Draw a center line on the plywood and mark setback of the hole from one edge of the plywood.
Make lock hole bigger in metal door.
Mark with an x the center spot for the doorknob hole on each side of the door.
Drill a pilot hole with a inch bit straight through the door.
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To overcome this problem fasten a piece of 1 2 inch plywood over the existing hole.
The plywood will hold the pilot bit on track until the saw starts cutting.
How to cut a hole for a door knob in a metal door.
Cut two pieces of scrap plywood several inches larger than the diameter of the hole.
Place the template that comes with the lockset on the metal door.
Take your time so you keep the.
Mark the center of the existing hole on the edge of the door.
Then bore into the plywood and through the hole behind it.