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Dried Epoxy on Ultracote? - 12/7/2012 11:13 PM   
BillinIndiana


 

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Status: offline 		 What can I use to remove dried two-part epoxy from Ultracote without scratching it up or ruining it? 

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RE: Dried Epoxy on Ultracote? - 12/7/2012 11:31 PM   
GaryHarris



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RE: Dried Epoxy on Ultracote? - 12/8/2012 12:22 AM   
Gray Beard


 

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RE: Dried Epoxy on Ultracote? - 12/8/2012 12:58 AM   
bikerbc


 

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Status: online 		If you can loosen the covering and twist it around a bit the epoxy just mite crack loose and let go but I think you will be left with some marks..Mite not be too bad depending on the colour......Other than that you are stuck... Good luck

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RE: Dried Epoxy on Ultracote? - 12/8/2012 1:14 AM   
acerc



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Status: offline 		you are stuck... Good luck

That's funny right there.


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RE: Dried Epoxy on Ultracote? - 12/8/2012 1:24 AM   
speedracerntrixie


 

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Status: online 		Carefully warm up the epoxy with a heat gun and it will soften. Obviously don't use enough heat to damage the covering.


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RE: Dried Epoxy on Ultracote? - 12/8/2012 4:22 AM   
BillinIndiana


 

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Status: offline 		 Thanks... I'll just leave it alone. It's only a small area on the bottom, plus it's just a trainer.. I was just curious if there was something that would make it dissolve enough to wipe off. It's not worth recovering the bottom for..

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RE: Dried Epoxy on Ultracote? - 12/8/2012 5:09 AM   
52larry52


 

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Status: offline 		Bill, I've had some success by putting a couple of drops of CA de-bonder on the Epoxy wetting the outside edge of the "glob" and then carefully picking at the Epoxy with a hobby knife. Alcohol used the same way also sometimes works to get it loose from the covering but as the other guys have correctly said, nothing will actually dissolve it. "Pick" with care and if you get the major part of the "glob" off then wipe the residue with a paper towel wet with the de-bonder or alcohol. Good luck!!!

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RE: Dried Epoxy on Ultracote? - 12/8/2012 6:03 AM   
jester_s1


 

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Status: offline 		You may get it off by very carefully scraping it with a razor blade or hobby knife. If you can thinly slice it off you should get by with only minor wood denting and no covering damage.

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RE: Dried Epoxy on Ultracote? - 12/8/2012 6:19 AM   
mooseflier


 

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Status: offline 		I admit I haven't covered a wind in about 3 years, but I thought alcohol or laquer thinner takes that out without messing with the monokote. Or is ultracote different?


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RE: Dried Epoxy on Ultracote? - 12/8/2012 7:02 AM   
nitro wing


 

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Status: offline 		epoxy wont soften or disolve again, usually its brittle enough over time that it will pick off the covering in a clean manner, with a blade or pick, usually ends up in your eyes, so be aware.

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RE: Dried Epoxy on Ultracote? - 12/8/2012 8:16 AM   
GaryHarris



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Status: offline 		I wouldn't mess with it. Trying to get rid of it might just make it look worse.

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RE: Dried Epoxy on Ultracote? - 12/8/2012 9:31 AM   
jaka


 

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It's easy!
Use a warm airgun!

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RE: Dried Epoxy on Ultracote? - 12/8/2012 11:51 AM   
pmerritt


 

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quote:

ORIGINAL: speedracerntrixie

Carefully warm up the epoxy with a heat gun and it will soften. Obviously don't use enough heat to damage the covering.



If you think you can heat up epoxy at a lesser temperature than it would take to destroy the covering, you might need to step away from the CA.


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RE: Dried Epoxy on Ultracote? - 12/8/2012 1:01 PM   
Steve Steinbring


 

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Status: offline 		Epoxy starts to breakdown around 325 degrees F. and is chemical resistant so acetone, alcohol, and other common solvents are not very effective once epoxy has cured. Methalene Chloride (used in strong paint strippers) will break it down, but the cure is probably worst than the problem.

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RE: Dried Epoxy on Ultracote? - 12/8/2012 1:14 PM   
da Rock



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Status: offline 		Honest, replacing covering is dead simple and quick. And it's almost impossible to tell that it's been done unless you get up close enough to see the overlap. And you've got to know to look for it.

I often cut the covering out of open areas when assembling ARFs in order to brace pushrods in the fuselage and such. When done, ironing matching covering over the hole takes a couple of minutes tops. It's like having a semi-permanent hatch there. And I've had to point them out to people who seem baffled when I tell them about doing it.

Funny thing is the response is almost guaranteed. Almost everyone says something like, "that seems like an awful lot of work". It isn't even close to being work, and no effort at all. In fact, it makes some jobs possible and all of them a lot easier.

Heat the epoxy and see if it comes loose. If it doesn't, then trim the covering around it and it ought to be easy to lift since it'll be warm. Warmed covering is easier to remove.

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RE: Dried Epoxy on Ultracote? - 12/8/2012 1:22 PM   
jaka


 

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All epoxy glues will become loose and brittle with heat and then you pry the epoxy away with a sharp nr 11 X-axto knife.


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RE: Dried Epoxy on Ultracote? - 12/8/2012 5:18 PM   
Brian Smith


 

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Status: offline 		I took some very ugly dried CA off my model with acetone. IT was old and dry. Had to work at it slowly andf let the acetone work in. I was amazed...Never tried epoxy. Just sayin/ Brian

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RE: Dried Epoxy on Ultracote? - 12/8/2012 5:36 PM   
toolmaker7341


 

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Status: online 		use a heat gun or a sealing iron (easyest to control) to soften the epoxy then wipe off with a tissue. This requires several tries and when you get most of it off heat again and wipe the rest off with a tissue soaked with laquar thinner.
PS I don't use CA,sniff glue or drink. Hobby epoxy starts to soften at about 200 deg F Just ask my wife about when she went into a sauna with glasses I had epoxed together. They fell off her face after about 5 minutes.

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RE: Dried Epoxy on Ultracote? - 12/8/2012 6:04 PM   
straitnickel


 

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Status: offline 		Alcohol, if you get to it before it sets up. After it sets, I've removed some really thin smudge marks and that's about it

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RE: Dried Epoxy on Ultracote? - 12/8/2012 6:58 PM   
Gray Beard


 

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Status: offline 		It just hit me, I just used a mixing cup that I was using to mix up epoxy in and I used it to hold a bit of lacquer thinner and the epoxy did soften up and peel out. Just a thought, I have never tried to use it to remove epoxy from covering before but it may be worth a try? I do use my heat gun to remove wood parts from places but the parts really require a lot of heat to melt/soften the epoxy. Heat is your friend but on covering? Not so much. I have tried Acetone without much luck but the lacquer does remove it, I just don't know how much soaking it would take. If it isn't bad I would just leave it alone. I hate having a new plane with a patch job, done it before but didn't like it.

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RE: Dried Epoxy on Ultracote? - 12/8/2012 8:15 PM   
rv9-a


 

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RE: Dried Epoxy on Ultracote? - 12/9/2012 12:07 AM   
speedracerntrixie


 

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quote:

ORIGINAL: pmerritt


quote:

ORIGINAL: speedracerntrixie

Carefully warm up the epoxy with a heat gun and it will soften. Obviously don't use enough heat to damage the covering.



If you think you can heat up epoxy at a lesser temperature than it would take to destroy the covering, you might need to step away from the CA.




Just about all ambient cured hobby epoxies will soften at or a little above 150 degrees. At work where I make composite components for military aircraft we use heat all the time to clean up unwanted epoxy. Maybe some reserch was in order before sending the red reply   lol



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RE: Dried Epoxy on Ultracote? - 12/19/2012 1:13 AM   
JPMacG


 

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Status: offline 		I recently spent several hours trying to remove epoxy from Monokote - and was unsuccessful.

I tried a heat gun, and yes it softens the epoxy - which makes it even harder to pick off. I actually wonder if I should try freezing the area with cold spray. Maybe that would make the epoxy brittle and easier to pick off the covering. Maybe heating and cooling several times would help break the bond.

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RE: Dried Epoxy on Ultracote? - 12/19/2012 1:17 AM   
speedracerntrixie


 

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Status: online 		If it gets soft you may want to try some acetone while it is soft. May take a few attempts but I think it will work.


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