Drilling Out the Stripped Screw Head. You can use any kind of drill for this process. Find a drill bit that has just enough diameter to drill out the center of the screw head. If it's a Phillips head screw , find a bit that just covers the star shape in the center. Slowly begin drilling the center out of the screw head. It should go pretty fast. In the last of our Drill /Driver 101 videos, This Old House contributor Mark Clement shows you the proper technique for lining up and driving screws . Use these tips to avoid stripping screws and slowing your progress. Learn how to: • Avoid stripping a screw How to Drill Out Broken Screws . A screw may break during use for several reasons. While sometimes this can be because of a defect in the screw itself, usually a broken screw results from using a screwdriver or drill bit that is the wrong size for the screw . Removing a broken screw without damaging the surrounding material can be difficult.
Step 2. Place a drill bit in the electric drill's chuck and tighten the chuck. The bit should be the same diameter as the screw's shaft. Drill a pilot hole through the board and part way into the stud or other board. Remove the drill bit and replace it with a Phillips or screw driver bit. Step 1. Insert a drill bit of the same size as the screw (1/4 inch drill bit for a inch screw). Hold down the release lock for the tip of the drill, and insert the drill bit into the drill. First drill a 1/8-in. deep hole in the center of the screw head to accept the largest screw extractor that will fit the screw head. Place the extractor tip in the starter hole you drilled . Slowly spin the extractor counterclockwise and press down until you feel the extractor threads bite into the screw head.