I've finally gotten around to buying a ring mandrel so I can make rings properly (the last one was rounded up on a punch that came with my wooden dapping block!). Now I'm trying to figure out the best way to form the ring before soldering shut. I've seen people use ring-bending pliers, a mallet and mandrel, a swage block... So I thought I'd ask here what you all do and why it works well before I order still more tools. Thanks!