A friend has gifted me a little 100W ultrasonic cleaner (typical Chinese) that he was using to clean brass for reloads.
The cleaning solution (salt, vinegar, dish soap, water) seems to have created pinholes, probably where there were inclusions near the deepest drawn section.
Could this be painted with epoxy paint? Or should I try to TIG a thin SS sheet over the bottom tacking it at a few spots to keep it moving?
--Spehro Pefhany
The container is cemented to the ultrasound transducer; it's worth welding/hardsoldering to repair it.
Cleaning solutions that aren't compatible with stainless should go into a plastic cup, and lower the cup into the water bath to do the ultrasound. I use oxalic acid for some cleaning (rust stains) and it's totally nasty if you let it touch stainless.
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