Hi
These are the best rings to be made from the most common material. I have been making coin rings for a few weeks now. My aunt got me started by saying how she loved her ring she made As a child. I was touched and spent countless hours and coins trying an trying to re create it. I made my brother in laws brother a set of these for wedding rings.
Tools and cost:
Tap and die punch set- 25$ harbor freight
Steel hammer- 15$ any store with tools
Nylon tear drop mallet- 10$ harbor freight
Mandrel- amazon.com 15$
Torch and propane- 25$ any tool store and camping section if Walmart or sporting goods.
Coin- any country any coin. USA coins before 1964 are 90% silver, 10% copper. Post 1965 are made from 90% copper and 10% nickel.