I need to knockout a pre-punched hole in the bottom of my breaker panel.
the hole size will be fairly large, but not quite as big as the outer ring.

I'm kind of wondering how to "knock out" JUST the rings I -want- knocked
out, withOUT knocking out any 'undesired' outer knockouts in the same
circle...

please see this image and tell me if I have it right...

http://www.image-upload.net/files/53...uts_how-to.jpg

thanks

toolie