Posted for "JIM HANKINS" <jghankins@msn.com>:
I would like to suggest, for you folks still building, carbide cutting tools made by Farina Tools of Marietta, Okla.  I have used his burrs in building my Glasair III several years ago, and find them even more useful on cutting the carbon fiber on my IVP.   They last about 3 times as long as the other burrs that I have used and he will resharpen for a very small sum.

I believe the number is 580 276-2500.  Jim Hankins