From Wikipedia, the free encyclopedia
A die grinder is a handheld tool which turns a burr or mounted abrasive stone at high speed. It is usually pneumatic (powered by compressed air), although electric die grinders are also common. The burr or stone is held in a collet and may be changed as required by the task at hand. The rotational speed of a pneumatic die grinder is adjusted by a hand-operated throttle, which allows the operator to vary the volume of compressed air entering the tool. Die grinders are used to grind or cut away small amounts of metal from a workpiece. The name comes from their use in touching up hardened steel dies.
[edit] Safety
Most die grinder throttles feature a spring-loaded "kickstand" mechanism between the throttle lever and the body of the grinder, which prevents the throttle from opening (being pressed down towards the body of the grinder) without operator intervention. This prevents the die grinder from accidentally activating.
