A: Reason: This situation is because the matching degree of the printer and the resin is different from the light intensity of each printer itself.

Solution: It is recommended to test the best exposure time of the printer by yourself.

Test method: Model 5 small squares (5mm) and cylinders (10mm) for testing, and place them in the middle and 4 corners of the platform respectively. The exposure time is the time recommended by the resin manufacturer, and the layer thickness is 0.05mm. Print once and measure the print. When the measured value size is too large, the exposure time should be reduced (for example, the measured value is 5.12mm, the exposure time should be reduced by 1 second), when the measured value size is too small, the exposure time should be increased (for example, the measured value is 4.84mm, should be increased 1 second exposure time), repeatedly change the exposure parameter—print—measure, and adjust it to within the range of model error that the machine can reach. At this time, it is the best exposure time corresponding to the machine.