How to make a ring out of a simple coin, kopeck
Sat the coin on an edge.
Knock on the edge with the spoon wrapping the coin around without a stop.
The spoon is recommended as the “flatting” is running under a more accurate control.
As soon as the edges of the coin bend to a needed height of a future ring, make sure that it remained round and kept its shape.
Then we drill a hole in the middle of the coin.
Then we bore the hole to a needed diameter.
We polish the insight of the coin… That’s ready
Source: Roman UrsuHack