AX-O
Well Known Member
Yesterday I had my first visit from an EAA technical advisor. He checked my Horizontal and vertical stab work. He said that the workmanship was much higher that he expected. And that made me extremely happy however, he made a comment that has me puzzled. He said that the primmer that I am using (NAPA 7220 self etching) or any other primmer not 2 step epoxy are not water resistant and would cause more harm that good if water got inside the parts. He also said that primmer is not used to prevent corrosion but to provide a good surface so paint can adhere. He said I would be better off not using primer at all, that aircraft mechanic (he is one) prefer to sign off aircraft that don?t have primmer inside because it is easier to check for corrosion and primmer hides it too well. Is all this coming from him or is this true amongst the aircraft community? If so, why the unresolved never ending discussions about primers on these forums? Hope this is not one of them.