[Jewelry making - Article 00546] - Re: [Orchid] Ultrasonic cleaner and damage to aluminum foil

[Bruce Holmgrain]

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    Years ago, I was taught by watchmakers that this test could be used
    to indicate the dead areas of a UC. The waves while passing each
    other build themselves up and cancel themselves out within the tank.
    Hanging a aluminum foil in the tank would help find the more
    productive areas. 

    These holes can be very small. Hold your foil up to the light. On
    the other hand, maybe your cleaner is weak or isn't working very
    well, but you might remember, "if it works, don't fix it".


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