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10-30-2013, 10:16 AM
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Join Date: Aug 2009
Location: Lexington, KY
Posts: 454
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Perpendicular drilling, free hand
Does anybody have an easy, practical way to drill perpendicular to the surface using hand held drill. I find it especially challenging drilling the door hinges (RV10) from inside! Any slight angle and the screw heads on outside highlights your mistake.
Thanks.
Johan
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Dorfie
RV10 Flying, N245JM
2020 dues paid with a smile
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10-30-2013, 10:22 AM
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Join Date: May 2010
Location: Denver
Posts: 564
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I would just eyeball it best as you can. If you don't like the result, glass it in and try again. Once completed, those screws will only be visible to NBA players.
Jim Berry
RV-10
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10-30-2013, 10:25 AM
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Join Date: Nov 2008
Location: Burleson, TX
Posts: 117
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Do you normally centerpunch first before drilling? This helps tremendously and the only other idea I would have is to create a drilling fixture if you feel it's worth the trouble.
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Ken
?Aviation is not so much a profession as it is a disease.? Anonymous
Building an RV-7
Empennage complete, fuselage 75%, wings 75%.
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10-30-2013, 10:35 AM
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Join Date: Sep 2007
Location: Dike Iowa
Posts: 117
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9A flying
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10-30-2013, 11:00 AM
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Join Date: Oct 2007
Location: In New Braunfels, ist das Leben schön!
Posts: 871
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I like to use this. In tight spots I've used the center guide without the plastic housing.
http://www.averytools.com/prodinfo.asp?number=25783

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Larry New
RV-7A - Built, flying 900+ hrs
RV-10 - Built, flying 2.9 hrs
??? - RV-12, Subsonex
48 States in 7 Days!
VAF Paid - Annual Autodraft
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10-30-2013, 11:49 AM
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Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,351
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Quote:
Originally Posted by larrynew
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Nice!!!!
I think I need to build another plane just so I can use these 
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Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
Dues paid
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10-30-2013, 04:11 PM
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Join Date: Dec 2011
Location: Livermore, CA
Posts: 6,797
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When drilling into something shiny like aluminum, look at the reflection of the bit and the bit itself - they should be a straight line, not a 'V'. You need to look both from the back and from the side.
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10-30-2013, 05:03 PM
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Join Date: Oct 2005
Location: 08A
Posts: 9,500
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There is always some way to make a jig.
http://www.kitplanes.com/issues/30_1...s_20873-1.html
Sadly, it is "subscriber only" content...but you can cure that 
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Dan Horton
RV-8 SS
Barrett IO-390
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10-30-2013, 07:56 PM
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Join Date: Jul 2007
Location: Delta, CO/Atlin, BC
Posts: 2,391
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What Bob said works, provided the aluminum is not bent or curved.
Greg
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Greg Arehart
RV-9B (Big tires) Tipup @AJZ or CYSQ
N 7965A
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