There is a common failure in SLA/DLP 3D printing: some parts of the finished product may be broken or delaminated as shown in the figure below, or a bubble may pop up with uncured liquid resin inside. This phenomenon has nothing to do with the stability of the Z-axis because the delamination phenomenon only occurs in certain parts. This phenomenon is mainly related to the curing of the resin, and the following aspects need to be checked.
- Resin
First of all, it is necessary to confirm whether the resin has deteriorated, expired, or has been contaminated. The resin that is not “fresh” will not be completely chemically reacted in some areas during the curing process, resulting in problems in the picture.
- Light source
Regardless of the specific principles of SLA/DLP/LCD, light-cured 3D printing requires a light source with sufficient energy to cure the liquid resin. If the energy of the light source is attenuated, or the light source in some areas is damaged, etc., it will cause incomplete curing and cause problems.
- LCD screen
LCD screen problems, such as screen aging and opacity, fracturing, etc., can also cause resin curing problems. Even if the energy of the light source is normal, if there is a problem with the LCD screen, it is impossible to provide enough curing energy through the LCD screen, which will also prevent certain areas from being completely chemically reacted, resulting in problems in the picture.