| Tool Tips > Glossary |
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| A |
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| AdjustableCountersink - a device that cuts the recess for screw heads and threads. It has a drill bit or knife blade for cutting the recess for the screw thread whose length adjusts to the length of the screw head. |
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| Adjustable wrench - a wrench that has an adjustable head to fit various sizes of nuts and bolts. Some adjustable wrenches feature a locking mechanism to prevent slippage.
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| Alternate top bevel grind - a tooth style on a saw blade designed for cross-cutting and ripping of all wood types. The bevel alternates from left to right, creating knife-like edges at each side, on alternating teeth. This style of saw blade yields a faster, cleaner cut. |
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| Anti-stick coating - As used on saw blades, decreases friction and heat buildup and helps provide cleaner, smoother and quieter cutting action. Also resists resin and pitch buildup and improves safety conditions. |
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| Anti-vibration slots - slots cut in the body of a saw blade, usually in a starburst pattern, that reduce vibration so the blade runs more smoothly and produce a cleaner cut. |
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| Arbor - a shaft driven by a tool's motor that turns blades or other cutting tools. Also called a mandrel. |
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| Arbor hole - the central hole in a saw blade through which the saw arbor fits. This hole must be accurately broached or the blade cuts will waver. |
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| ATB - Alternate Top Bevel - refers to a type of saw blade in which the grinds give the cleanest crosscuts in hard and soft wood or plywood. |
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| Auger bit - a long, 7" to 10" bit typically used with a brace for drilling holes in wood. An auger bit bores a faster, cleaner hole because of its screw point and spur design. |
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| Aviation snips - snips used to cut straight or curved lines. They are generally used for heating, air conditioning, gutter work, and general industrial use. Aviation snips are available in right- or left-handed styles. |
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