[img]/forums/images/icons/tongue.gif[/img] You can forget the knock-out cutter that we normally use on electrical panels......the material that you mentioned is too thick. A cup-type hole saw will do the job; slow, but effective. [img]/forums/images/icons/crazy.gif[/img]
I ended up buying (3) 2 1/4" hole saws. I was able to accomplished what I wanted with fine style [img]/forums/images/icons/grin.gif[/img]
Installed 3 today and will finish tomorrow installing the rest of my chicken lights thru the front bumper [img]/forums/images/icons/cool.gif[/img]