A Disc sander is a power tool used to smooth wood or for wood finishes with sandpaper. Disc sander can be used on any material. Usually disc sander is used for edging purpose. Disc sander is an electronic tool which is a stationary standing disk with an adjustable worktable. A Disc sander is also called a palm sander. The Majority of disc sanders are table mounted models and these models contains high speed wheels which spin around in high speed. Other reputed models are belt disc sander and handheld disc sander. Disc sanders are available in different sizes; some standard sizes are 20 inch disc sander, 5 inch disc sander, 6 inch disc sander. Disc sanders are mainly of two types and these are: pad sanders & random orbital sanders. The pad sander is also named as a finish sander as often, it is used after the drum sander for smoothing or finishing purpose. Pad sanders are further categorized in four major types and these types are straight-line sanders, dual motion sanders, 3D sanders & orbital sanders. Random orbital sanders are also listed as dual motion sanders. Random orbital sanders are very versatile and commonly used sanders. As the name shows, it works in dual motion.