---
title: Veining
slug: troubleshooting/veining
description: Discover effective solutions for addressing the "Veining" part defect from Carbon DLS printing. This comprehensive document explains how to identify, troubleshoot, and understand the root causes.
docTags:
createdAt: 2024-06-14T00:56:58.905Z
---
**Veining**
Organic ridges on part in the build direction.
# How to Identify
Veining can be diagnosed as follows:
- Ridges on part along the build direction (Z axis).
- Can be wandering or straight.
- May be wavy especially for larger, flat surfaces.
- This is an uncommon defect.
- An extreme form of this defect is called [Caping](docId\:bOSFTxf_qsCXLl9rrYeTn)
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**Cause** - Inconclusive
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**Cause** - Inconclusive
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**Cause** - Supports too close to surface
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# Troubleshooting
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It is recommended that you review all the possible solutions before taking action to ensure you are pursuing the best course of action.
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If the best course of action is not apparent, try the troubleshooting options in the order listed. Refer [here](docId\:pPm8gmeGCY_0fkFwgTCyj) 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.
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### Supports
- Adjust supports to allow more space between part and support.
- Adjust density of supports to allow for more resin flow
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### Layout
Increase padding to at least **5 mm.**
Reference [Layout](docId\:SJ39gtBagt0cSGVVlCfli)
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### Print Profile
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**Small Unvented Volumes**
*Available in software *[v1.46](docId\:M57IWulEuClyGcsBkFE62)
*and higher.*
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For use with prints where there is distortion or **extra cured resin** on the surface of critical features **inside holes**.
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Most commonly seen in analog or anterior **die holes in DPR 10**, but applicable to any application with similarly fitting parts like connectors.
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May also help with [Resin Starvation](docId:3EIqqQqCGKwU6QNgdR5Ox) in parts with large window-facing cross sections.
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**Default**
Print using the **Default** print profile instead of Dynamic to slow down the print. Reference [Print Profile](docId\:N9rCrE4j391HMxwvP-udG).
- Dynamic is a tool for **M1 and M2** printers.
- Force feedback (FFB) printers (M3, M3 Max, L1) will see minimal to no difference in print speed with the dynamic print profile, so this troubleshooting option is unlikely to help.
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### Print Plan Adjustments
Reference [Print Plan Adjustments](docId\:NxUK0dltz_vemEAU0DIpN) for guidance on the following parameters:
**4 Settle Down Stage**
- Delay Timing Parameters
- Minimum Pre-Exposure Delay
- Minimum Time Force Slope Down Settled
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If problems persist, please reach out to [Carbon Support](mailto\:support@carbon3d.com).
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# Explanation & Causes
## Explanation
- Parts, features and/or supports are too close together restricting resin flow.
- Slow moving resin heats up making it more susceptible to curing from stray UV light.
- This condition is magnified over time as resin heats up over the course of the build.
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## Causes
- Print Preparation or Part Design
- Print Plan Adjustments
### Print Preparation or Part Design
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How the part is **oriented**, **supported**, or **designed **is causing the defect.
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| **Root Issue** | **Problem** | **Why Defect Presents** |
| -------------- | --------------------------- | ----------------------------------------------------------------------------------------------------------------------------- |
| Supports | Over-supported | Parts that are over-supported provide less space for resin to flow properly throughout the build causing light to scatter. |
| Layout | Parts too dense on platform | Padding between parts is to small for resin to flow properly throughout the build causing light to scatter. |
| Print Profile | Print too fast in Dynamic | A shortened print gives less time for resin flow to all areas of the build causing light to scatter. *For M1 and M2 printers* |
### Print Plan Adjustments
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[Print Plan Adjustments](docId\:NxUK0dltz_vemEAU0DIpN) adjust the print plan to optimize mid to high volume production and/or address part defects.
In doing so, adjustment may both **prevent or cause defects**. Below are adjustments that can cause this defect.
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| **Printing Stage** | **Parameter**
**Type**
| **Type of Adjustment** | **Why Defect Presents** |
| ------------------ | --------------------------------- | ----------------------------------------- | ---------------------------------------------------------------------------------------------------------------- |
| 4 Settle Down | Delay Timing | **Decrease** | A shortened settle down stage gives less time for resin flow to all areas of the build causing light to scatter. |