BARRY-FLYADIVE

Hello Carl & Gaggle: I was doing some searching for primer information and your site came up. After reading the question and the posts it seems like Carl is the GOTO guy. I am not rebuilding a car, I am rebuilding a plane. And I know next to nothing about painting and even less about painting ALUMINUM. So, here are my questions/information: 1 - In the old days, yes, I'm almost as old as dirt. DuPont produced a product know as IMRON, it was the best stuff for planes, but, thanks to the all knowing EPA it is no longer available. Oh, yes the NAME still exists but the chemistry has changed. The plane I'm working on has some of that old paint. GAUD it is still bonding after 40 years. I would like your opinion on whether I should strip it or not... MY FEELING IS NOT! HELL, IT HELD ON FOR 40 YEARS. 2 - If I do not strip I would like to know what primer I could use to do the following: a> Bond to bare Aluminum. b> Bond to the preexisting paint - Note: There is NO topcoat, no wax and the paint has been washed many a time using soap & water with RED SCOTH-BRITE PADS. Also note there is some Bare Aluminum and some MUD CRACKING. c> I would like to use a PRIMER that will ETCH and bond to Bare Aluminum - Painted Aluminum - ABS Plastic - 4140 Steel (Rust-able iron). AND FILL the Mud Cracks. PLEASE NOTE: I am NOT looking for a showroom finish. The plane is going to be painted is a very light gray - 3 shades darker than white with military markings. Lets say I want a 25 Foot paint job. PROTECTION is the goal, with a slight sidestep to LQQK's. 4 - Carl, from your writings I gather there is no such thing as SELF ETCHING EPOXY PRIMER. Well, here are some more of my requests for a primer: a> It should fill the Mud Cracks b> It should be SANDABLE - Yes, I will sand the primer to get the best finish - Or a finish I will be happy with. I was going to use 320 Wet/Dry (WET). I'm only a little lazy but very cheap when it come to 100% stripping. 5 - TOPCOAT - AKA Base Coat - Will be a Urethane. As stated the color will be a light gray, so the Primer should be something that will contrast with the gray. There will be NO top coat. I will be waxing the plane but WEIGHT of the paint is a factor, so the WIGHT of the paint is a factor. OK, that covers about 95% of the basics and my crazy requirements. Can you HELP? Thanks you Carl & Gaggle? BTW - Gaggle is a Formation Flight of different planes. Barry