On 7 Dec 2005 13:45:27 -0800, "chickenwing"
wrote:

it's brick and block. any ideas..
I don't have a drill that big, my goodness!

Rent a diamond hole saw and a big drill to power it at your local tool
rental place. It will be well worth the $20. You'll probably need an
extension as well, to get all the way through.

Alternative is to drill a ring of 1/4 inch or so holes with a hammer
drill and a long masonry bit and then chisel out the waste. It will
take a lot longer and will give you a rough sided hole, but will get
the job done.

HTH,

Paul Franklin