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Old Feb 22, 2015, 09:25 AM
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Help!
Removing Covering from Clear Canopy Material

Team,

Yesterday morning I took on a new project for the recovering an older 81" CAP 232. The plane is in excellent condition for an older model but the covering is showing wear and the color scheme is very dated. At this point I have the main wings and the canopy.

The canopy is my biggest concern...a portion of it has been covered with the same covering (such as, Monokote, Ultracote, etc.) as the plane. I started to remove some of the covering that was brittle or bubbling up but the areas that are stuck well are going to be a problem.

There would be no problem sanding with fine sand paper but that will be time consuming. The clear portion of the canopy is in great shape so I need to be careful of any solvents I use for fear of damaging the area that is intended to be that way.

Any ideas?

RCMC
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Old Feb 22, 2015, 10:29 AM
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I have successfully used WD40 to remove glue residue from plastic in the past.
Might be worth a try here.

Good Luck,
KW_Counter
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Old Feb 22, 2015, 11:13 AM
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kw counter,

Thanks for the tip, I'll give that a try. I did forget to mention that the canopy is to be painted where the teal covering is now.

RCMC
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Old Feb 22, 2015, 11:42 AM
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You could also mask off the clear areas and then go at the covering with a fairly coarse grit sandpaper (say 120), that would make fast work of the covering material. Then go back with fine grit to prep for painting.
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Old Feb 22, 2015, 05:22 PM
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aymodeler,

I was planning to mask off the area just above the gold stripe so that I wouldn't damage the clear section of the canopy during the removal process.

Do you think the existing covering can be heated with a warm iron so that it doesn't distort the canopy material? I know that that material doesn't take a lot of heat to deform it.

RCMC
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Old Feb 23, 2015, 07:36 PM
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Quote:
Originally Posted by RCMC View Post
aymodeler,

I was planning to mask off the area just above the gold stripe so that I wouldn't damage the clear section of the canopy during the removal process.

Do you think the existing covering can be heated with a warm iron so that it doesn't distort the canopy material? I know that that material doesn't take a lot of heat to deform it.

RCMC
I tried something like that once and ended up wrecking the plastic ... I still think sanding off the old covering will be the fastest and safest way. It should only take about 5-10 minutes ...
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Old Feb 24, 2015, 03:28 AM
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aymodeler,

I tried sanding last night and I believe that is the way to go but this covering is a bear. It has turned very brittle and is stuck to the canopy almost like paint. I have a long way to go.

RCMC
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Old Feb 24, 2015, 06:14 PM
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Have you tried a warm iron?
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Old Feb 25, 2015, 03:23 AM
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Quote:
Originally Posted by Captain Dunsel View Post
Have you tried a warm iron?
No, any suggestions on how to do that?

RCMC
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Old Feb 25, 2015, 05:36 AM
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You could also try a soft (brass) wire brush wheel on a Dremel. Go real easy though or you will gouge the plastic.
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Old Mar 03, 2015, 08:27 PM
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I know that you can remove covering from sheet balsa by applying clear packing tape over it and pulling it up. It helps to release the glue. It may be worth a try and definitely won't mess with the clear portions of the canopy.
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Old Apr 22, 2015, 12:27 PM
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I've had good luck using Goo-Gone for this type of thing. It's citrus / acid
based, and also works when alcohol or more aggressive liquids fail to
remove glue residue from stickers etc. Need to get the full strength kind
that comes in the small bottles, not the diluted stuff that comes in spray
bottles. Apply liberally and let it penetrate. Hope this helps.

Smokin Joe
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