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Polishing and Rivet Heads

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a.s.elliott(at)cox.net
Guest

Posted: Tue Jan 16, 2007 9:43 am Post subject: Polishing and Rivet Heads

Gang:

  

 About to begin polishing the bottom of the fuselage with Nuvite F9, and I  have a question about treating the rivet heads.  It seems that many of my  rivet heads have a very slight edge to them in the middle where the dome shape  meets the mandrel hole.  Can't hardly see them, but can feel them with a  finger.  I think these edges will tend wear out the compounding pads  prematurely.

  

 I was considering touching all of them lightly with ultrafine Scotchbrite  on a 2" mandrel in the angle grinder to remove this edge.  I was wondering  what other people who are polishing have done, if anything, to prep their  rivet heads for polishing.  

  

 Thanks,

 Andy Elliott, Mesa, AZ

N601GE (reserved)

601XL/TD/QB, Corvair,  building...

   [quote][b]

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ronlee

Joined: 25 Dec 2006
Posts: 141

Posted: Tue Jan 16, 2007 12:00 pm Post subject: Re: Polishing and Rivet Heads

I had the same situation, a little sharp ring at the top of the rivet heads. I punched a hole in an old credit card (to protect the surrounding metal), placed it over the rivet and ran fine sandpaper over the rivet head. This fixes the problem quickly.

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_________________
Ron Lee
Tucson, Arizona

tshank(at)core.com
Guest

Posted: Tue Jan 16, 2007 5:47 pm Post subject: Polishing and Rivet Heads

Andy,

 I did the whole plane, rivets and all without any treatment of the rivet heads. The is more of a problem if you have a rivet that isn't seated well then a few strands of the wool will get under it. 601HD polished and still looking good about a year, although I should wash it.

 

 Tim Shankland

 

 

 Dr. Andrew Elliott wrote: [quote]         BODY { 	BACKGROUND-POSITION: left top; MARGIN-TOP: 10px; FONT-SIZE: 11pt; MARGIN-LEFT: 10px; COLOR: #000000; BACKGROUND-REPEAT: no-repeat; FONT-FAMILY: Courier New }         Gang:

    

   About to begin polishing the bottom of the fuselage with Nuvite F9, and I have a question about treating the rivet heads.  It seems that many of my rivet heads have a very slight edge to them in the middle where the dome shape meets the mandrel hole.  Can't hardly see them, but can feel them with a finger.  I think these edges will tend wear out the compounding pads prematurely.

    

   I was considering touching all of them lightly with ultrafine Scotchbrite on a 2" mandrel in the angle grinder to remove this edge.  I was wondering what other people who are polishing have done, if anything, to prep their rivet heads for polishing.  

    

   Thanks,

   Andy Elliott, Mesa, AZ

 N601GE (reserved)

 601XL/TD/QB, Corvair, building...

    	  Quote: 	
		  

	
 [b]

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pmaxpmax(at)HOTMAIL.COM
Guest

Posted: Tue Jan 16, 2007 6:50 pm Post subject: Polishing and Rivet Heads

Two comments about Nuvite polishing:

  

 1. I don't recommend using the courser grades of Nuvite.  You would be better off starting with a wet sand of 1000 grit sand paper and then wet sanding with 1500 grit sand paper.  After that go to Nuvite C and S.

  

 2. Don't worry a thing about your rivet heads.  The rivets and the area right beside them will polish to a shine much quicker than the unsupported areas of the skin between the rivets.  I didn't even put Nuvite on the rivets and they are the shiniest part of the plane.

  

 Pictures can be found at http://flycorvair.com/snf2006.html  (middle of page) and video here: http://zenvair.com/  Also, middle of the page.



Phil Maxson

601XL/Corvair

Northwest New Jersey

  	  Quote: 	
		     

 From: a.s.elliott(at)cox.net (a.s.elliott(at)cox.net)

 Subject: Polishing and Rivet Heads

   .ExternalClass {background-position:left top;font-size:11pt;margin-left:10px;color:#000000;background-repeat:no-repeat;font-family:Courier New;}   Gang:

  

 About to begin polishing the bottom of the fuselage with Nuvite F9 <<SNIP>>

	
Get free, personalized online radio with MSN Radio powered by Pandora. Try it!  [quote][b]

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naumuk(at)alltel.net
Guest

Posted: Wed Jan 17, 2007 3:24 pm Post subject: Polishing and Rivet Heads

Phil-

     1. I disagree as far as grade  selection. It takes longer to wet sand, then compound with a lighter grit with  my skins. (They're nearly 4 years old and were stored in a dehumidified  basement). That would approximate the condition of a completed airframe  stored in a the average garage (With the exception of the skins stored next to  the block walls). Feel free to come over to my shop and prove me  wrong.

     2. I agree with you on the rivets. Wear  and tear isn't what kills bonnets, accumulated gunk that won't come out even  with TSP soaks is. 

                                    do  not archive?

 Bill Naumuk

HDS Fuselage

Townville, Pa

 [quote]   ---

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