Design for SLA 3D printing – tips
The design of 3D models for SLA 3D printing must be developed taking into account several requirements to ensure successful printing:
- Wall Thickness: The wall thickness of the 3D model should be no less than 0.4 mm. Thin walls can lead to fragility and/or deformation of the model during printing.
- Support structures: Supports may be needed for complex models or models with protrusions. These structures should be included in the 3D model file and can be automatically generated by the slicing software used to prepare the model for printing.
- Orientation: The orientation of the model can impact print quality. Flat surfaces should be oriented parallel to the build platform, and any protruding elements should be angled to prevent sagging or damage during printing.
- File Format: The most commonly used file formats for SLA 3D printing are STL and OBJ. These files should be exported with high accuracy to ensure the final print accurately reflects the original 3D model.
- Resin Compatibility: Different resins have varying curing properties and may require different exposure times or laser power settings. It’s important to verify the compatibility of the resin with the specific SLA 3D printer being used and properly configure printing parameters.
- Post-Printing Processing: SLA 3D printed parts require post-printing processing, including solvent cleaning to remove any uncured resin and UV curing for complete part solidification. The 3D model should be designed with this in mind, leaving enough room for solvent access to all areas of the print.
By keeping these requirements in mind during the design of 3D models for SLA 3D printing, you can achieve high-quality prints with smooth surfaces and a high level of accuracy.
