1. Commonly used in machinery industry only oilstone natural abrasives.

2. The finisher's oilstone-pressing system adopted air-pressing technology by combining shuttle valve with proportion valve, which made oilstone pressure realize classless pressure adjustment .

3. Ultrasonic vibrancy honing has many advantages, such as small honing force, long oilstone life.

4. It provides an experience with using heavy honing technology and selecting heavy honing oilstone.

5. First of all, to deal with some spraying petrol, acetone for degreasing treatment with a file, fine sandpaper, oilstone will fatigue layer and oxide layer removed to expose the metal color.

6. This paper describes main characteristics of heavy honing technology and oilstone, and their application at home.