Easy way to cut holes for fans

[AKDUDE]

I asked about Nibblers on the Mod forum, and found on some good stuff.

Heres a site that shows them in action http://www.techmocracy.com/poitsplace/articles/nibbler/page2.shtml
Hmm The link only seems to work if you copy and paste it. Sorry. Guess the guy dosn't want people linking to his site?
AKDUDE