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| DRILL PRESS VISE
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Drill press vises are clamps used to hold the workpiece to provide steady operation. |
| DRILL RPM
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Drill rpm indicates drilling speed. Generally, the harder the workpiece material the slower (lower rpm) the speed should be. Ferrous metals are best drilled at speeds in the 300-500 rpm range. Most other work can be done more cleanly and faster at higher speeds up to 1200 rpm. Sanding and polishing are usually done at higher speeds. The best way to have many drill-speed advantages is to use a variable speed drill. |
| DRILL SAW
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Drill bit, used in a drill motor to both drill and then enlarge a hole, by use of cutting teeth along the shank of the bit. |
| DRILL SIZE
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Drill size (also called drill capacity) is rated in inches and indicates the maximum bit shank diameter of the chuck, not drilled hole capacity. |
| DRILL SPEED
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Drill speed is how fast a chuck turns. It is measured in rpms (revolutions per minute). Softer materials can be drilled at higher speeds of up to 1300 rpm. For a fast, clean drilling operation, metals and other hard materials require slower speeds. Speed decreases as drill size increases, while drill power increases. |
| DRILL TORQUE
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Drill torque is the gear-generated turning or twisting force required to spin a cutting tool at the speed necessary to achieve the task at hand. Higher torque, necessary for driving screws, requires higher drill power. |
| DRILL-DRIVER
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A drill-driver is a drill which has an adjustable (multi-setting) torque clutch so that torque can be increased to drill holes and decreased to drive screws. |
| DRIP
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(1) To let drops of liquid fall; to fall in or as in drops. (2) Projecting part of a sill, cornice, etc. that has a underside groove to shed rainwater. |
| DRIP CAP
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Projections at the top of doors or windows, which are used to redirect water. |
| DRIP CHANNEL
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A metal channel that is designed to prevent water running down a shower door from dripping onto the floor when the door is opened. |
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