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Posted to rec.crafts.metalworking
Bob Engelhardt
 
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Default Painting Metal Doors

wrote:
... oil base dries by oxidation of oils, not by
evaporation unless you use a thinner or extender. Right? ...


Kind of right. Oil paint has a volatile "vehicle", I think they call
it, which does evaporate. But it also has a component which reacts with
oxygen (polymerizes, I think), to "set" (become hard). Bob