When installing a new interior door, often it is necessary to remove wood so the metal hinge can fit snugly against the side of the door. The broken door (above) with the hinge removed shows what the end result should look like. The best way to make a similar hole is to use a butt marker to outline where the hinge should go, then shave off the wood to the right depth (approximately 1/8 inch?) using a Dremel or chisel, then drill three holes for the hinge screw, then attach the hinge (the lower door).