BTW ..again ..bloody nice result. ..my theory on the patchy look on the plates is that its where vinigar slashed up and stayed as drops while doing its vinigar on copper thing.
I'm guessing the top side of the plates were a lot less patchy
I think you are right mate. It does look like the vinegar has cleaned these areas better where it has 'pooled' just before dripping. Top side of the plates is spotless slean as is the first 3mm up the copped bubblers where it held it's pool level :handgestures-thumbupleft: