[NSRCA-discussion] Epoxy Removal

[Gray E Fowler]

Will be roasting chestnuts on an open fire........had some smoke 
inhalation issues last year with a closed fire.



Gray Fowler
Senior Principal Chemical Engineer
Radomes and Specialty Apertures
Technical Staff Composites Engineering
Raytheon



"wgalligan" <wgalligan at texasairnet.com> 
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11/01/2007 09:41 AM
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YES!!!    Next question.
 
----- Original Message ----- 
From: Gray E Fowler 
To: NSRCA Mailing List 
Sent: Thursday, November 01, 2007 10:46 AM
Subject: Re: [NSRCA-discussion] Epoxy Removal


Thank you Wayne-O, now go away. 

will you be home for Christmas...dear? 



Gray Fowler
Senior Principal Chemical Engineer
Radomes and Specialty Apertures
Technical Staff Composites Engineering
Raytheon 


"wgalligan" <wgalligan at texasairnet.com> 
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11/01/2007 08:51 AM 

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Grey I just knew you could come up with the final answer. 
You may proceed to the next level. 
  
WG 
 
----- Original Message ----- 
From: Gray E Fowler 
To: NSRCA Mailing List 
Sent: Thursday, November 01, 2007 9:28 AM 
Subject: Re: [NSRCA-discussion] Epoxy Removal 


On cured epoxy solvent will not work....before it damages your covering. 
Most likely you are using an epoxy that you bought at a hobby store or 
similar. At about 130F it will be above its glass transistion temperature, 
which means it will become rubbery and lose much of its adhesive 
characteristics. Take a covering iron, heat the epoxy directly with the 
iron and while it is hot you should be able to remove the epoxy much 
easier with your razor blade. Epoxy is a  "thermoset"  reaction so 
contrary to most peoples opinion, it will never melt nor dissolve with 
heat or solvent. 



Gray Fowler
Senior Principal Chemical Engineer
Radomes and Specialty Apertures
Technical Staff Composites Engineering
Raytheon 

"Ken Velez" <kvelez at comcast.net> 
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10/31/2007 11:06 PM 

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Hello all,

Is there any way posible to remove old dried epoxy from covering without 
damaging it besides trying to pick it of with a single edge blade or #11 
blade. It doesn't stick to covering like it does in wood but the blade 
leaves scratch marks on the covering. Any ideas, anybody???

Thanks,

Ken 


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