Copper 4.12mm Heavy-Wall Tubing, Hard, 304.8mm Length Gem Gauges & Sieves Use it for polishing

Use it for polishing

Color: White

257 lbs (116

The mandrel diameter tapers from 5mm to 1

drilling pearls and stone beads and when shaping and refining wax models (maximum speed is 0–5

Copper 4.12mm Heavy-Wall Tubing, Hard, 304.8mm Length Gem Gauges & Sieves Use it for polishingThis hard copper heavy wall tubing is ideal for hinges, making beads, and for creating custom tube settings; this size fits a 3. 5mm stone. Choose a section of heavy wall tubing with an outside diameter about 0. 5mm larger than your stone, and enough thickness to allow you to cut a seat to support the stone. Hard copper tubing is significantly work hardened and, though it does not bend readily, it stubbornly holds its shape after forming; it is ideal