After reading that an ultrasonic should make holes in aluminum foil,
I tried putting foil into the little unit we have where I teach (It
says “Ultronic” on it, which makes me suspicious). It didn’t do
anything vivible to the foil, though it does get buffing compound
and general grime off of things. It has not gotten all the junk out
of the piercings and behind the half-point diamonds in my Tom Herman
So, do you think this is not really an ultrasonic unit?