I also remembered them after you mentioned them… They’re Signity’s
I saw them at the MJSA show in NYC, I think 2 years ago. My
recollection is that I thought they might “spin” in place as there’s
really nothing to keep them from doing so. But they’re marketed as a
way to set stones in materials that would otherwise be impossible, so
I guess the spinning may not be a bad thing in those cases?
I’m also not sure which suppliers carry them, but Signity should be
able to tell you. I didn’t see them on the Rio or Stuller sites.
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