Raw Aluminum Often found in hardware and building supply stores. Comes in a wide range of types and thicknesses, and may have surface treatments. See Painting on Metal: An Introduction for more detail. At minimum, scuff the surface, degrease with isopropyl alcohol, then use a commercial DTM (Direct to Metal) or Bonding Primer suitable for … Read more

Aluminum Composite Material (Dibond®, E Panel®, Alucobond®, AlumaComp®, etc.) Aluminum composite material (ACM), popular in the sign painting industry, is comprised of two prepared sheets of aluminum with a solid polyethylene core.  It comes in different finishes, with a polyester-based white or clear coating being the most common. Before priming, lightly sand or abrade and degrease … Read more