Originally Posted by Pastorken
Very cool! But you only say"1/4 vinegar". 1/4 what? Cup, tsp?
And will this work on aluminum, or just on stainless?
Approx 1/4 cup vinegar to 1/4 tsp salt worked for me, but honestly I didn't measure, it just worked. Don't worry too much about the ratio. If you know you have a good circuit and it isn't fizzing, try more salt.
In theory it should work aluminum, but it might require a different electrolyte.