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drilling 3/4 inch holes in inboard ribs

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cjhukill(at)cox.net
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Posted: Thu Feb 04, 2010 7:57 am Post subject: drilling 3/4 inch holes in inboard ribs

I just completed the task of up-drilling those 5/8  holes to 3/4, not for conduit, but for larger bushings. Go to Harbor freight and  buy a 3/4 inch max step drill for $7.00 and install it into a drillbit extender.  I already had a quarter inch one, and had to drill out the female end a tad to  accept the 1/4 inch HEX on the step drill. If you don't already own a drill bit  extension, buy one a HF, you'll use it countless times during your build.  

 With the 3/4 inch step drill/ extension rig, just  up-drill the inboard rib, thru that to number 2 rib, thru that to number 3 rib,  etc.

 De-bur the holes, and your done.

 Chris Hukill

 Wiring the wings

   [quote][b]

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