I do not use a mandrel for making rings. I make them from boro and do it free-style. You can probably do this with soft glass, too, if you wanted to. But, it will require better control.
Basically, you cut a small length of rod, punty up to the midpoint, and then heat it and move it until it forms a horseshoe shape. You work at getting the ends together until you get a circle-on-a-stick. Heat it evenly and use a reamer to enlarge the hole to the right finger size. If you enlarge it too much, then heat it so that it condenses back down. If you have a metal ring sizer thing, you can ream and check, ream and check until you get the ring to the size you want.
This is how you get a basic ring with the inside left shiny. You can add "jewels" and stuff if you want. You can also make a band, too, if you use a ribbon instead of a rod.
I learned this from a ring class taught by Avery Gross.
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Kimberly
working glass since 1990 - melting it on a torch since 2002
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