Bnlgu0A

Interesting build. Could be useful, but no provision is made for sharpening or changing the punch or dies. Also no adjustment for the stroke in case you might want to just make dimples, or set rivets, etc.