I am presently in the early phase of a build. The underside of the glass body has a texture of shiny but uneven glass in places and in others, small fibers of glass protruding from the finish. I would like to give the underside some sort of finished look. The question is "What to use and how to prep it so that something will stick?". When I restored vintage Bugs, I painted the bodies off the pan, so that the fenderwells are painted body color. The problem with the Speedie is that the glass body sits in the steel frame, so it can't be separated for painting. I thought about unsing single stage enamel matching the body color, but it may be too brittle for underside exposure to the gravel road upon which I reside (about a half mile from pavement). The soft undercoat is most durable but doesn't dry well and would be, of course, Henry Ford's traditional black. Even the undercoat should be applied to a finish that it can adhere upon and I suspect that the smooth and shiny glass would need some sort of prep.
I have some ideas, but would appreciate any advise (although I don't deal with criticism well.)
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