Final dimpling and primer prep

Spent today finishing the dimpling of the ribs and spars, countersinking the spar doubler and doing final prep on all parts for priming. The spar doubler in particular took a lot of time to remove marks along the edges and inside the lightning holes that Vans tooling had left. I also tested the spray SEM primer on half my practice airfoil. After thoroughly scuffed the piece with maroon scotchbrite I then cleaned it with mineral spirits and then isopropyl alcohol while wearing latex gloves to both protect my hands and keep body oils off the metal. Gave it 3 light coats of primer using the heat gun in between to quickly dry each coat. I was pleased with the coverage and final appearance of the airfoil and will use that technique on the stab parts. I plan to prime the interior skins along the rivet lines only using a 1" foam brush in an effort to save weight. I created a test piece of alclad that was half scuffed and half alclad cleaned as indicated above. The primer retained in the foam brush went a long way, a little primer covered a lot of metal. The primer seemed to stick fine to the unscuffed cleaned alclad surface. I'd prefer not to scuff the interior skin alclad to retain its corrosion inhibiting properties and prime only along the fay surfaces where metal meets metal. From what I've seen in my test piece I'm going to move forward with that plan, putting primer directly over cleaned alclad surfaces when able, scuffing only to remove surface scratches. I also bought a respirator to protect myself from the paint fumes and will also wear latex gloves to keep it off my skin.