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Offline Motorman

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« on: March 10, 2019, 11:10:19 PM »
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« Last Edit: September 07, 2021, 12:38:24 PM by Motorman »

Offline Randy Powell

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Re: Primer over Epoxy
« Reply #1 on: March 11, 2019, 03:10:34 PM »
Super Fill makes a catalyzed high build auto primer that will stick to anything. Most catalyzed primers will. It would allow you to use lacquer over it. Be a pain to repair, but it would work fine.
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Offline Serge_Krauss

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Re: Primer over Epoxy
« Reply #2 on: March 11, 2019, 03:35:48 PM »
I've doped over fiberglass/epoxy on two planes. It seemed to work well over sanded surfaces and has not lifted or otherwise come loose from my profile fuselages. BUT on the last stabilizer, my clear Brodak butyrate did bubble up in places after a few days at the field. I think it will stick, if I clean it up some and re-do it. Maybe it's vibration in that part, because the two fuselages are just fine after a couple years.

Offline Skip Chernoff

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Re: Primer over Epoxy
« Reply #3 on: March 11, 2019, 07:39:25 PM »
Rustoleum Automotive Primer works for me.

Offline Paul Wood

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Re: Primer over Epoxy
« Reply #4 on: March 12, 2019, 03:57:06 PM »
Skip, I see three kinds of Rust-Oleum automotive primer, which one do you use?

Self Etching Primer

Sandable Primer

Filler Primer 

Thanks,
Motorman

I'm not trying to answer for Skip, just letting you know what works for me. I use DupliColor primer and they offer the same options as Rustoleum. I use the filler primer because it has more pigment to fill the grain. The sandable primer is basically just a color blocker with little or no build up. The etching primer is to ensure a better bond to the under coat. Again, little build up. These are meant to work on metal surfaces to achieve various outcomes. But for us, I find the filler works best.

Paul   

Offline bill bischoff

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Re: Primer over Epoxy
« Reply #5 on: March 19, 2019, 02:35:17 PM »
The Napa Colorline DC540 primer that everyone knows and loves works fine over epoxy finishing resin and epoxy primer(Klasskote or K&B). On the bare wood, brush on a coat or two of finishing resin cut with denatured alcohol to seal the wood before priming.


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