Surface not dry

Cause 1: Post-treatment

Insufficient alcohol concentration or cleaning with water before cleaning , resulting in oil-water reaction whitening or cleaning is not clean, it is recommended to use more than 95% concentration of alcohol or use IPA cleaning, the use of ultrasonic cleaning 3-5min, viscous resin should increase the cleaning time and times; cleaning after not doing post-curing surface is not dry, it needs to be post-cured until the surface is not sticky , If the post-curing time is too long, the surface may turn white.

Cause 2: Cutting

exposure time is too long, resulting in a surface too bright, normal exposure surface close to matte

Cause 3: Light source

part of the light source is not uniform light, may lead to inconsistent exposure of different areas, resulting in surface cleaning is not clean.