Ring rolling steel - GIF

Ring rolling steel.

https://s3-us-west-1.amazonaws.com/h...ling_steel.gif

Source video:
https://www.youtube.com/watch?v=XTU0Z-FkhtU


Previously:
Spring Forming #1
Lead Sheet Casting
Metal Hose Braiding
Pipe Bending
Thermoforming
Cold Welding