In article ,
Andrew McKay writes:
On Tue, 8 Jul 2003 23:48:16 +0100, "John Stumbles"
] wrote:

Core drills are just wimpy amateurs in the dust producing league compared to
these babes! ;-)

I stand corrected. Though when I used a core drill a few weeks back
for the first time I was amazed at the fine dust that came out of the
wall!

The box sinker (rotary type anyway) effectively turns the whole
core into dust too, and checks it out into the air.

--
Andrew Gabriel