Ultrasonic cleaning. Any good?

Type ultrasonic in the search box upper left of page and you will find loads of onfo.
John1

I wouldn't clean coins with anything.

Ultrasonic (or "sonic") cleaners are good for cleaning metal detecting finds - removing caked-on clumps of physical dirt and corrosion, where causing damage to the coin's surface is not a primary worry.

For coins pulled from circulation or sitting in collections, sonic cleaning is not optimal, for two reasons.

1. Sonic cleaners only work with a detergent. Using plain distilled water in a sonicator is no different to using plain distilled water in an ordinary bucket. The detergents usually sold for sonic cleaning are proprietary mixtures; who knows what's in them, and what they'll do to a coin's surface over time.

2. In theory, sonication would work excellently for coin cleaning if you could find a way to magically suspend the coin in the solution without the coin touching anything. But anything touching the coin - another coin, the sides or base of the sonicator, your fingers, even a string tied around the coin - will rapidly rub back and forth in the sonic bath, causing friction. Friction of any kind is something you want to try to avoid in any "proper" coin cleaning operation.

Leave the ultrasonic cleaners for the detector finds, the jewellery and the lab glassware.

I know you are a new member so I am going top give you a straight answer that everyone else (except Sap) seems to want to joke around about. With coins you never want to clean them with anything, you want to leave them original just as you would a piece of antique furniture. I know allot of new collectors think the shinier the better when it comes to coins but that is definitely not the case. You never want to even touch a coin on the face if you can help it. So please do not clean a coin with anything, not even dish soap or anything because it will do nothing but make the coin worth less money every time without exception. There is the metal detecting finds like Sap mentioned above where sometimes you have to rinse them off or something so you can even see what they are, this is fine but you want to avoid it if you possibly can

, Anaximander!

Bryan -

did you mean just carl?

and the price is way to much, I seen one for $11 and $5 shipping from england to australia the other day.
im a newb myself, but I have read on here that de mineralized water is the best thing to soak the coins with to remove everyday grime, soak for about a week, rinse with clean de mineralized water and pat dry, I use a glass cleaning cloth to dry them, then I put them in acetone for a day before placing into 2x2's, the acetone removes body oils from the coin which will leave a black finger print over time if left.

A rock tumbler maybe.....: )~