Jewelers stretch gold rings using specialized ring stretching machines.
Here's a breakdown of the process:
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The Machine: A ring stretching machine essentially acts as a press.
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The Mandrel: The ring is placed on a mandrel-like part of the machine. A mandrel is a tapered, rod-shaped tool.
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The Stretching Process: A lever is used to crank the machine. This applies pressure to the ring, gradually increasing its size as it is forced onto the mandrel.
In essence, the jeweler is using controlled force to expand the diameter of the gold ring to the desired size. This process is delicate and requires skill to avoid damaging the ring.
