1, insufficient pretreatment of rough grinding. Before optical fine grinding, pretreatment steps such as rough grinding are needed. If the rough grinding treatment is insufficient or uneven, there will be less silk in optical fine grinding.
2, abrasive selection is not appropriate. The choice of abrasive has an important influence on the effect of optical fine grinding. Abrasives with different materials and particle sizes are suitable for different optical materials and surface requirements. Choosing inappropriate abrasives leads to less silk output during optical fine grinding.