Editing 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.]] | ||
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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 [[Fiberglassing|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/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 [[Fiberglassing|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. | ||
Real epoxy primer is a two-part mix, with a hardener that has to be added before spraying. The common epoxy paint you buy at the local hardware store in an aerosol can is not considered a true epoxy primer. | Real epoxy primer is a two-part mix, with a hardener that has to be added before spraying. The common epoxy paint you buy at the local hardware store in an aerosol can is not considered a true epoxy primer. | ||
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==Body filler and epoxy primer== | ==Body filler and epoxy primer== | ||
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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 | + | 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. |
==Cautions== | ==Cautions== | ||
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===Temperature=== | ===Temperature=== | ||
− | The temperature of the air and of the metal '''must''' be taken into account -- it must be high enough for the epoxy primer to properly cure | + | The temperature of the air and of the metal '''must''' be taken into account -- it must be high enough for the epoxy primer to properly cure. If the temperature drops below proper temp before it is fully cured, the paint will be bad as the chemical reaction does not continue when the temp rises again. |
===Acids=== | ===Acids=== | ||
− | Some epoxies do not cure properly if put over an acid surface. If you use an acid you must be sure all the acid is neutralized before you paint. | + | Some epoxies do not cure properly if put over an acid surface. If you use an acid you must be sure all the acid is neutralized before you paint. The acid will prevent the epoxy from properly curing. |
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==Tech sheets of epoxy primers recommended for automotive use== | ==Tech sheets of epoxy primers recommended for automotive use== | ||
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===DuPont=== | ===DuPont=== | ||
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===Southern Polyurethanes=== | ===Southern Polyurethanes=== | ||
*[http://southernpolyurethanes.com/Tech%20Sheets/Epoxy%20Primer.htm Southern Polyurethanes Epoxy Primer] | *[http://southernpolyurethanes.com/Tech%20Sheets/Epoxy%20Primer.htm Southern Polyurethanes Epoxy Primer] | ||
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===Valspar=== | ===Valspar=== |