Exterior locksets commonly have a 2 and 3 4 inch backset.
How to drill a door lock hole.
Switch to either a larger 3 4 inch 19 mm drill bit or a specially made cylindrical tubular lock bit.
Step by step how to drill hole for new door knob https youtu be mdxyocu8wou.
Most interior locksets have a 2 and 3 8 inch backset.
These methods can be used for the majority of locks you come across around your house.
To know where to drill this hole from the edge of the door you need to know the backset of the lockset.
1 tape the lock template to the door positioned so that it is square or.
This will destroy the entire lock.
The backset is the distance from the edge of the door to the center of the giant hole you drill in the face of the door.
In this video i will try 4 different way to drill open a lock.