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A portable circular saw is one of the basic tools that should be in any homeowner's toolbox. With it you can cut any kind of wood or plywood quickly and accurately. Circular saws are available in various sizes, with different features, and in a pretty wide price range, from about $60 for a good entry-level tool up to $150 for something that might last a lifetime. The default tool and one that every manufacturer makes is the 7-1/4-in. model. This number designates the diameter of the blade that the tool holds.
This model is the most popular because it can cut through 1-1/2-in.-thick lumber (2 x 4s, 2 x 6s, etc.) in a single pass--at 90° and when the foot is tilted, at 45°. High-end saws have amp ratings of around 15, while less expensive consumer saws have motors that draw around 10 amps.
Unlike the other basic power tool that everyone should have, the portable electric drill, there aren't many accessories available for a circular saw. Specialty blades and a rip fence (both shown here) are about your only choices.
This tool is easy to use. However, it tends to be very loud, can create a lot of dust and is deceptively dangerous. Because it's compact, relatively lightweight, and its blade is nearly always covered by either the guard or the wood you are cutting, it's easy to become careless when using it. Make sure you understand the safety instructions that come with the tool, and follow them carefully whenever you are working.
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