I have used lime and acetone but found the acetone, which is very volatile, evaporated far too quickly to enable the slurry to work. It might help to keep the slurry and the panels in a small sealed container, but I did not have much success in my attempts. 1,1,1 TCE might be a good alternative so I appreciate that suggestion. I no longer use caustic solutions like Easy Off (NaOH) makes because I had a pair of panels that became soft. I am also wary of such a caustic substance in contact with metal.quote:Originally posted by Heinrich
George,
We have good experience with oven cleaner.
May be that there is a similar product on the US market.