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Go Back   VAF Forums > Model Specific > RV-12/RV-12iS
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  #11  
Old 01-09-2023, 10:45 PM
Marc Bourget Marc Bourget is offline
 
Join Date: Apr 2009
Location: Stockton, California
Posts: 402
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The idea behind deburring is to remove stress risers in/on ? the lower exit of the hole drilled into the tube.

Once the material gets thin enough, the drill doesn't cut any more, it tears the metal. That creates stress risers. Knocking off these torn remnants is not the same as deburring the hole.

You're better off if you achieve a chamfer on the inside of the tube.

They make deburring tools for just this purpose.

FWIW
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  #12  
Old 01-10-2023, 05:30 AM
thiggins thiggins is online now
 
Join Date: Mar 2020
Location: Saluda,NC
Posts: 189
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Debur from the outside. This tool allows you to debur both sides of a hole from the outside, using the correct hooked blade.


https://www.cleavelandtool.com/produ...8b985755&_ss=r
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  #13  
Old 01-10-2023, 06:22 AM
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BobbyLucas BobbyLucas is offline
 
Join Date: Oct 2019
Location: Belleville, MI
Posts: 399
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Another tool made specifically for this task: Noga Reversible Deburring Tool (mini)

https://www.amazon.com/NOGA-Reversib...s%2C119&sr=8-2
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  #14  
Old 01-10-2023, 10:23 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 3,348
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If you don’t have the fancy tool to keep the tube from rolling you can epoxy two parallel 1X2’s on a Piece of 2X4 with a1/2” gap in between and lay the tube in the gap to keep it from rolling while drilling.
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  #15  
Old 01-10-2023, 10:23 PM
JMS1198 JMS1198 is offline
 
Join Date: Oct 2020
Location: Mattituck, NY
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I attempted to look up the tool number, without success…my friend gave it to me and he was a military sheet metal guy, 30 years ago…I did see other types of bushings though…sorry guys.
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  #16  
Old 01-11-2023, 05:17 AM
thiggins thiggins is online now
 
Join Date: Mar 2020
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Quote:
Originally Posted by RFSchaller View Post
If you don’t have the fancy tool to keep the tube from rolling you can epoxy two parallel 1X2’s on a Piece of 2X4 with a1/2” gap in between and lay the tube in the gap to keep it from rolling while drilling.
In the aviation aisle at HF…


Harbor Freight Tools Self-Centering Drill Press Jig - Item 92046 / 47993 https://hftools.com/app92046
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  #17  
Old 01-11-2023, 09:53 AM
JMS1198 JMS1198 is offline
 
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I’m going to save some people a couple of hours of head scratching too…when building the right flaperon, the instructions say mirror the left, however this needs some interpretation. As confirmed by DOG Aviation, who called Vans, you have to switch the position of the left and right ribs (outer to inner and vice Versa, on the A1204 and the A1210) you will know that it’s correct because the A1207R will fit properly (I devoted two hours to this last night, running in place).
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