Shrink Line
Shrink Line
Lines on the part surface corresponding to changes in geometry.
How to Identify
Shrink lines can be diagnosed as follows:
- Lines correspond to a feature change in the geometry.
- Lines can appear in any direction relative to the build platform.
- Lines do not have a sharp edge.
- Lines can often be seen but not felt.Cosmetic only
Cause - Cross Section
Solution - Print Preparation or Part Design
Cause - Cross Section
Solution - Print Preparation or Part Design
Troubleshooting
It is recommended that you review all the possible solutions before taking action to ensure you are pursuing the best course of action.
If the best course of action is not apparent, try the troubleshooting options in the order listed. Refer here for more tips.
Print Preparation or Part Design Adjustments
The following solutions will address print or part-related causes of the defects. Choose among the suggested actions below and select the best approach for your application. Usually only one type of adjustment is needed.
If problems persist, please reach out to Carbon Support.
Explanation & Causes
Explanation
- The process of polymerization produces heat as each slice cures.
- Slices cool after initial cure.
- Cooling rate is determined by cross section.
- When cross section changes due to a feature change in the geometry, cooling will occur at different rates where the geometry changes.
- Smaller cross sections cool more quickly than larger cross sections.
Causes
Print Preparation or Part Design
How the part is oriented, supported, or designed is causing the defect.
Root Issue | Problem | Why Defect Presents |
|---|---|---|
Cross Section | Cross section changes suddenly | Smaller cross sections cool more quickly than larger cross sections. When a sudden change in cross section occurs between slices, the change in cooling can manifest in a surface finish difference. |