Screwdrivers are among the most commonly used--and misused--tools. Although screwdriver methods seem obvious, using correct technique will maximize your efficiency and minimize hassle. Slotted screwdrivers come in sets with several different sizes (figure A). The size of the screwdriver used should correspond to the size of the screw head. You could break the head of the screw by using the wrong size screwdriver. Phillips-head screwdrivers also come in different sizes (figure B). Their heads have a cross-shaped slot to prevent slippage when driving a screw. Square-head screwdrivers have small heads that are easier to turn and less likely to break (figure C). The six-in-one screwdriver comes with reversible bits for driving screws of different sizes (figure D). Each bit has a Phillips head on one end and a slotted head on the other. Its shaft may also be used as a nut driver. The ratcheting screwdriver works by pushing rather than turning. Pushing on the handle turns a spiral shaft (figure E). Creating a Butt Joint With Screws When you're making a butt joint, screws give the wood a more secure fit than nails or biscuits. Here's how to create a butt joint with screws: Materials:
Drill
Dry-wall screws with fine threads
Drill bit the same size as the screws
Screwdriver shank for drill
- Hold the two pieces of wood in position, and drill a few pilot holes through the joint so the wood won't split (figure F). The holes must be the same size as the dry-wall screws.
- Insert the screwdriver shank into the holes, making sure that it will pass without binding. Drive the dry-wall screws into the pilot holes (figure G).
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