How do you enlarge a hole in door?

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  #1  
Old 05-10-00, 09:04 AM
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Is there a easy way to enlarge the hole for the door knob set in a interior door. Trying to replace old door knobs with new. Old type is door knob, new is with European handles. The lock set fits but the hole needs to be slightly enlarged. Any help would be appreciated. Also, can this be done without taking the doors down. The old door hole is 1 and 3/4ths inch in diameter. Need 2 and 1/8th inch diameter hole.

[This message has been edited by aa4od (edited May 10, 2000).]

[This message has been edited by aa4od (edited May 10, 2000).]
 
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Old 05-10-00, 01:36 PM
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You will need a 2-1/8" hole saw- preferably a deep cutting type, a scrap piece of plywood or 3/4" pine and wood clamps (or C clamps with wood blocking to prevent marring). Drill the pilot hole from the holesaw into the scrap wood. Position the scrap wood over the old hole so the pilot is centered and securely tighten wood clamps.
Use care in drilling or you might ruin the door---I.E. you may need a back-up block of wood on the opposite side of the door to prevent splintering of the wood by the holesaw

Hope this works...
 
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Old 05-10-00, 07:27 PM
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Suggest you check with Viki Mangan.
 
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Old 05-12-00, 06:43 PM
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Make sure that your backset is correct before you start drilling the new hole!!

You more than likely have a 2 3/8" backset on your new lockset. That's measured from the door's edge to the center of the 2 1/8" hole. You'll also need to drill a 1" bore for your latch.

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