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Building Tips and technical articles. => Paint and finishing => Topic started by: Tim Wescott on May 15, 2023, 02:23:47 PM
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So, I put some dents into my nice doped wing. The picture makes them look better than they really are. This is silkspan over an open bay, painted with Sig & Certified butyrate dope, bottom to top.
Is there a way to take the dents out?
(https://stunthanger.com/smf/scale-models/ercoupe-build-(slow)/?action=dlattach;attach=343224;image)
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My finishes are not anything to write home about, or anywhere else for that matter, but I have "sort of" removed some dings by injecting a very small amount of water under the ding then using a monokote iron to heat it. Got the idea from removing benchmarks in raw balsa before covering. Dings in polyspan respond to heat as well, as does MonoKote. Plan "B" is a well-placed decal over the Boo Boo.
Ken
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My finishes are not anything to write home about, or anywhere else for that matter, but I have "sort of" removed some dings by injecting a very small amount of water under the ding then using a monokote iron to heat it. Got the idea from removing benchmarks in raw balsa before covering. Dings in polyspan respond to heat as well, as does MonoKote. Plan "B" is a well-placed decal over the Boo Boo.
Ken
There is no "under" under the ding -- it's over an open bay.
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There is no "under" under the ding -- it's over an open bay.
Plan "B"
Ken
I have racked my brain for another solution that does not end up looking worse than the ding. I assume you have tried damp heat. Maybe some tauting clear in the dent to soften it up followed by a blast from a MonoKote gun. Too bad it is not pollyspan. Anyway, Top - Put a little "No Step" sticker over it. Bottom - ignore it.
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Plan "B"
Ken
I have racked my brain for another solution that does not end up looking worse than the ding. I assume you have tried damp heat. Maybe some tauting clear in the dent to soften it up followed by a blast from a MonoKote gun. Too bad it is not pollyspan. Anyway, Top - Put a little "No Step" sticker over it. Bottom - ignore it.
Moist heat was the first thing I was going to try without feedback.
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If I were you I would fill up an airbrush with 60/40 thinner/clear dope and fill the dents with clear, let dry, sand and then polish.
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So, I put some dents into my nice doped wing. The picture makes them look better than they really are. This is silkspan over an open bay, painted with Sig & Certified butyrate dope, bottom to top.
Is there a way to take the dents out?
(https://stunthanger.com/smf/scale-models/ercoupe-build-(slow)/?action=dlattach;attach=343224;image)
Tim - Overall where is this. The picture leads you to believe it is at the flap joint on the outboard bottom. And, a little off subject, what is the screw for. I am always fascinated by innovative ways to adjust flaps.
Ken
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Tim - Overall where is this. The picture leads you to believe it is at the flap joint on the outboard bottom. And, a little off subject, what is the screw for. I am always fascinated by innovative ways to adjust flaps.
Ken
That's a radio hatch on a scale plane whose throttle is run with a 2.4GHz radio.
(https://stunthanger.com/smf/scale-models/ercoupe-build-(slow)/?action=dlattach;attach=300331;image)
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I have one in the side of my current build where my son picked it up over an open bay. I've decided to live with it or put a sticker over it. Whenever I try to fix a minor problem, I almost always create a major problem.
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Whenever I try to fix a minor problem, I almost always create a major problem.
Words that should be on a plaque over every workbench! y1
Ken
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Very late reply...just brush or blow on a coat of clear dope-will shrink right up.
Dave
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I looked the other day and the one I had on the fuselage of my plane finally just pulled itself smooth. Nature can fix almost anything better than I can.
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Dope shrinks until it's too brittle to do anything but crumble-sometime that's for years. A little heat application, perhaps just setting the airplane in the sun or a hot car for a few hours will pull out many dents and wrinkles. When it becomes too dry to shrink much an application of a little fresh dope will reinvigorate the old dope some and make it shrink more. You can also give new life to old covering the same way. A coat of well-retarded and thinned clear will soften the finish and give it another life in most cases.
Dave
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I’d try in order:
1. A brief touch with a Mono Kote iron
2. A dab of tautening dope
3. A glob or two of dope with zinc srearate
4. Spot putty