Amsterdam bridge drawing sheet
Looking for some opinions from guys who have long term experience with the results of painting over mill scale. Obviously anything loose has to go for a good job, but what about scale that a 40 grit flap wheel just polishes shiny, unless you lean on the grinder, or use the edge of the wheel? Aluminum surfaces need special preparation before painting. This differs from most surfaces in that aluminum must be etched. Etching is a technique that involves coating the metal with an acid, which causes a chemical reaction that in turn produces a slight engraving. This helps paint adhere to the aluminum surface. This Everbilt Plain Steel Sheet Metal can be altered in shape and cut with proper equipment. Comes with steel construction. Everbilt 6 in. x 18 in. 16-Gauge Plain Steel Sheet Metal-801467 - The Home Depot Metal Surfaces cleaned with Cleaner Degreaser should always then be treated with POR-15 Metal Prep before painting. Caution Cleaner Degreaser may stain alloy surfaces.