Lapping or Polishing
Lapping and polishing are processes designed to remove material from a work piece to achieve a desirable surface finish, dimension, shape or combination of these characteristics. The similarities between lapping and polishing are in the fact that they both use an abrasive in an oil or water based carrier, a vehicle to carry the compound to the work piece and the removal of material from the work piece to achieve the desired finish. The main difference between lapping and polishing is the amount of material being removed and the final appearance of the work piece. Lapping can remove much more material and leaves a dull matte finish, while polishing removes a small amount of material and leaves a bright, reflective finish.