Glen, the lovely bride, here, makes jewelry (carving wax, casting, stonesetting). I'm trying to press her into an esoteric one called Plique a jour. I've been drug through a few shows, and never thought to scan for scale/razor hardware. Excellent idea.
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'Tried some stirling 'beads', that look similar to the center spacer. The issue I had was that the hole was more sized for thread than pinning rod.