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There are a variety of circular saws from ones that are mounted to other hand held options. One of the types of circular saws is the miter saw. This saw is known for its small cuts on an angle. The circular blade comes down on a piece of wood that is placed at a set angle. Using this type of circular saw is perfect for doing molding around the house making picture frames or other cuts that require an attention to detail. Another circular saw is the radial arm saw. This saw has a sliding horizontal arm that allows you to move it through a cut of wood. This saw is generally used to make long cuts accurately. As you place the wood on the table and push the handle the saw will cut through the board on the same line the entire time. The table saw which also uses a circular blade was created more for accuracy.
He doesnt want his circular saw to bog down in the middle of cutting a 2 x10 joist or have the sole plate hang up every time it goes across the edge of another board. He does not want to have the saw blade slipping around the saw arbor. What he wants is clean fast accurate cuts: In short power. A worm drive saw delivers the constant power he needs because there is no slack or play anywhere between the powerful motor and the saw teeth that are doing the cutting. The worm gear cuts down a bit on saw blade RPM but trades this off for torque. It is torque more than speed that powers a saw blade through thick wet wood. A diamond-shaped arbor makes it virtually impossible for the blade with a matching diamond-shaped hole to rotate around the arbor. Keeping the number of saw teeth down to 18-24 teeth on a 7 1/4" saw blade also helps. The only problem with early Skil worm drive saws was the weight with those large motors and all that gearing. The solution was to use magnesium instead steel in the construction of the saw wherever possible. The modern magnesium worm drive saws weigh only about 14 to 15 pounds which is more than a standard circular saw but manageable in the strong hands of a muscular framer. For continuous cutting higher voltage options (18V or 24V) for cordless circular saws are recommended. 18v cordless circular saws will find it much easier cutting through 2x lumber than those with lower voltage. In addition to the voltage look for saws that operate with Lithium Ion batteries. A 6 1/2" blade is also advisable.
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If youre looking for a lighter saw and one that is capable of cutting through materials such as concrete and plywood then investing in a sidewinder saw is your best bet. Trim Circular Saws For small scale projects such as paneling carpentry work finishing work or simply cutting through materials that are fairly thin trim circular saws are an ideal choice. They are extremely lightweight making them easy to control when using them. Adding to this they weigh between 4lbs and 8lbs with a blade diameter of between 3-1/2" to 4-1/2". There are many different varieties of the circular saw. This saw is generally classified by its circular blade which lumps it in a category with a variety of saws that use that blade. Using a metal disc with saw teeth the blade spins around and helps make an accurate cut.