Andrew Gabriel wrote:
"Weatherlawyer" writes:

It sounds like you had found the steel. Even an SDS won't drill through that.

Oh it will -- rebar in concrete is not a problem for SDS. Of course, that's a really
bad thing to do in a lintel, where you often have only a single rebar anyway.

Time for you to take your tablets, take a deep swallow of water, then a
deep breath, make yourself comfortable, get yourself properly composed
and mentally balanced then read the ****ing thread you dimwit.

Then, who knows, you may find yourself ready to come to terms with the
fact that a pneumatic hammer pushing a revolving masonry bit will not
cut its way through anything.

The reason they revolve is so that they can sweep away the massive
quantities of dust they make pulverising the silicon crystals they are
designed to punch through.