How to Use Electrolysis to Clean Your Metal Detecting Finds

Electrolysis is a simple process for removing rust, corrosion and concretions from your finds. Think of it as a way of "separating" materials that are bonded together. It works great on iron, but be aware that electrolysis can strip the patina off nonferrous items. Use it sparingly if at all.
I was not able to get a definitive ID on the hatchet used in the video. Best guess is that it may have been used to hew logs into beams.