Which factors impact the prints’ dimensions? How to deal with them?
Most print parts need sufficient supports during printing. If there are no enough supports or supports are too thin/in wrong areas, print parts might lean or turn warped.
Solution: Optimize support structures by modifying support parameters and orientation angle during slicing in Blueprint Studio.
Resin may absorb alcohol and then bulge or turn warped, so print parts cannot be soaked in alcohol for too long, especially those with thin walls or with details such as thin pillars.
Solution: It’s advised to submerge prints in alcohol for no more than 5 min.
A printed part with a thin wall (wall thickness ＜ 1mm) might easily have a large dimensional deviation, if it’s improperly oriented, or it has certain structures like large cross sections, suction cups and abrupt increase of cross sections under the influence of stress concentration during printing and curing.
Solution:
A)Without changing the wall thickness, orientation optimization may improve the problem. It's advised to orient connection structures at the same angle, with connection side facing up to prevent supports from generating here. Also try to avoid certain structures like large cross sections, suction cups or abrupt increase of cross sections.
B)Parts are recommended to print with more rigid resin material. Thin-walled prints’ dimensions suffer from many factors, so it's recommended to increase wall thickness to 1mm or above if possible.
If Fuzzing is enabled during slicing, the printed object might have a ±0.05mm deviation in dimension accuracy at its edge.
Solution: For application demanding in dimension accuracy, it's recommended to disable Fuzzing during slicing in Blueprint Studio.
Due to the characteristics of DLP/LCD light curing 3D printing, overexposure (of various levels) at Z-axis direction might occur on holed or hollowed parts, resulting in smaller holes or flakes at Z-axis direction on print parts.
Solution: HeyGears UltraCraft Reflex adopts 385+nm light source, who results in less Z-axis overexposure than 405nm light source. The light source combines with Z-axis compensation (needs to be enabled during slicing in Blueprint Studio), accuracy deviation at Z-axis direction is expected to be ±0.05mm.
Oversanding might make print parts smaller. Additionally, if you have not sanded off support remains before measuring the part's dimensions, you would have a result larger than actual dimensions.
Solution: Follow documents provided by HeyGears such as SOPs and Complete Procedures for post-processing.
If you directly move on to curing before drying washed prints, or put washed prints aside for longer than 12 hours before curing them, the prints’ dimensions will be impacted.
Solution: Follow documents provided by HeyGears such as SOPs and Complete Procedures for curing.
HeyGears optimizes the dimension accuracy specially for each of its resin material via printing parameters, so wrong selection of the material for a slice job in Blueprint Studio might lead to failed prints, poor precision or other issues.
Solution: Choose the correct material during slicing in Blueprint Studio.