How long are you leaving it in for?
Both of the pieces above were in for almost 10
Hrs
Great results ..
I have a larger Set up like yours [ 5 gal, Bucket] & use a Car Battery Charger tho I only use it on Iron Pieces .
Been meaning to make a smaller on 1 or 2 gal, Sheet rock mud bucket W/some type of DC Charger but I was never sure how many Volts Were Needed , I see 12 volts works for you so ill likely try that / I have several sizes put back JIC.
Good Post
Davers
Good directions. Mine is similar I use a folgers coffee can and I converted a couple different appliance chargers 300mA 1Amp. .3Amp is enough for most small items.
You can use baking soda as catalyst also
I did a few 1 hr electro treatments and hit it with polish in between