Andy Walker wrote:Sounds about right. I used NAPA 7220 self-etching primer on my elevator horn, seemed to work well.
Careful.. you will probably need to apply a "sealer" to that primer for it to provide any corrosion protection. The primer alone dosen't provide much of anything other than a good surface for a sealer or top cote to bond to.
This is off topic for this tread, but i did the whole corrosion protection flip flop for several months and eventually decided not to do anything to the aluminum itself. I strongly believe i will still have a 50 year airframe.