In article ,
Brian Gaff wrote:
It is more likely to be that the hole was not in fact at the point you
imagined. Its hard to follow the brick lines when a door frame is in the
way.

The question is why start from the outside in the first place if te pipes
are inside start from there and you will be sure not to hit them.
Brian

You get a neater finish to the hole if you start on the outside. The final
"breakthough" can be quite messy.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle