Power hammer from angle grinder - video

Power hammer from angle grinder. By Diamleon Diy Builds. 18:00 video:

https://www.youtube.com/watch?v=n8KffJgR1GI

Not a thumbs up. What if he tries to forge a piece of metal about an inch thick?

Needs a chain guard and the hammer needs to be connected to a flexible link not rigid on a crank

Tomás de Torquemada would have loved that...