--- title: Fruit Skinning slug: troubleshooting/fruit-skinning description: Discover effective solutions for addressing the "Fruit Skinning" part defect from Carbon DLS printing. This comprehensive document explains how to identify, troubleshoot, and understand the root causes. docTags: createdAt: 2024-06-14T01:02:25.254Z --- ::::VerticalSplit{layout="left"} :::VerticalSplitItem **Fruit Skinning** Dimpled, rough surface on parts. ::: :::VerticalSplitItem ::Image[]{src="https://api.archbee.com/api/optimize/3CesIL2dYMCHPZvRjp8S0/xV31tVpd-gjsaPhohJHf2_image.png" size="76" width="1080" height="1080" position="center" alt="Fruit Skinning" showCaption="false"} ::: :::: # How to Identify Fruit Skinning can be diagnosed as follows: - The surface finish appears dimpled like the surface of a citrus fruit. ::::LinkArray :::LinkArrayItem{headerType="IMAGE" headerImage="https://api.archbee.com/api/optimize/Nvx7WdIjE2XFpMaBlbCES-pJspTZcDK5HuJbnDaVaKn-20240729-214307.jpg"} **Cause** - Inconclusive ::: :::LinkArrayItem{headerType="IMAGE" headerImage="https://api.archbee.com/api/optimize/Nvx7WdIjE2XFpMaBlbCES-tb9rXt_hY9Y3NrZBuj_in-20240729-214318.png"} **Cause** - Inconclusive ::: :::LinkArrayItem{headerType="IMAGE" headerImage="https://api.archbee.com/api/optimize/Nvx7WdIjE2XFpMaBlbCES-Wrr6cQnVGm4xFtWGTQDrD-20240729-214331.jpg"} **Cause** - Inconclusive ::: :::: # Troubleshooting :::hint{type="info"} 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](docId\:pPm8gmeGCY_0fkFwgTCyj) for more tips. ## Process, Material, and Hardware Checks If any of these conditions apply to your print, take the corrective action and reprint to see if the problem is resolved. :::ExpandableHeading ### Resin - Ensure all **two-part resin** prints are completed within the resin's **pot-life.** - Check the **expiration date** of your resin lot. ![Resin](https://api.archbee.com/api/optimize/3CesIL2dYMCHPZvRjp8S0/C1-VhVYPYt7mA65fKiZKc_image.png) ::: ## 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. :::::ExpandableHeading ### Orientation ::::VerticalSplit{layout="middle"} :::VerticalSplitItem Reorient parts printed with two-part resins to shorten the print time and stay within the resin's pot life. ::: :::VerticalSplitItem ![Orientation](https://api.archbee.com/api/optimize/3CesIL2dYMCHPZvRjp8S0/eLDki_Lq7wkf1KR4aYmGR_image.png) ::: :::: ::::: :::ExpandableHeading ### Print Plan Adjustments Reference [Print Plan Adjustments](docId\:NxUK0dltz_vemEAU0DIpN) for guidance on the following parameters: [5 Exposure Parameters](docId\:nunXRrM4bWbawUQk0FrDt) - Exposure Timing ::: :::hint{type="info"} If problems persist, please reach out to [Carbon Support](mailto\:support@carbon3d.com). ::: # Explanation & Causes ## Explanation The part is not receiving enough UV exposure and is under-curing ## Causes ### Print Preparation or Part Design ::::VerticalSplit{layout="middle"} :::VerticalSplitItem How the part is **oriented**, **supported**, or **designed **is causing the defect. ::: :::VerticalSplitItem ![Print Preparation or Part Design Cause](https://api.archbee.com/api/optimize/3CesIL2dYMCHPZvRjp8S0/LhaBjVT_Yxhp03FPtHLyF_orient-and-support-quick-view-v0101-xxs.gif) ::: :::: | Root Issue | Problem | Why Defect Presents | | ----------- | --------------- | ---------------------------------------------------------------------------------------------------------- | | Orientation | Long print time | Two-part resins at the end of their pot life may be under-exposed due to the resin's change in properties. | ### Resin ::::VerticalSplit{layout="middle"} :::VerticalSplitItem The printing material is **expired**, beyond the printing range in its **pot-life**, or has been **improperly mixed**, causing abnormalities in the print. ::: :::VerticalSplitItem ![Resin](https://api.archbee.com/api/optimize/3CesIL2dYMCHPZvRjp8S0/XGHMl6juLeAliKkQ8uIOF_resins-hero-image-v2.jpg) ::: :::: | Root Issue | Problem | Why Defect Presents | | ---------- | ------- | ------------------------------------------- | | Expired | | The resin may not cure properly if expired. | ### Print Plan Adjustments ::::VerticalSplit{layout="middle"} :::VerticalSplitItem ![Print Plan Adjustments](https://api.archbee.com/api/optimize/3CesIL2dYMCHPZvRjp8S0/BzaP59syjyUMWREOHSLmE_print-plan-adjustments-v142.png) ::: :::VerticalSplitItem [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. ::: :::: | Printing Stage | Parameter Type | Type of Adjustment | Why Defect Presents | | -------------- | --------------- | ----------------------------------------- | -------------------------------------------------------- | | 5 Exposure | Exposure Timing | **Decrease** | Decreasing UV exposure can cause the part to under-cure. |