someguy6

Be careful about ultrasonic cleaning of old horns. I have read that sometimes, if a horn is corroded with red rot, etc, that the ultrasonic cleaning process can dislodge the corrosion and cause holes to appear in the horn. Do a search for red rot on this (and the other forum) and I'm sure you will find horror stories about this.

Even though an ultrasonic bath doesn't look like it is putting much energy into the item it is cleaning, it really is. This is why ultrasonic cleaning is so effective. In my real job, we purchase these kind of things for cleaning pharmaceutical production equipment. If you google "ultrasonic baths", you can read sales literature about how much energy is put in. It doesn't look like much from outside because all of the energy is concentrated to a very very small area. However, it is enough to dislodge corrosion. If red rot has corroded all the way through a tube, then remove the corrosion then what is left? A hole.

-rob