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2,000-Year-Old Jewelry Was Made Using Sophisticated Diamond DrillsThe nomadic tribes that occupied Central Asia 2,000 years ago used diamond drills to perforate gemstones when manufacturing ...
The bottom one is stationary and has two holes drilled in it, with a container sitting below each hole. The top disc has a smaller, bead-sized hole and rotates from its starting position—where ...
For beads, the next step is to drill a hole into the cylinder with a multipurpose rotary tool and thin needle. Similar to the wet-saw stage, Allen has to keep the beads submerged in water to ...
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