I didn't use any lacquer on the screw part. If there's grease or oil on things it doesn't work as well because the part is insulated to some degree.
I suppose the Chrome might also be removed in the process but who cares.
If you whip one of these up because you want to play around there are some rules.
Mix about a cup or a half a cup of washing soda and some hot water to dissolve it and fill the bucket with that. You don't want to add things like salt or vinegar or any type of acid. You also don't want to use stainless steel for those four anode rods. If you do you're going to need a HazMat team to come dispose of what you created.
If you use the preferred electrolyte which is washing soda then there is no hazardous waste produced.
I found this on the beach quite a few years ago. It was just like a block of rusty colored hard sand. You couldn't see between the links.
I carefully hammered and chipped a lot of it away and then did the electrolysis thing on it.
The trick is you need to make an electrical connection and this link of chain is so rusty that the links don't actually touch each other. The trick is how to make a electrical connection to each link without defacing the chain.
I did scuff the surface a little bit to get it this far, but it still covered in pretty heavy rust and I'm not sure of the best way to continue the process. I was thinking that a c-clamp on each link would make a connection without damaging it. I used to have five or six 1-in C clamps. I'll have to see if I can find them.
This site covers most anything you'd need to know about it.
https://www.metaldetectingworld.com/electrolysis_rust_removal.shtml