JAL Computing

Priming Parts

According to the RV-12 plans "all aluminum bar, angle and tube used in the RV-12 is not alclad and must be primed to assure corrosion resistance." Honestly, I can find very few parts in the wing kit that meet these criteria. None-the-less, I primed these few parts using  Sherwin Williams Wash Primer #P60G2/ Catalyst Reducer #R7K44. I used a charcoal "respirator" and a High Volume Low Pressure (HVLP) spray gun to reduce the over spray. I prepped the parts with ScotchBrite pads and lacquer thinner. I primed many of the smaller parts using a rattle can of "self etching primer" available at most auto parts stores. This greatly simplifies prep and clean up.

This is my over spray booth that catches over spray, but the painter stays outside of the booth. Remember, this is not a painting booth, it is a very big spray box. The painter should not go inside the booth to paint since the booth is not ventilated. Note the inline water trap mounted on the door and the inline yellow desecrator mounted to the spray gun. Parts to be sprayed can be placed in wire baskets and the baskets slid onto notches on the door for drying.

After painting, I sprayed lacquer thinner through the gun. You can remove the nose piece and place it inside the paint reservoir.