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Misplaced Dimple Hole where Skin Stiffener SURFACE contacts

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japhillipsga(at)aol.com
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Posted: Thu Oct 16, 2008 11:45 am Post subject: Misplaced Dimple Hole where Skin Stiffener SURFACE contacts

Garey, sorry you messed up, but it won't be the last. I to have made a few extra holes and dimples. Unless it is structural what I did was install a short flush rivet and let it go. Sometimes you can make a bigger mess attempting to correct a flaw then just to plug and move on. There may be a "perfect" plane out there, but I doubt it. Good Luck, Bill of Georgia RV-8a finishing kit  

 

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aerobubba(at)earthlink.ne
Guest

Posted: Fri Oct 17, 2008 5:38 am Post subject: Misplaced Dimple Hole where Skin Stiffener SURFACE contacts

Hi Garey-



I would have suggested to do as Bill did, and just put a flush rivet in the

extra hole.  Having already oversized the hole, I'd recommend removing all

the cracked material, assembling the structure, and then filling the hole

with a dryish mix of epoxy / micro balloons. Properly filled and sanded,

you'll never be able to tell there was an 'oops' there.



glen matejcek

aerobubba(at)earthlink.net



 	  Quote: 	
		   Subject: Misplaced Dimple Hole where Skin Stiffener SURFACE

contacts
	


 	  Quote: 	
		   the Skin

 Greetings:



 Found no answer to this in Matronics archieves.



 While dimpling the Elev Skin accidently punched a hole and made a dimple

about
	


 	  Quote: 	
		   1/8" from the desired location where the Skin Stiffener SURFACE MEETS THE

SKIN.
	


 	  Quote: 	
		   (Stiffener was previously drilled / dimpled.)  I "gently' flattened the

misplaced
	


 	  Quote: 	
		   dimple with minimum thinning of the Skin - very slight dimple remains. 

 Then dimpled the desired rivet hole.  The 2 dimples (desired and the

flattened
	


 	  Quote: 	
		   undesired dimple) slightly over lap at their outer edges. Took a #49

drill and
	


 	  Quote: 	
		   drilled the undesired dimple hole to relieve MOST of the Skin cracking at

the
	


 	  Quote: 	
		   hole edges.



 Question:  Any suggestion on how to prevent possible "future" cracking of

the Skin
	


 	  Quote: 	
		   where the undesired dimple is ??  Use RTV to fill the hole from the Bottom

 Side and Super Fil to cosmetically fill in the Top Side of the Skin ??

(Do not
	


 	  Quote: 	
		   believe RTV can be painted over - otherwise would use RTV on both sides

??)
	


 	  Quote: 	
		  

 Appreciate suggestions,   Garey

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