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  #11  
Old 03-20-2017, 10:54 PM
rv9builder rv9builder is offline
 
Join Date: Jan 2005
Location: Irvine, CA
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This video from Cleaveland might help. It's midway down the page when you click on the link.

http://www.cleavelandtool.com/Edge-F.../#.WNCxTWXw9E4
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RV-12 Project: Working on Empennage
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  #12  
Old 03-21-2017, 03:46 AM
wilddog wilddog is offline
 
Join Date: Feb 2008
Location: va.
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Try reducing pressure on the rollers and go slow and you will get a nice edge. Whatever method you try for the repair, be sure it does not stretch the aluminum. Make the same mistake on some scraps and try fixing them first.
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  #13  
Old 03-21-2017, 08:11 AM
mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
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Quote:
Originally Posted by wilddog View Post
Try reducing pressure on the rollers and go slow and you will get a nice edge. Whatever method you try for the repair, be sure it does not stretch the aluminum. Make the same mistake on some scraps and try fixing them first.
Really good idea!! Thanks
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Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Empennage (sans fiberglass), ailerons and flaps complete.
Working on wing and fuel tanks.
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  #14  
Old 03-21-2017, 08:15 AM
mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
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Quote:
Originally Posted by daveyator View Post
When using the vice grip edge breaker, you are not looking for any real pressure. You should be able to do your break with one pass. Set the rollers so that they are the thickness of the material apart. Just put the parallel part of the rollers over the edge,then adjust so they roll easily. Then lock them off. Open and get them to the full depth, then close them. I found the best result was obtained by holding them in position, then using my other hand to roll the rollers slowly along the edge. You really do only need one pass to get the (very slight) edge break you are looking for. They are not a force forming roller, just a couple of shaped wheels that impart a nice shape to the edge. I had similar difficulties at first attempt, but once I worked them out, I swear by them, not at them.
Hope you can make sense of my long winded description. Good luck
Regards, DaveH
Thank you Dave, that was a very clear description.

Yes, I had them too tight.
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Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Empennage (sans fiberglass), ailerons and flaps complete.
Working on wing and fuel tanks.
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  #15  
Old 03-21-2017, 08:21 AM
mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
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Quote:
Originally Posted by rv9builder View Post
This video from Cleaveland might help. It's midway down the page when you click on the link.

http://www.cleavelandtool.com/Edge-F.../#.WNCxTWXw9E4
Yes, that video helped immensely...

I was adjusting it all wrong. Thank You
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Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Empennage (sans fiberglass), ailerons and flaps complete.
Working on wing and fuel tanks.
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  #16  
Old 03-21-2017, 09:04 AM
Neal Trombley Neal Trombley is offline
 
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Location: North Fort Myers
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are these a needed item? just loading up tools and want to get the correct ones
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  #17  
Old 03-21-2017, 09:26 AM
CubedRoot's Avatar
CubedRoot CubedRoot is online now
 
Join Date: Sep 2013
Location: Ooltewah, TN.
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Quote:
Originally Posted by Neal Trombley View Post
are these a needed item? just loading up tools and want to get the correct ones

Neal,
I would highly recommend that you get a set of these edge breakers / rollers.

I personally use this one: http://www.cleavelandtool.com/Edge-F...ductinfo/EF60/

But I have seen others use and like this one as well: http://www.cleavelandtool.com/EDGE-R...ductinfo/1042/

Both of those accomplish the same thing: The put a very small bend in the very edge of skins that will be overlapping each other. This way, when you rivet the two skins together, the pressure from the riveting doesn't cause the skins to "bow" or lift away from each other.

The EAA has a neat video on this: http://www.eaavideo.org/video.aspx?v=18987862001
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  #18  
Old 03-21-2017, 01:03 PM
Draker Draker is offline
 
Join Date: Jun 2016
Location: Livermore, CA
Posts: 51
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In my head I refer to that edge rolling tool as "Merciless Destroyer of Skins" to help remind myself each and every time to be patient with it and take it slow. I found the adjustment to be very finicky--it's either in "does nothing" mode or "metal mangle" mode. If you don't draw it down the length of the work piece straight, you'll either get an angled bend (if you pull laterally out too much) or it will "jump the rail" and crease the piece (if you push it in). Takes some skill and practice for sure.
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  #19  
Old 03-21-2017, 06:14 PM
mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
Posts: 15
Talking Fixed The Edge

Thanks for all the help!

I fixed the edge of the skin today. I used two hardwood blocks I had made for adjusting the trailing edge of the other aileron (per Van's section 5).

I followed a recommendation to cause a similar crease on a test piece of aluminum. This was easy since my Cleveland edge tool was still adjusted to tight.

I then practiced using the hardwood blocks to get most of the crease out. Then I use the table spoon with oil trick...WOW that works great!!

With fairly high confidence, I repaired the aileron skin using the same methods.

Here's a link to a video of the repair: https://youtu.be/odRe9k79eAE

Thanks again for all the help, it saved the day
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Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Empennage (sans fiberglass), ailerons and flaps complete.
Working on wing and fuel tanks.
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  #20  
Old 03-21-2017, 06:19 PM
mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
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Quote:
Originally Posted by gasman View Post
Tap it out on a wood block with a wood block and hammer so you won't stretch the aluminum.

You can press out a crease with a table spoon and a little lube.
Thanks, It worked great!

Here's a video of my repair: https://youtu.be/odRe9k79eAE
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Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Empennage (sans fiberglass), ailerons and flaps complete.
Working on wing and fuel tanks.
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