In the 1920’s auto manufacturers had a problem. The only practical laquer or enamel that was usable was black in what was called the Japanning process. While varnishes in other colors were available the long application times and drying times precluded using them in mass production. In fact even the use of black was creating a production bottleneck for Ford.
Customers, though wanted more color in cars. Attempts though to use colors from woodworking and other uses just didn’t last. One customer complained that the finish peeled off in 90 days. That was a real problem when a brush painted finish could take longer than that to apply when drying time and sanding between coats is considered.
The problem is that unlike furniture which is not exposed to sunlight and weather or a railroad car which was essentially only painted on the car sides, an automobile is left out in the weather for long periods…
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