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What's best way to check gray parts for voids?

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rparigoris

Joined: 24 Nov 2009
Posts: 805

Posted: Thu Jan 14, 2010 12:12 am Post subject: What's best way to check gray parts for voids?

I just finished doing battle with my instrument module taking out about 1/2" warp of the 3/4" warp that tapered from middle to the right side (right side being the worst). 



I was careful heating till it became slightly soft then clamped module flat. After leaving over night clamped flat I floxed on plywood and 2 BID over plywood then clamped that flat overnight. Nice fit to firewall now and flat/ stiff.



However a whole bunch of blisters occurred on the gray gel-coat ranging from 1/8" to 1/16" in diameter after I heated it. Upon cutting out blisters observation is everyone of the blisters has a void under it exposing shiny polyester resin, some of the voids quite deep and the gelcoat quite thin. I am afraid especial on cowl (perhaps doors too) after final paint once heated, blistering may occur. 



Any ideas best way to identify any voids on gray gelcoated parts?



I picked up my kit 04-2003 Kit # A265.



Thx.

Ron Parigoris

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Last edited by rparigoris on Thu Jan 14, 2010 11:27 pm; edited 1 time in total

kaarsberg(at)terra.com.br
Guest

Posted: Thu Jan 14, 2010 7:43 am Post subject: What's best way to check grap parts for voids?

BODY { font-family:Arial, Helvetica, sans-serif;font-size:12px; } 

  Hi Ron,

  

  Providing you have a reasonably quiet workplace (and a reasonably good hearing too), tapping the area in question with a coin. you should quickly hear the difference in sound...it´s like ultrasound inspection without the ultra:-)

  

  In spite of having been inactive on the building front for far too long, I want to thank you for your ceaseless publishing of 

  your trials and errors!

  

  Alex, kit 529

  

  On Qui 14/01/10 06:12 , "rparigoris" rparigor(at)suffolk.lib.ny.us sent:

   [quote]  

  I just finished doing battle with my instrument module taking out about 1/2" warp of the 3/4" warp that tapered from middle to the right side (right side being the worst). 

  

  I was careful heating till it became slightly soft then clamped module flat. After leaving over night clamped flat I floxed on plywood and 2 BID over plywood then clamped that flat overnight. Nice fit to firewall now and flat/ stiff.

  

  However a whole bunch of blisters occurred on the gray gel-coat ranging from 1/8" to 1/16" in diameter after I heated it. Upon cutting out blisters observation is everyone of the blisters has a void under it exposing shiny polyester resin, some of the voids quite deep and the gelcoat quite thin. I am afraid especial on cowl (perhaps doors too) after final paint once heated, blistering may occur. 

  

  Any ideas best way to identify any voids on gray gelcoated parts?

  

  I picked up my kit 04-2003 Kit # A265.

  

  Thx.

  Ron Parigoris

  

  

  

  

  Read this topic online here:

  

  [url=aHR0cDovL2ZvcnVtcy5tYXRyb25pY3MuY29tL3ZpZXd0b3BpYy5waHA/cD0yODE0MDAjMjgxNDAw]http://forums.matronics.com/viewtopic.php?p=281400#281400[/url]

  

  

  

  

  

  

  

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