CORE Module 5 Intro to Power Tools Trade Terms (26)

Front

A granular, sand-like material used to make sandpaper and similar materials abrasive. _______ is graded according to its texture. The _______ number indicates the number of abrasive granules in a standard size (per in or per cm). The higher the _______ number, the more particles in a given area, indicating a finer abrasive material.

Back

Grit

Front

The smooth part of a drill bit that fits into the chuck.

Back

Shank

Front

The channel created by a saw blade passing through the material, which is equal to the width of the blade teeth.

Back

Kerf

Front

A clamping device that holds an attachment; for example, the chuck of the drill holds the drill bit.

Back

Chuck

Front

The common power supplied to most all wired devices, where the current reverses its direction many times per second. _______ power is the type of power generated and distributed throughout settled areas.

Back

Alternating Current (AC)

Front

An electric power supply where the current flows in one direction only. _______ power is supplied by batteries and by transformer-rectifiers that change AC power to _______.

Back

Direct Current (DC)

Front

A rating that describes the maximum amps a battery can provide continuously for up to 60 minutes. Drawing more amps than the battery’s rating is possible, but it reduces the amount of time before the battery is drained.

Back

Amp Hour (Ah)

Front

A circuit breaker designed to protect people from electric shock and to protect equipment from damage by interrupting the flow of electricity if a circuit fault occurs.

Back

Ground Fault Circuit Interrupter (GFCI)

Front

A drill bit with a carbide tip designed to penetrate materials such as stone, brick, or concrete.

Back

Masonry Bit

Front

A drill bit that includes steps which enable the user to cut holes in metal to a desired diameter.

Back

Step Drill Bit