@Jonaschuzzlewit@thatguyoverthere Yep! You dilute it 1:10 in water. I haven't looked at the "why" for it, but it works extremely well and doesn't attack bare metal at all. Here's a screenshot showing three rusted landscaping bolts in water, molasses, and evaporust respectively.
@Jonaschuzzlewit@thatguyoverthere you should watch his video starting around the mid point and skip around towards the end. He does before and after weights as well as tests on bare aluminum and metal shavings to check mass loss and damage to alternative metals. Vinegars work really well, but as most who've used it to cleanup tools know it can get too aggressive quickly.
@BowsacNoodle@Jonaschuzzlewit@thatguyoverthere Molasses has some lactic acid and is full of sodium/magnesium/potassium and other mineral salts which act as electrolytes. Diluting it makes a really effective and sports drink and a lot of people even add vinegar or lemon to it. Never would have thought it was also a good choice for gentle electrolysis, very cool.
@ProfessionalNEET@Jonaschuzzlewit@thatguyoverthere I wonder if the mineral salts are a part of it. I've noticed it almost seems to convert rust and doesn't just strip it off and dissolve it. Like the net attack is so gentle on the metal that it takes even the harmless "surface rust" coat that old tools get off.
@BowsacNoodle@Jonaschuzzlewit@thatguyoverthere I wonder the same, like if the presence of the mineral ions in the solution prevents them being pulled out of the steel into the solution, or maybe its just due to general gentleness of the electrolyte solution. I really have no idea.
Most of the common elements added to steel are present in ionic form in molasses. I'm curious whether something like gatorade with a small amount of acid added performs any differently. If it does I would investigate the zinc(those nails look galvanized) and manganese salts first. It would be an interesting panel of experiments and fairly straight forward to look for their effect if indeed there is one.