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  #1  
Old 12-11-2018, 06:53 PM
Zazoos Zazoos is offline
 
Join Date: Oct 2017
Location: Gladewater
Posts: 141
Default Removing really old sheet metal protective film

So my wings were built in the 90's and the sheet metal was wrapped with some white film. I am struggling with removing some of it. I have tried MEK, Acetone, Brake Clean, Goo Gone, Kerosene, Shopline JT501, and Aircraft Paint Remover. Nothing touches this stuff. I even took a 3m Scotch Brite Pad to remove the white backing to expose the adhesive layer and the solvents still will not remove it.

I can Scotch Brite it all the way but would prefer a chemical method.

Suggestions?



Thank you,
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  #2  
Old 12-11-2018, 06:55 PM
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Mike S Mike S is offline
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Have you tried heat?
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  #3  
Old 12-11-2018, 06:58 PM
n721dp n721dp is offline
 
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I had the same problem with the spars on my -6A.
Aircraft paint remover took it right off.
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  #4  
Old 12-11-2018, 07:43 PM
Zazoos Zazoos is offline
 
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Yes, I have tried heating with a heat gun to approx 180 degrees.

I let Aircraft paint remover sit on it for 30 minutes. Wiped right off without phasing the adhesive film.
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  #5  
Old 12-11-2018, 07:55 PM
Muuvie Muuvie is offline
 
Join Date: Dec 2018
Location: Richlands, NC
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Not a RV builder (yet,) but am A&P. I use Speedy 500 on breaking up adhesives, it's like a more robust Goo-Gone. Yours may have aged to the point where it's more resistant to chemicals, but I'd bet if you soaked a rag with Speedy and let is sit (while adding more as it dries) you'll break it up eventually.
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  #6  
Old 12-11-2018, 10:29 PM
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N804RV N804RV is offline
 
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Has anyone tried a "decal eraser" from ACS for this?

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  #7  
Old 12-11-2018, 10:53 PM
rmarshall234 rmarshall234 is offline
 
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Location: San Diego, CA
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I had a similar situation with a plexiglass canopy that had plastic film and dried white masking tape on it. Had been there for years and years. I tried all the usual things and then hit upon this:

First clean all the dust and dirt off the film. Then lay some 2" Blue masking tape over it (or duct tape if the blue isn't aggressive enough ) and press it down really, really well. All over. Pushing any potential air pockets out. Leave a "tail" on one end that you can get a firm hold of and then RIP THE TAPE off really quickly and the old film should come off too. It worked great for me. Good luck.
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Old 12-11-2018, 11:53 PM
Bicyclops Bicyclops is offline
 
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Location: LA, California
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Heat gun and a scraper made from a sharpened piece of plexi. Was still a lot of work.

Ed Holyoke
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  #9  
Old 12-12-2018, 06:18 PM
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kentlik kentlik is offline
 
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Quote:
Originally Posted by N804RV View Post
Has anyone tried a "decal eraser" from ACS for this?


This is what I would try. I use mine an anything stickyish. Just used it on my rover to get the "Range" off to fix a dent. Although mine is solid not stepped as shown.
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  #10  
Old 12-12-2018, 06:35 PM
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N941WR N941WR is offline
 
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WD40 helps. That is about the only thing that stuff is good for.
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