I was watching the show called Cool Tools the other day and I saw some cool tools. Go Figure!!
They are called Saburrtooth and are carbide burrs that come in different shapes and sizes.
They look like just the thing for working with fiberglass.
Anybody will tell you that has worked with fiberglass that it is death to cutters. It will dull them very quickly if they are not carbide.
The web site says they will cut
You can see them at www.saburrtooth.com
I am going to buy a few to try in my Dremil tool. BD.