911 How To Videos
How to Enlarge a HoleBy: Joe Truini
It’s easy to drill a new hole, but how do you go about enlarging a hole that’s already there? This is a common problem when drilling a larger hole in a door for a new deadbolt or lockset.
To enlarge an existing hole:
- Cut two scraps of 1/2″ or thicker plywood, making them several inches larger than the hole.
- Mark the centerline of the existing hole on the edge of the door.
- Clamp the scraps of plywood above and below the hole.
- Extend the centerline of the hole across the top scrap of plywood.
- Measure from the edge of the door to the center of the hole, and mark it on the centerline.
- Chuck a hole saw in a drill and drill through the plywood and door.
Watch this video to see a simple way to get the job done in no time.
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