Mark the center of the existing hole on the edge of the door.
Old door enlarge existing door handle hole.
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To overcome this problem fasten a piece of 1 2 inch plywood over the existing hole.
Mar 25 2016 explore bruce wiseman s board home.
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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.
Then mark centerlines on the plywood block.
Measure the size of the existing hole in your door using a tape measure.
This old house general contractor tom silva installs an undetectable wood patch in an old door.
Clamp a piece of plywood to each side of the door lining up the center lines with the center line on the door edge.
The door handles in this house were set too high 1 4m.
When enlarging a lockset hole mark the centerlines of the old hole on the door.
They were moved down to 1m but now there are holes where the handles and strike plate used to be.
The plywood will hold the pilot bit on track until the saw starts cutting.