• Overview


The purpose of lapping is to meet flatness and parallelism and to make the 2 parts joined together engage exactly. It is a process of putting abrasive material between the surface of object and the surface plate, having the object and the surface plate make relative motion, and making the abrasive material shave an extremely tiny amount off the object surface to get smooth finished surface with exact dimension.


The purpose of polishing is to improve surface roughness, keeping the flatness and parallelism, and to get rid of the scratches after lapping. The work process is the same as lapping, except that the finer abrasive material improves the roughness of the object surface to get surface like a mirror.

Difference between Lapping and Polishing

It is actually difficult to differentiate lapping and polishing like above. However simply speaking lapping is to meet the dimension and preciseness of the object, while polishing is to gloss the object surface like a mirror after lapping.

It requires a lot of technology and knowhow to select the abrasive material and the surface plate as per object material and product.


  • Feature

For polishing, a way of surface finishing, it is a knowhow to select abrasive material and the way of abrasion based on the properties of object material and product. COMA Technology Co., Ltd., with its knowhow and technology through diverse experiences, assures top quality regardless of whatever material it would be.


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