Make sure the item you want to paint is dry. Rust-Oleum calls its brand of rust converter Rust Reformer. A good epoxy primer is better in all aspects with reguard to putting new paint on a vehicle. I did both of mine with Rustoleum "rusty metal primer" - the brown stuff (with whale oil!). Rustoleum's preparation guide recommends removing dirt, grease, oil and chemicals as well as any chipping paint or loose rust. Sanding or simply washing with paint thinners or soapy water is the best way to prepare the surface. Provides more than two times the rust prevention of using lacquers and enamels alone. The stuff will not allow new rust to start ever. According to the company’s product description, Rust Reformer bonds with the rusted metal, changing it chemically which protects it and leaves a paintable surface. However, there is one downside to epoxy primer. It's easy to use and it's easy to top coat. The product is water soluble and odorless. ... galvanized already and I painted with a good coat of Metal paint. Used Gillespie, Sherwin Williams and Aervoe top coats, sprayed and brushed on. Read honest … For smaller jobs I am fond of Rust Tough acrylic enamel, although at $6.00 a rattle can it is a little high. But on Rustoleum's website, they caution against using Rusty Metal Primer on clean metal because it contains "fish oil" which supposedly will float to the surface and cause problems with topcoat adhesion. “You need a primer that will match the surface. Zinsser® Bondz® is specifically made to adhere to heavy and dense surfaces, and it [is effective on] about 90 to 99 percent of all metal substrates.” Putting on a proper coat of primer means that nearly any type of … Epoxy primer can be applied on either new bare or old rusty metal surfaces and is compatible with top coats made up of other substances. Rustoleum says only use latex paint for a top coat. https://www.hunker.com/13412927/how-to-paint-rusty-metal-with-rustoleum I have used it on wood, painted surfaces, rusted surfaces, aluminum yellow chromate primer and even bare metal. An epoxy primer cannot withstand UV ray as good as urethane. If so, does that include rattle-can lacquer primers like PlastiKote's Spot Filler Primer? For maximum protection, top coat with Rust-Oleum finishes ... Rust-Oleum® Rusty Metal Primer provides the best base surface on heavily rusted metal for most brands of automotive lacquers and enamels. My plan was to sand the rusty areas with a 3M wheel and then brush apply Rustoleum Metal Primer and then a topcoat. Once it's clean, prime the item with Rustoleum primer. One was brushed. Well, I found Krylon H2O latex spray but I dunno. For rusty metal, I use Extend a product the uses a little phosphoric acid in the mix to convert the rust to iron phosphate, and also is a good primer. 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