If you would like to paint bare wood with Rustoleum oil-based paint, you will need to consider a pair of factors before you begin. First, because bare wood is unsuitable for paint adhesion, you must apply a primer to condition the wood to accept paint. In addition, since you plan to use an oil-based paint, you must choose a specific type of primer formulated to bond to oil-based coatings, or the finish will peel and flake over time.
Wipe away sawdust and dirt from the raw wood using a tack cloth.
Apply a coat of Rustoleum oil-based primer using a paintbrush manufactured for oil-based paints. Allow the primer to dry for three hours.
Wash the paintbrush with mineral spirits.
Apply a coat of Rustoleum oil-based paint to the primed wood using the cleaned paintbrush. Allow the wood to dry for two hours, and then apply an additional coat if you can see the primer showing through.