how to make the double sided coin ring  Tools: ring mandrel  propane tourch (or you can heat on the stove)  ring stretcher  rawhide mallet   quarter....cut your hole...heat the coin (anneal it) till it turns dull red after it stops glowing dip in water to cool. Work it on the mandrel. Repeat the annealing process while working will keep metal soft &amp; workable. Polish when finished.