Epoxy primer
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[[Image:54_Dodge_Coronet_in_primer.jpg|right|thumb|350px|A 1954 Dodge Coronet body with a fresh coat of epoxy primer.]] | [[Image:54_Dodge_Coronet_in_primer.jpg|right|thumb|350px|A 1954 Dodge Coronet body with a fresh coat of epoxy primer.]] | ||
| − | Epoxy primer/sealer is a non-porous finish that is typically recommended as the first basecoat over bare steel. Various epoxy primers can also be applied over fiberglass, plastic, or the black iron phosphate coating that remains after "converting" rust. | + | Epoxy primer/sealer is a non-porous finish that is typically recommended as the first basecoat over bare steel. Various epoxy primers can also be applied over fiberglass, plastic, or the black iron phosphate coating that remains after "converting" rust. Care must be taken to observe the epoxy maker's recommendations in preparing the surface over which the epoxy is applied. |
Epoxy primer is a two-part mix, with a hardener that has to be added before spraying. | Epoxy primer is a two-part mix, with a hardener that has to be added before spraying. | ||
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==Spray (rattle) can epoxy primer== | ==Spray (rattle) can epoxy primer== | ||
Because epoxy primer must be mixed prior to spraying, it hasn't conventionally been available in a spray can. However, "aerosol 2-component epoxy primer" has recently been introduced by [http://www.rubber-seal.com Rubber-Seal]. To release the activator into the primer, a plunger is inserted into a stem on the bottom of the spray can. Product literature states a pot life of four days. | Because epoxy primer must be mixed prior to spraying, it hasn't conventionally been available in a spray can. However, "aerosol 2-component epoxy primer" has recently been introduced by [http://www.rubber-seal.com Rubber-Seal]. To release the activator into the primer, a plunger is inserted into a stem on the bottom of the spray can. Product literature states a pot life of four days. | ||
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| + | ==Cautions== | ||
| + | Epoxy primer manufacturers may have very specific recommendations as to how the surface must be prepared, especially in regards to bare metal. Many topcoat failures can be traced all the way back to improper metal preparation, so it is critical to follow the manufacturer's advice regarding surface prep, and to be fully familiarized with proper procedure regarding any prep chemicals to be used, especially acids of any kind. | ||
==Tech sheets of epoxy primers recommended for automotive use== | ==Tech sheets of epoxy primers recommended for automotive use== | ||
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