Electrolysis Uses

[painter777]

Can you just drop in the lid?
I don't believe it would affect the ceramic other than possibly staining it with a rusty colored residue.
It should just attack the rust.
Before I tried it.......... I'd seal the painted ceramic. By masking off the rusty staff and spray the painted ceramic with a clear acrylic. Your choice Satin or Semi. This should seal in the painted ceramic, possibly only having to wash off any residue.
I haven't tried this before (doubt it any have ) but this is how I'd try.
I know the tank will pull paint off of rusty metals like mags.

Good Luck
Charlie-painter777

Link:
Surplusrifle Forum View topic - How to make and use an electrolysis tank *PICS*