Finishing processes prepares the finished surface or pre-coating preparation. Common finishing processes, such as cleaning, striping, or polishing require the use of chemicals, surfactants, detergents, acids, or abrasives. Deburring removes sharp edges from parts which is accomplished by tumbling the parts together, vibrating the parts with an abrasive agent, or sandblasting the parts. Honing and lapping are accomplished with tools. These processes serve to finish edges and surfaces, and to flatten or straighten parts.