Now that Naphtha is extremely difficult to find in California, what's everybody using to wipe down kit parts before applying self-etching primer? Isopropyl alcohol? Lacquer thinner? Dawn dishwashing soap and water?
Thanks,
Thanks,
Acetone. It's already handy for removing the lettering on the aluminum.
After cleaning with mineral spirits or acetone to remove adhesive residue and oil I scuff with a maroon Scotchbrite pad, wipe down with thinner (or acetone if it's handier), shoot SEM primer (or Stewart Systems Eko-Prime if it's a large batch of parts). Zero problems. A solvent wipe will leave zero residue or deposits... soap & water, maybe or maybe not.So far, what has worked the best for me is a very long process of scuffing, acetone, then dawn soap/water, rinse with tap water, then rinse with distilled water.
That process was taking forever and so the last batch I sprayed, I skipped the acetone step but kept everything else the same. The batch didn't come out too well. I had several areas of primer "lifting".