Because we can’t cover everything, we invite you to check those additional resources.

Some tips from Aquachigger

A great blog by CTTodd (Some good info on permission asking too):

(Almost) Everything you want to know about electrolysis, by Detect America:

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.):