I always thought that ultrasonic cleaners were a bit of a joke. But I recently visited a jeweller friend of mine in his studio, and he has an ultrasonic jewellery cleaner that he demonstrated for me. I was amazed! I put my FILTHY old keychain in the ultrasonic cleaner, and literally watched the crud fall off it. I wish I had a use for one of these, I’d love to own one!
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