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Monokote over Epoxy?

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Old 03-31-2014, 06:08 AM
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N1EDM
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Default Monokote over Epoxy?

I'm not sure if this fits into this forum but thought that I'd ask....

I'm working on a new project and while fuel-proofing the engine and tank area, I also added epoxy resin to the outside of the nose, which will be under the Monokote covering.

Question: Did I just shoot myself in the foot? Will the Monokote bond to the epoxy successfully? If not, is there something (nitrate dope, Balsarite?) that I can use as a 'primer' for the film?

Thanks,

Bob
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Old 03-31-2014, 06:45 AM
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I usually do it the other way. Cover with monokote, sand the last 1/8" of covering, and epoxy over the covering edge. That being said, Balsarite is supposed to promote bond between epoxy and covering. I have yet to try it, but it should work.
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Old 03-31-2014, 07:22 AM
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Thanks, Pylon. I hadn't heard that one My problem is that I've already applied the epoxy, so I now have to deal with that. I hope that my Balsarite is not old...

Bob
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Old 03-31-2014, 07:16 PM
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Monokote will stick to epoxy but it is not pretty, just ask anyone who covers over the fiberglassed center section of a wing. Nothing too ugly though - the Monokote highlights the irregularities of the epoxy. It is very similar to covering plywood - you can see all of your iron indentations. I cover epoxy painted firewalls all the time along with fiberglass/epoxy over balsa fuselages (nose to tail Q500 fuselages).

Kurt
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Old 04-01-2014, 05:20 AM
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Thanks, Kurt,

I thinned the epoxy before it was put on, then spread it out with an old business card to remove the excess. The plane is only a utility plane so the film doesn't have to be perfect, just 'pretty good'.

Thanks for chiming in,

Bob
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Old 04-01-2014, 10:56 AM
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if your balsarite is thickened just use mek or acetone to rethin to very thin consistency ...sanding epoxy to remove gloss and level....use very low temp on iron
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Old 04-01-2014, 03:53 PM
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Thanks for the heads-up. I wonder if a Woodpecker would be of any use in a situation like this??

Bob
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Old 04-01-2014, 07:24 PM
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Noooooo! - please no Woodpeckers - ever. You can see their destruction underneath and there is absolutely no need for them. For the sake of humanity!!!! Put down the woodpecker and just walk away.

Kurt
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Old 04-02-2014, 05:11 AM
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Hi Kurt,

Hmmmmmmm, I see you feel very strongly about this :-) My thinking was that it would perforate the epoxy layer just enough to allow the heat to bleed into the wood and not create bubbles...

Going to get out to do a little flying in a few minutes,

Bob
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