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  #1  
Old 12-20-2013, 09:12 PM
daviid daviid is offline
 
Join Date: Jan 2010
Location: Plainville, CT
Posts: 104
Default First mistake

While dimpling away on the VS Skin, I got a little excited and with about 6 holes left, dimpled one of the holes on the bottom the plans say to not dimple. Not to be stifled by this, I decided I was going to pound it back with my rivet gun. In a additional stroke of brilliance, I decided to use a bucking bar on top of the dimple. This caused a small crease, I want to say less then 2 inches long. It doesn't seem to bad, but im curious if I should replace the skin

http://rv10.daviid.net/gallery/i.php...486adc3-me.jpg

http://rv10.daviid.net/gallery/i.php...f86129b-me.jpg

I don't think its blatantly obvious that is there, but if I look for it, I can see it
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  #2  
Old 12-20-2013, 09:20 PM
Kyle Boatright Kyle Boatright is online now
 
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Location: Atlanta, GA
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Quote:
Originally Posted by daviid View Post
While dimpling away on the VS Skin, I got a little excited and with about 6 holes left, dimpled one of the holes on the bottom the plans say to not dimple. Not to be stifled by this, I decided I was going to pound it back with my rivet gun. In a additional stroke of brilliance, I decided to use a bucking bar on top of the dimple. This caused a small crease, I want to say less then 2 inches long. It doesn't seem to bad, but im curious if I should replace the skin

http://rv10.daviid.net/gallery/i.php...486adc3-me.jpg

http://rv10.daviid.net/gallery/i.php...f86129b-me.jpg

I don't think its blatantly obvious that is there, but if I look for it, I can see it
I would not replace the skin unless you absolutely *must* build the perfect RV-10. If you go that route, please send me all of your cast-off's, because you'll have enough discards to build an extra airplane.

If the crease is an "innie", your painter will be able to fix it with ease. An "outtie" will be more noticeable. Next time you make an accidental dimple, use your squeezer and a pair of flat sets to undimple it.
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  #3  
Old 12-20-2013, 09:51 PM
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aturner aturner is offline
 
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Location: Clarion, Pennsylvania
Posts: 571
Default

There is a fiberglass fairing that will cover the lower inch or so of the vs, so no sweat. You are leaving the hole undimpled because it will eventually have a #6 nutplate behind it that will allow you to secure the fairing.
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  #4  
Old 12-20-2013, 10:20 PM
daviid daviid is offline
 
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Thanks guys, I was more concerned from the structural point of view. Seems like I was going to go bonkers for nothing
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  #5  
Old 12-20-2013, 10:26 PM
BillL BillL is offline
 
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Location: Central IL
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An engineer, one I had great respect for, had this saying in a plaque on his wall: "In our pursuit of perfection, we oft mar what is well." I think it is from Shakespeare, King Lear "Striving to better, oft we mar what?s well."

You can decide what will solidify this lesson so that your building habits and procedure avoids such events in the future. I think this is why the emp section on most planes has the most "blemish cream" (high build primer) under the paint. I go a lot slower now and think several steps ahead. It is not always enough.

Happy building.
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  #6  
Old 12-21-2013, 07:09 AM
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Bill.Peyton Bill.Peyton is offline
 
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Location: St. Louis, MO
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It's hard to tell from your photo, but I would make sure that there are no fractures in the metal. Look very closely with a magnifying glass. If you don't see any then build on.
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  #7  
Old 12-21-2013, 09:47 AM
rocketman1988 rocketman1988 is offline
 
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Location: Sunman, IN
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Default It won't be the last...

Build On...
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  #8  
Old 12-21-2013, 10:30 AM
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CharlieWaffles CharlieWaffles is offline
 
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A squeezer or pneumatic squeezer can be used to "undimple" a hole without much ill effect to the surrounding area.
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  #9  
Old 12-21-2013, 11:26 AM
dhmoose dhmoose is offline
 
Join Date: Jun 2010
Location: Portland, OR
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Quote:
Originally Posted by aturner View Post
There is a fiberglass fairing that will cover the lower inch or so of the vs, so no sweat. You are leaving the hole undimpled because it will eventually have a #6 nutplate behind it that will allow you to secure the fairing.
Doesn't the fairing flange go underneath the aluminum skin in the area...thus not covering up the blemish?

Either way, I wouldn't worry about it unless the skin is fractured.

David
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  #10  
Old 12-23-2013, 08:47 AM
Rupester Rupester is offline
 
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Location: Mahomet, Illinois
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Quote:
Originally Posted by BillL View Post
An engineer, one I had great respect for, had this saying in a plaque on his wall: "In our pursuit of perfection, we oft mar what is well."

Happy building.
Thanks for this one, Bill. it's a keeper.
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