Anyone know if there is any special prep needed to paint an aluminum sheetmetal wing so it lasts and doesn't chip/peel off?
Zinc works great but I could not get it. What I used on alum is self etching primer, then a sealer primer then paint. This was from a auto paint store.I use to use zinc chromate primer when I painted aluminium car parts and boats. Not sure if it is still available but it sure worked well.