More on Drilling the Main Rib…   March 8th, 2006

The last holes to drill in the main rib are those attaching it to the front spar. This requires a drill with a very small chuck. I looked at buying a 90 degree extension, but even those aren’t small enough for a hole which is perfectly perpendicular to the front spar. The closest I could get was by using an attachment on my dremel rotary tool:

This actually worked pretty good. The holes are ‘almost’ perpendicular, and getting straight rivets in them should not be a problem. I first drilled with a #40 drill, and then drilled to #30 from the other side with a long drill bit on my pneumatic drill.

I also drilled the holes from the front main rib into the spar with the long bit. After these are drilled and clecoed, I went ahead and match-drill all of the holes in the skin.

The next step is to take everything apart and dimple the skin and ribs…

This entry was posted on Wednesday, March 8th, 2006 at 3:52 am and is filed under Empennage, Horizontal Stabilizer. You can follow any responses to this entry through the RSS 2.0 feed.Both comments and pings are currently closed.

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