Because we can’t cover everything, we invite you to check those additional resources.
Some tips from Aquachigger
https://www.youtube.com/watch?v=w7cfVkadI_A
A great blog by CTTodd (Some good info on permission asking too):
(Almost) Everything you want to know about electrolysis, by Detect America:
http://www.detect-america.com/electrolysis.html
Chemical Cleaning
With the pencils, you have a mechanical cleaning and you are able to monitor and check in real time – as you go – the progress of your cleaning. With chemical cleaning, it is sometimes a little harder. Nevertheless, chemical cleaning can be very efficient if you know how to “read” a coin and if you have the patience of practicing quite a bit. Since it is chemical, we recommend caution as well.
A thorough website with a lot of information about chemical cleaning, by Sergei UpstateNY (Sergei T.):
http://www.metaldetectingworld.com/cleaning_preservation_coin.shtml