On Nov 1, 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

The video must have cut off before the obligatory "oh sh!@ that's the
wrong spot" comment from the person doing the drilling to the owner of
the glider. That's got me more than once.

Darryl