I was working on a mold that was giving me problems and decided to try a super clean by setting up an Outer/gunslick electronic bore cleaner system, WOW it was amazing how much lead and junk was pulled out of that mold. The mold started casting better and it got me thinking of using a ultra sonic cleaner since the gunslick electronic bore cleaner solution is no longer available. How well does an ultra sonic cleaner remove lead and tinning seeds from a mold? Just a curiosity before I invest in more equipment, which I am not opposed to, any reason to add more cool stuff to my shop is good enough for me.