Quarter plus hammer and a few blood blisters...

[Nohope587]

I have seen these around and decided to try my hand at it.
Its not easy and I think I need some different tools. But I am fairly happy with the results.
Apparently my wife is too as she promptly stole it.

 

[aaron7]

I have to ask... how??

 

[STH69]

thats really neat and persistant

 

[Nohope587]

Drill a hole in the middle, put a steel rod through the hole and start beating...... watch out for the fingers!!!....