Ultrasonic cleaning......
Ultrasonic cannot and never will do the job of soap/detergent and water and not only for the grease.......
My father is jeweler and goldsmith, and has in his laboratory a jewelry washer that works with ultrasonic vibrations, the machine "wash" the items in hot water and soap though!
I can say it does not work that much, rather, the action is nothing but a pan and it is a pretty stupid thing, and the only way it do something is thank to the hot water and soap,In fact my father use this just to "soak" the dirt, then agitate them in a strainer into soapy water and then pass items through an high pressure steam jet that actually take off the last part of dirt in the internal narrow parts, it also works to dry them....
So for obvious reasons I think the ultrasonic alone would be a pretty stupid thing, and anyway a pretty unuseful feature also......
[this post was last edited: 12/7/2011-14:36]