A rotary tool is a hand held power tool with a variety of rotating accessory bits and attachments that can be used for cutting, carving, sanding, polishing and many other applications.
Popular brands include Dremel and Foredom._
The smaller rotary tools use high RPMs to maintain the correct cutting conditions for the tool bits.
They have low torque which makes them safer, for freehand use, than the larger higher powered models or similar power tools._
A wide variety of accessories are available for applications such as cutting, carving, sanding, polishing, and grinding.
The carving (or cutting) bits are referred to as burrs and are similar to those used by dentists._