I am trying to establish the formula for the original paints used in the 1930’s I believe that the Ford Motor company demanded a fast drying paint to speed up the production of cars in the 1920’s and DuPont came up with the formula for Nitro Cellulose paint which dried in hours not days. This formula was used for a number of years despite the fumes being flammable and poisonous. I understand it was outlawed in USA in the fifties, the only reference I can find on the net relates to paint for guitars, for which Nitro Cellulose paint (and varnishes) is still available and legal (for furniture polishing) I am sure there are members that are far more knowledgable on this subject but I can’t find any earlier posts, probably because I haven’t searched properly
Malcolm I can confirm that Nitro Cellulose is still used in the UK for guitar refinishing. I was using it for this purpose up until the early 70s and friends tell me they are still, needs a lot of care in application though, nasty stuff. Terry