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  #1  
Old 02-22-2021, 07:24 PM
SantosDumont SantosDumont is offline
 
Join Date: Sep 2019
Location: Henderson, NV
Posts: 66
Default Accidentally dimpled a new hole through the skin

Is this oops salvageable? Or am I buying a new horizontal stabilizer skin?

https://photos.google.com/share/AF1Q...Q0cG9hcDFRT2JB

https://photos.google.com/share/AF1Q...Q0cG9hcDFRT2JB
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  #2  
Old 02-22-2021, 07:48 PM
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PaulvS PaulvS is offline
 
Join Date: Aug 2019
Location: Western Australia
Posts: 530
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The typical fix for something like this (it happens) is to flatten the stray dimple and then insert 2 new rivets either side, spaced mid-way to the next rivet in the line.
The figure 8 hole can be filled in later on with epoxy, before painting.
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Building RV-6A #22320 O-320 FP. Wings and tail complete, working on fuselage
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  #3  
Old 02-22-2021, 07:54 PM
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Carl Froehlich Carl Froehlich is offline
 
Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 2,826
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Id buy a new skin, but that is just me.

A repair might be:
- Add a 0.032 doubler behind that rivet hole, extending to the rivets on each side (so the doubler has three rivets in it.
- Drill out the one bad hole (and the doubler) to 1/8 and dimple the skin and doubler to 1/8. The doubler other holes are dimpled to 3/32 to match the skin dimples.

No one will notice the one larger rivet in the skin.

Carl
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  #4  
Old 02-22-2021, 08:18 PM
Kyle Boatright Kyle Boatright is offline
 
Join Date: Aug 2005
Location: Atlanta, GA
Posts: 4,374
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I'd put a rivet in the "normal" hole, flatten the extra hole, and add a rivet on either side of the normal hole. Whoever you get to paint it will take care of the cosmetics. I'm pretty sure that was the factory advice I received 25 years ago.
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  #5  
Old 02-22-2021, 09:31 PM
DickDe DickDe is offline
 
Join Date: Apr 2006
Posts: 202
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I did just the same on my horizontal about 20 years ago. Fixed it like Paul & kyle said and it is there yet today after 17 years and 600+ hours. It just blends in with all the other rivets.

Dick DeCramer
RV6 N500DD
Faribault, MN
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  #6  
Old 02-22-2021, 11:04 PM
Michael Burbidge Michael Burbidge is offline
 
Join Date: May 2006
Location: Sammamish, WA
Posts: 667
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Maybe it's just the photo, but the holes in general do not look very crisply dimpled. The immediately surrounding skin should lay very flat.

How are you dimpling these? I assume with a C-Frame.

Michael-
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  #7  
Old 02-22-2021, 11:45 PM
Taltruda Taltruda is offline
 
Join Date: Oct 2017
Location: Las Vegas, NV
Posts: 588
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I agree with the above about these dimples not being made hard enough. You dont want the pillowing around the holes like this. Search for Cleaveland tool dimple videos. Ask around for some mentors in your area, or see about taking a class, itll make your build go more enjoyable to get some pointers!
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Las Vegas
RV-8 empenage finished 10-2020

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  #8  
Old 02-23-2021, 09:26 AM
rongawer rongawer is offline
 
Join Date: Dec 2007
Location: Brentwood, CA
Posts: 701
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Rather than placing multiple rivets, another option is to oversize the hole and rivet, either with an “oops” rivet, or just go to the next size up that engulfs the incorrect hole.

What you’ve done is a pretty common error, so you’re not alone. Slow down the dimpling process and be sure you’re in the hole visually each time and you’ll be fine.
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Last edited by rongawer : 02-23-2021 at 09:29 AM.
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  #9  
Old 02-23-2021, 09:52 AM
SantosDumont SantosDumont is offline
 
Join Date: Sep 2019
Location: Henderson, NV
Posts: 66
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Quote:
Originally Posted by Michael Burbidge View Post
Maybe it's just the photo, but the holes in general do not look very crisply dimpled. The immediately surrounding skin should lay very flat.

How are you dimpling these? I assume with a C-Frame.

Michael-
I'm using a DRDT2. I guess I needed to adjust the strength. I did that, then redimpled a few of them and it looks crisper.
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  #10  
Old 02-23-2021, 10:13 AM
salty salty is offline
 
Join Date: Nov 2020
Location: FL
Posts: 72
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I'm curious how you managed to do that with a DRDT2. I ask so I can try to avoid following in your footsteps.
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