Screwdrivers are usually classified as flat head or cross-headed. Cross-headed screwdrivers have cross-shaped tips. Take care to use the correct type, since a mismatch may damage the head of the screw or the screwdriver.
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Be sure to select an appropriate screwdriver to match the size and type of screw. Hold the screwdriver at right angles to the screw head, then ensure that the tip of the screwdriver is fully inserted into the head of the screw before turning it. Turn the screw clockwise to tighten it and counterclockwise to loosen it. Depending on the length of the screw, it may be necessary to adjust your grip several times. To insert a wood screw without damaging the wood, first you may need to drill a pilot hole.
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