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  #11  
Old 02-19-2015, 12:48 PM
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dwrichey dwrichey is offline
 
Join Date: May 2009
Location: Reedley, California
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It's kind of a shame it has to be fixed... it really is a beautifully done oval shape. (Almost like it was done on a mill!)
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  #12  
Old 02-19-2015, 03:49 PM
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cln1owner cln1owner is offline
 
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Location: Ehprata, WA
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Quote:
Originally Posted by MercFE View Post
All of the countersinks came out great... Except one. I can't tell you what I did, nor can I tell from looking at it as the impression of the cage didn't move. But, it appears that I got the countersink to walk somehow, leaving a perfectly oval hole in an HS-902 spar.
Victor, take a close look at your countersink cutter. I think you will find that the fluted or cutting portion of the cutter extends down onto the pilot/tip. If the material you are cutting is thin enough, and you introduce enough of a side load, the pilot itself can cut and allow the hole to oval out. A scrap piece of metal, clamped to the underside of the flange will provide more material as a guide.
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  #13  
Old 02-19-2015, 06:51 PM
MercFE MercFE is offline
 
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Location: Maple Valley, WA
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I am rather proud of it...

Quote:
Originally Posted by dwrichey View Post
It's kind of a shame it has to be fixed... it really is a beautifully done oval shape. (Almost like it was done on a mill!)
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  #14  
Old 02-19-2015, 07:22 PM
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Join Date: Sep 2009
Location: Rochester, MN
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Definitely listen to what Vans has to say and follow their advice, but when I spoke to them about a similar fault in my early building, I like the advice they gave me. They said "Don't forget what you are building. You're building an airplane". So when I screw something up, I ask myself whether replacing parts is critical for the safety and performance of the plane, or is the real issue cosmetics and the warm fuzzies I may get from seeking perfection.
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  #15  
Old 02-20-2015, 02:11 AM
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old pete old pete is offline
 
Join Date: Feb 2012
Location: Kalamazoo, Mi
Posts: 27
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now only if you could make an oval rivet to fit that oval hole. that would be some thing to see....
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