In this unnarrated, “chill” episode of the amazing clockwork maker channel, Clickspring, Chris fashions an amazing fine silver and jade enamel pendant for his wife as an anniversary present.
Chris etches a guilloche pattern (guilloche being a decorative technique for creating twisting, repetitive patterns) into a piece of silver. He uses a rose engine to accomplish this. Rose engine, you say? Yes, a rose engine is a kind of specialized lathe that uses rosettes or cam-like disks to etch patterns. You can learn more about them here.