On 11/1/2010 4:07 PM, Bob Kuykendall wrote:
Where do those big holes in the spars of composite gliders come from?
You know, the ones where they put the bushings that you insert the
main pins through?

Somebody with a big drill drills them.

http://www.youtube.com/watch?v=FZ3rISscO2I

Thanks, Bob K.

http://www.hpaircraft.com/hp-24


Interesting to compare your technique with the way it is done at Jonker
Sailplanes:

http://www.jonkersailplanes.com/factorypictures8.htm