I bought an ultrasonic tank years ago for cleaning parts. I use it for several things. I ultrasonic clean items before glass blasting. This removes any oil, grease or fluids. That keeps the beads from sticking in all the wrong places. I also sonic clean AFTER blasting. I then go through every bolt hole with a small tube air nozzle. I also chase and clean every threaded hole to check threads and make sure no media is stuck in holes. So far in 50 years of building racing engines of all sorts. I’ve had no failures due to media finding its way into an engine.
I use the finest media I can get. This cleans without doing and metal moving.
