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Hi Carl, Judging from the totality of your post I would recommend you consider a brush application of a standard, slow dry, synthetic enamel w/o hardener - typical of what you would find in the tractor stores or tractor dealerships. You should be able to get the correct colors in that type of paint even through this site - check out the "tractor parts" section. The automotive paints are formulated as relatively fast dry materials intended for spray application. I believe that would include the NASON product you mention. I have never tried to brush-apply an automotive paint on anything other than very small parts so I am not positive, but I would be concerned about the ability to keep a decent wet edge on large parts such as a tractor hood. If you have ever brush-applied Sherwin Williams "Duration" paint to house siding in hot weather (even in the shade), you know what I mean. The stuff is great paint and dries fast (really too fast) but should be applied by airless spray equipment for anything other than small areas. Since you lack spray equipment you most likely also lack the fresh air respiratory system needed to deal with isocyanates in paint hardeners. That's a personal safety matter that you will have to decide for yourself. Since I wouldn't use hardeners (even general brush application) myself w/o the fresh air equipment, I do not recommend it to others. I certainly appreciate your situation with trying to paint a working tractor that you don't want to take out of service for long periods. My '42 AC-B is like that. It's one reason why I probably will never completely finish it. In any event, I have been able to do most of the sheetmetal work a piece at a time - that's the most important. The cast work is mostly cosmetic and it will easily last another 60+ years just fine, even with no paint :o).  Rod (in Farmington)
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