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Author Message   Paj Tinkerer Username: Paj Post Number: 7 Registered: 07-2009 Rating: N/A Votes: 0 Posted on Saturday, August 01, 2009 - 01:12 pm:    Hi Fredster, Just one thought, you may find that if you put them in plastic bottles or on a cloth these materials may absorb some of the energy and lessen the cleaning effect. It may not make much difference. Anyway just give it a try. Mine is only a very basic one but the cleaning effect is pretty awesome---brilliant for cleaning the gunge from knurling. cheers Paj glad to be of any help.