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As an old fart, my mind may be gone, but I seem to recall that in a post addressing cleaning rail and freight car trucks someone mentioned a specific piezio electric crystal that could be attached to a container and create an ultrasonic cleaner. Has my mind wandered off into lala land? Or does someone else remember this as well? I am seeking specific information because I would like to try constructing a cleaner larger than the one I now use. <br /> <br />I have been unsuccessful in finding the initial post that got all this started. Any help would be greatly appreciated. <br /> <br />Tom
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