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August 14, 2020, 01:48:12 PM *
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Author Topic: OK TO USE ENAMEL PAINT OVER DOPED TISSUE ?  (Read 306 times)
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« on: January 02, 2020, 08:52:58 AM »

I would like to spray some enamel color over a doped tissue finish.

Before I ruin a perfectly good doped finish Smiley, does anyone know whether the enamel will adversely interact with the dope?

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« Reply #1 on: January 02, 2020, 09:30:03 AM »

No, it'll be fine. The only time it can go wrong is if you are using cellulose thinners to thin the enamel. I do it all the time as it speeds things up but if you overdo the subsequent coats, esp. in cold weather, the low evaporation rate can react with the dry enamel below. Just don't rush it.
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« Reply #2 on: January 02, 2020, 02:52:57 PM »

I spray water based enamels on nitrate dope with no problems. I finish with a light top coat of Krylon clear afterwards. In my experience thick coats of enamel tend to pool up on doped tissue so you want to go slowly, with thin coats. Good luck.

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« Reply #3 on: January 02, 2020, 03:02:04 PM »

I've had good luck with multiple, very thin coats of acrylic applied with an airbrush. Any single coat is just barely there. I admit I only tried it once, but the results were excellent. Only use enough to look more or less opaque from several feet away. At least if it's a rubber powered plane and you care about weight.

I've also heard of various concoctions prepared from Floquil and eye of newt, but it's been a while and I don't remember much. I guess Floquil has fine pigments.
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« Reply #4 on: January 14, 2020, 08:01:50 AM »

If it is nitrate dope then it's perfectly safe to put enamel on it. Generally nitrate paint/dope is a good and safe base for almost any kind of paint.
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