When we use SLA 3d printer we may know that we need to use the process of curing. This maybe the last step for 3d printing sla. It may also use the cleaner to wash the prints first ,clean the surface of prints and then do the job of post curing. During the time, the temparature and voltage should be controlled well. If over curing or less curing will both cause the result of failure for prints. The surface will not be so smooth, and the resolution is not so good. So we should pay special attention to this aspect.