Re: Trick to drilling a larger hole without damaging wiring

[nmarkowitz@xxxxxxxxx]

On Jul 23, 11:40=A0am, jawdoc <drbro...@xxxxxxxxx> wrote:
> I want to replace a recessed sensor that someone prior placed a non
> metal contact in a metal door.
> I need to drill out the hole bigger. =A0But I don't want to bugger up
> the wire drilling.
> Is there a special drill or a trick to do this?
> I am scared in this particular door to push the wire up that I will
> not be able to retrieve it.
> Thanks in advance!

They do make a specail bit with hole in center but your looking $50 or
better  you could carefully use a dremel tool and widen hole that way
have done sucessfully sevral times