Then mark centerlines on the plywood block.
How to enlarge hole in door for lock.
Your front door is the first thing visitors see so choosing the right door is critical to making a great first impression.
Lay the block on the door and align the two sets of center marks.
The lock itself is a bit larger than the old lock so i need to enlarge the mortise in the door.
Hole so you don t have to drill to enlarge the hole photo 2 step 3.
How to enlarge the door knob hole in a wood door.
To enlarge an existing hole.
This technique can be used to enlarge other holes as well including faucet holes on a kitchen countertop.
Most new deadbolts require a 2 1 8 in.
Then bore into the plywood and through the hole behind it.
Turn the door over remove the plywood disk from the hole saw and use the hole saw to drill through the other side of the door until the two holes meet.
Cylinder hole but some of them have inserts to fit the smaller 1 1 2 in.
The backset distance is usually either 2 3 8 or 2 3 4 in so make sure the new deadbolt has the identical backset.
This is a common problem when drilling a larger hole in a door for a new deadbolt or lockset.
When enlarging a lockset hole mark the centerlines of the old hole on the door.
Cut two scraps of 1 2 or thicker plywood making them several inches larger than the hole.