It's not "corrosive." It's because the solvents used in most paints are not at all friendly to the (usually) polycarbonate plastic the shells are made of. I've seen other applications (not specifically helmets) where the wrong paint made a plastic part astonishingly weak and brittle after a few weeks. I wouldn't do it unless you'll consider it a "novelty" helmet after you've painted it.rickbb said:I cannot imagine that any commercial paint you'd buy in a retail store would so crrosive that it would eat away the very hard and mostly indestructiable shell.
That is not regular enamel or lacquer paint though.rickbb said:If you take an old helmet and sand away at it, you will find that the color on it when you bought it, is paint. The factory color is not normally part of the molded shell.
My guess would be a polyester resin. Very transparent, relatively cheap, and able to be sprayed into the mold to eliminate prep work of the shell(making it even cheaper yet). If that's what it is, it should take almost any paint very nicely, but lacquer may attack it.dirty d said:i have ran into some of their cleared helmets that i absolutely could not tell what kind of material it was. it didn`t act like lacquer and it didn`t act like a urethane.