Ishi, just do it the easy way. Buy something from Jerry then just cut a circle out of it! That way you got a 2fer!
Interesting idea...i could drill a hole the size of my finger, then use a hole saw for the external dimension. Plus, I could lighten up my beast of an INFI slab.
Please send me some INFI so I can run a test case <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />