Surface crack

Surface cracks are caused by excessive shrinkage.

Corrective Action: 

Increase mold temperature to speed up curing

Reduce the line speed, the same as the above measures

Increasing the loading or glass content of the filler, increasing the toughness of the resin-rich surface, thereby reducing shrinkage,

Pressure and crack

Increase the level of low temperature initiator or use an initiator lower than the current temperature.

Add a surface liner or veil to the part