Trick to drilling a larger hole without damaging wiring

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

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

Greenlee makes a uni-bit that will work. If you can push the wire up in the door at least 1", widening the (probably) 3/8th hole to the 3/4 hole needed should make retrieving of the wire very easy. Hopefully, who ever installed it in the first place did a good job of getting it centered. Otherwise it could be a problem, not only on the jamb side but on the door as well because you are going to want to change the magnet too. If it is not on center, a larger hole could be to close to the edge of the door. Take a good look at things before you start drilling anything.

Good point about the magnet (the jamb side usually has a little more room). If the magnet is too far off center, fill the hole with "Plastic Wood" (Home Depot or any hardware store). After it sets up drill as usual.

Pack the wire in wet rags and then cut out your hole with a torch?

a small circle of primer cord would be faster

Your head technicians name is probably on the "no fly" list... :-)

Unfortunately, there are people like you who'd still let him fly.

After all, just because he uses a little C4 to drill a hole for a contact is no reason to suspect that he might use it for something else.

Why, Mohammad is the sweetest guy you'd ever want to meet.