HS-748 2A wrote:
Any good epoxy primer. Even Endura. Don't bother with 'rattle-cans'.
For the extra little expenditure, get yourself a little air compressor and a cheap touch-up gun.
You could be set up like that for less than $300.00.
You will never look back. I can assure you that.
I just about have not 'rattle-canned' anything in over 10 years.
'Two-part mixed' is just always better quality, lasts longer and is better bang-for-your-buck, + you can brush it on as well, where need-be.
If you give it a light scuff with maroon Scotch Brite, and clean it well with 'Wash & Wipe' before you shoot it, it will adhere just fine and last the life of the airplane.
ACF-50 is OK too and is a good thing down in the low points where moisture might collect against a skin-lap.
Time you get done rattle can-ing the plane you could probably buy the compressor/gun that '48 is talking about and the job will be way better.
The family Murphy Elite project is getting done with Dupont Corlar 810R which is a chromate bearing etching primer. You can get it at your local NAPA, recommendation came from Dupont Tech. Rep. office.