Clamp a piece of plywood to each side of the door lining up the center lines with the center line on the door edge.
Old door enlarge existing door handle hole.
2 draw a circle on a sheet of plywood measuring the same size as the hole in your door using a compass to make the circle.
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.
The door handles in this house were set too high 1 4m.
The plywood will hold the pilot bit on track until the saw starts cutting.
They were moved down to 1m but now there are holes where the handles and strike plate used to be.
Then mark centerlines on the plywood block.
When enlarging a lockset hole mark the centerlines of the old hole on the door.
Mar 25 2016 explore bruce wiseman s board home.
Mark the center of the existing hole on the edge of the door.
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Then bore into the plywood and through the hole behind it.
To overcome this problem fasten a piece of 1 2 inch plywood over the existing hole.
Measure the size of the existing hole in your door using a tape measure.