" What I explain here are all my personal opinions, based on my personal experience, and they are not meant to convince the reader of anything. You are welcome to try these techniques on your own coins at your own risk, as I cannot be responsible for accidents, damaged coins, personal injury, or any other catastrophes that may result from following these steps. Of course, I expect none of that will happen, but you never know when someone is going to poke their hand with a cleaning tool, bump the distilled water with the coins on the new rug, and react with a rapid movement that will knock down the microscope on the dog's head, who was distractedly licking the sodium sesquicarbonate spill, rendering him unconscious, all which would incite the coin cleaner to sue whoever suggested the cleaning method in the first place. So please be careful, as I am not liable for your mistakes, accidents, acts of Apollo, etc. Also, cleaning coins kills your back and your neck, so keep a good posture and take breaks often. " 
 
Shaul Roll