Bigger or smaller? Depending on who made it and what it is made of.
Titanium comes in a lot of grades: purity and alloys. You won’t be
able to shrink any of them. You could cut it but then you would need
to MIG weld or maybe laser weld to close it up. Argon atmosphere.
etc., etc. If it is Grade #1 you may be able to size it up a bit on
a stretcher. that is if it wasn’t stretched to begin with. Talk to
the maker at least. If it was a cheap off shore ring, get a new one.
If it was custom made take it back to the maker.
Bill, Deborah, Michele & Sarah
Reactive Metals Studio, Inc
928-634-3434, 800-876-3434, 928-634-6734fx