Now that I've done all I can do with the flaps for now, I felt motivated to move back onto the wing structure. I needed to prime the wing skins. I gave the skins a quick wipe with MEK and began to scuff the surfaces with maroon scotch brite. Then I sprayed Alumabrite 215 acid etch on the surfaces needing priming. I wiped the surfaces clean, and rescuffed with a clean scotch brite pad, and re wiped with MEK. Fortunately it was a really nice day so I could prime outside.
Most important is that I didn't want to prime the mating surface between the wing walk doubler and the wing skin as I intend to apply a thin layer of proseal to the surface. So I cleco'd those to pieces together before I primed to ensure that those surfaces did not get primed.
