Switch to either a larger 3 4 inch 19 mm drill bit or a specially made cylindrical tubular lock bit.
How to drill a door lock hole.
1 tape the lock template to the door positioned so that it is square or.
This will destroy the entire lock.
In this video i will try 4 different way to drill open a lock.
Tubular lock bits are generally 3 75 inches 9 53 cm and similar to hole saws used to drill larger holes for installing locks in doors.
Step by step how to drill hole for new door knob https youtu be mdxyocu8wou.
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.
Drill through the entire mechanism.
Most interior locksets have a 2 and 3 8 inch backset.
To know where to drill this hole from the edge of the door you need to know the backset of the lockset.