DupliColor Self Etching Primer

[818 AV8R]

How does anyone feel about the duplicolor self etching primer?

[Flyguytki]

Use the search function, this has been discussed many many times in the past, You will get much more information than you thought possible.

-David

[RV7AJeremy]

I use it, I love it. I have almost all the wing structure primed and it has all been with the DP self etching primer. I think it works great. IMHO.

[Rupester]

I've used thier self-etching primer throughout my build ... probably gone thru 7 or 8 cans of it. It is the best primer I have used, bar none. That includes zinc chromate products, SEM Hi-build, and Sherwin-Williams best automotive stuff. Just make sure you use the Duplicolor self-etching primer ...that's the product that really works well with aluminum.
Better yet, whenever I needed another can, I could drive over to Advance Auto Parts and buy it for under $6, rather than mail order the specialty stuff.

[n567vb]

Walmart carries it for under $5

[krw5927]

The WM stores in my area only carry Rustoleum self etching primer. It's sure cheap but has proven to be just awful stuff. Looks horrible and doesn't stay on parts very well at all.

Duplicolor, Sherwin Williams 988, and Napa 7220 (same as SW988) have all worked well for me.

[longranger]

Originally Posted by n567vb

Walmart carries it for under $5

Wow! I may have drive off the mountain and find a Walmart! Yesterday I felt like I was getting to the point on my empennage that I'm going to have to make a primer decision. I found out last week that I can no longer get my tried and true Variprime here, so I went to our local NAPA store yesterday to pick up a couple cans of 7220 just to get started, and all they carry is the Duplicolor. But... it was $9.49 - over $10/can out the door!, so I just bought one can for a trial run. They can order the 7220, but it's about $0.50 MORE per can. The price difference wouldn't sway me but if the Duplicolor works as well, and it's available off the shelf, that's the way I may go.

[jdeas]

Originally Posted by krw5927

The WM stores in my area only carry Rustoleum self etching primer. It's sure cheap but has proven to be just awful stuff. Looks horrible and doesn't stay on parts very well at all.

Duplicolor, Sherwin Williams 988, and Napa 7220 (same as SW988) have all worked well for me.

In rattle can, the Napa 7220 has worked best for me.

[818 AV8R]

I think i am pretty happy with the duplicolor self etching as well. it seems to be quite readily available, fair priced, sturdy, quick drying, and good corrosion protection as well.

Although it may be tempting to prime everything in sight, i dont think the cost and added weight are worthwhile. There are airplanes 50 years old still flying with no primer and little to no corrosion depending on environment. Of course there are the examples that are not doing well and everything in between depending on the variables.

I plan to always hangar my aircraft and avoid any longterm exposure to corrosive environments. I will prime anywhere two surfaces are mated and of course any aluminum that is not alclad.

[SilverEagle2]

I too have had success with the DupliColor SE. I like the color too!

I have a 1974 spam can that I own with no primer and with no corrosion. However, Cessna is shipping new C182s with the internals primed...so!?!?!?

For me, near the Great Salt Lake, I am priming. Good luck with your build.