The method I use in my setup, is that when I hang a part in the tank ,I connect the electrode inside a hole that is to be threaded or used as a hole for a screw to assemble all parts .Because IME, the threaded portion of the screw /fitting ALWAYS scrapes off most of the oxidation anyway.
Also I make sure that the hole is seperated from water(or any other possible medium that can aid in corrosion)by use of an oring(usually around the outermost perimeter of the channels)and I coat the whole top in a clearcoat of laquer, covering the exposed Al hole,that I sometimes touch up with a mixture of clearcoat and the dye(if its in a critical area......as in a hole used to mount the top to the base).
.......Not really necessary, but sure makes it look nice when buffed up with some fine grit polishing compound.
@UnLoaded You should really set one up in your shop. Its alot of fun, and really cheap.
And this oxidation is very hard, but also very thin and brittle(for lack of a better word). So it DOES come off in most cases with barbs.
The PROS have a way to get around this.....I suspect touching up the point of electrode contact somehow.Dunno
