Recent content by Howlin Wolf

  1. H

    painting aluminum

    Excerpt from related article: "It is possible to etch aluminum with minimum smut by using a combination of hydrofluoric acid and nitric acid. This will result in a mild etched surface that is usually suitable for powder coatings which will cover the etched surface anyway". How do I etch...
  2. H

    painting aluminum

    "Smut" ~ a common term used in the metal finishing industry. A good article here relative to the topic thread. http://www.finishing.com/3000-3199/3124.shtml
  3. H

    painting aluminum

    Avoid using harsh caustic cleaning compounds as they will attack aluminum and create smut on the surface. Mineral spirits followed with a mild detergent cleaner should suffice. Once the surface is free of grease & oil, deoxidize the aluminum with an aluminum brightener / deoxidizer available...
  4. H

    blasting media

    I've used crushed recycled glass available in two grades, fine & medium grit on sheet metal w/o warping or leaving a rough surface. After blasting, a DA with 220 quickly eliminates any roughness.
  5. H

    paint

    We switched to SW's Polane two component urethane for topcoats several years ago ~ no complaints so far as ease of application or quality. Primer is a high build epoxy furnished through SW's automotive branch and very forgiving when applied over less than perfect fiberglass surfaces.
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