I made a miniature table saw for use by jewelers, designers, and hobbyists.
It is an attachment for your power drill. As a motor, the saw uses a user supplied corded electric drill. The drill plugs into a controller, that uses a knob to adjust the speed of the drill. This allows speed control, letting you cut woods, plastics, composites, and metals.
It also has a liquid lubrication system that surrounds the blade with water/coolant that is constantly recirculated by a miniature pump. This keeps the blade cool and traps the cutting dust. Uses 1/2" ID saw blades.
More build pictures and info here: http://www.mrlemieux.com/the-ringinator-table-saw/