Circular Saw Saws Rotary Cordless Guide Battery Powered Skill Charger Blade
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An anti-snag lower guard is becoming the standard but some saws may still have trouble with snagging during beveled cuts. A lower guard that snags on the edge of a board can be dangerous. It can increase the chance of damage to the wood or blade but most importantly it can lead to serious injuries for people just learning to use a circular saw. - Motor Brake: This is exactly what it sounds like. Once you release the power trigger a brake engages that stops the motor from turning in about 2 seconds. It increases the safety of a saw though all circular saws have a lower guard that also helps protect a person and work surfaces from the spinning blade when the saw is not actually being used to make cuts. One additional advantage of a motor brake though is that it can allow you to make repetitive cuts quickly by reducing the time you wait for the blade to stop spinning from previous cuts. - Blower: A built-in blower is a nice feature.
A circular saw is a great tool and one of the most common tools in the workshop. It was invented in England back in 1780. The circular saw is also known as a buzz saw or commonly called the Skil saw even though Skil is a manufacturer that makes circular saws. With the right blade a circular saw is capable of cutting wood steel masonry and ceramic tile. Circular saws come in different sizes ranging from 3" to 16". The most common corded size is 7 1/4" and cordless is 5 3/8" & 6 1/2". There are two types of circular saws: IN-Line Saws and Worm Drive Saws. In-Line Saw - These are the most common types of circular saws and tend to be the least expensive. In addition they dont weigh as much as the Worm Drive saws. An In-line saws motor sits perpendicular to the blade and a shaft runs directly from the motor to drive the blade. An In-Line saw will suit most of your applications and except for changing the blades they are maintenance free. Worm Drive Saw - A worm drive is for heavy duty use and tends to cost a little more than the In-Line saws. A worm drive motor is positioned parallel with the blade and uses a gear to increase the torque transferred to the blade.
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Its generally used in framing roofing and carpentry. Usually these saws are heavier larger and provide more torque to help cut through denser woods and handle the tough demands of a work site. The Direct Drive Circular Saw: This is a more compact circular saw than the typical worm-drive saw. As the name suggests the cutting blade is directly attached to the motor. These can be very powerful but this is also the type of design used in some underpowered and cheaply manufactured saws. Lets look at the key differences between these two designs: - Line of Sight: Looking at these two categories of saws one of the first differences is the side of the saw that holds the blade. The hypoid and worm-drive saws have the blade on the left side of the saw which for many people means improved line of sight to the cutting blade during use. Most direct-drive hand held circular saws have the blade on the right side. People accustomed to this design may prefer it.