I would start the fold in the 1.6″ @ 17 degree die. You may need to finish the fold in the 1.5 side of the same die. Once it is folded, you can flip the coin over and reduce it down more in the same die, or smaller die, which ever one it fits into, and then start the Swede process I do this for every ring I make. I don’t always use the swede dies but I always use the 17 degree dies for folding and initial reduction and in conjunction with the swede dies. Depending on your ring size, you may need some smaller 17 degree dies too. I like to finish the ring, after the swede die, on 17 and 25 degree dies to get the shape I want.
I am in the process of getting a larger swede die out on the market but I make Silver Eagle coin rings that are 1.6″ in diameter using the method described above using the 1.5 x 1.6 @ 17 degree die and the largest Dollar Swede die.
Here are the main dies I would use:
Depending on ring size, you may need smaller dies too.
Dollar swede die. Choose the die size on the right:
Would finish on smaller 17 and 25 degree dies. Ring size would determine which die I would use. Which ever one fit.