Part Defects

Gouging

14min

Gouging
Bits of part break off during removal from platform.
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How to Identify
Chipping/Gouging can be diagnosed as follows:
Damaged area occurs where the part contacted the platform.
Occurs on elastomer resins.
﻿Chipping﻿ and Gouging﻿ are defects that arise from the same issue but one appears on rigids and the other on elastomers, respectively.
Cause - Inconclusive
Cause - Inconclusive
Troubleshooting
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Process 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.
For new platforms, the factory coating may make parts difficult to remove. Use acetone wipes or an acetone soaked blue towel to scrub off the coating.
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Release film reduces adhesion.
If you experience chipping or gouging due to over-adhesion, try printing the build using release film.
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Review standard procedure for removing parts from platform﻿.
Maintain scraper contact with platform at all times.
Proceed slowly.
Ensure the blade engages all areas of platform contact.
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.
Change the orientation to place a smaller cross section on the platform.
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Support the part off the platform. 
Supports will provide a smaller cross section on the platform
The scraper tool used to remove the part from the platform will not touch the part, protecting it from damage.
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Reference Print Plan Adjustments﻿ for guidance on the following parameters:
Refer to guidance for Over-adhesion.﻿
﻿5 Exposure Parameters﻿ 
To reduce adhesion
Exposure Timing Parameters
Base Exposure Multiplier
Brightlining Parameters
All four parameters must be specified
Brightline Interior Exposure Time
Brightline Exterior Exposure Time
Brightline Border Thickness Pixels
Brightline Outer Borders
If problems persist, please reach out to Carbon Support.
Explanation & Causes
Explanation
Part may be strongly adhered to the platform. Reference also Over-Adhesion﻿﻿
Poor removal technique.
Using scraper to pry part off platform. 
Not keeping scraper in contact with platform during removal.
Using too much force with deadblow hammer.
EPX is more susceptible to chipping due to brittleness.
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Causes
Post-Processing
How the part is handled in post-processing is causing the defect.
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Root Issue
Problem
Why Defect Presents
Platform Removal
Aggressive
Resins are delicate in the green state and require gentle handling.
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Root Issue
Problem
Why Defect Presents
Over-adhesion
Large cross section on the platform
More surface area to adhere the part to the platform at the higher base exposure levels.
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Root Issue
Problem
Why Defect Presents
Cleaning
Factory coating on platform
The factory coating on a new platform can lead to stronger adhesion. 
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Printing Stage
Parameter Type
Type of Adjustment
Why Defect Presents
5 Exposure
Exposure Timing
﻿Increase﻿
Adhesion is increased with more UV exposure
5 Exposure
Brightlining
﻿Increase﻿
Adhesion is increased with more UV exposure
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Root Issue	Problem	Why Defect Presents
Platform Removal	Aggressive	Resins are delicate in the green state and require gentle handling.

Root Issue	Problem	Why Defect Presents
Over-adhesion	Large cross section on the platform	More surface area to adhere the part to the platform at the higher base exposure levels.

Root Issue	Problem	Why Defect Presents
Cleaning	Factory coating on platform	The factory coating on a new platform can lead to stronger adhesion.

Printing Stage	Parameter Type	Type of Adjustment	Why Defect Presents
5 Exposure	Exposure Timing	Increase	Adhesion is increased with more UV exposure
5 Exposure	Brightlining	Increase	Adhesion is increased with more UV exposure

Fruit Skinning

Incomplete Lattice

Gouging

How to Identify

Troubleshooting

Process and Hardware Checks

Platform

Release Film

Process Technique

Print Preparation or Part Design Adjustments

Orientation

Supports

Print Plan Adjustments

Explanation & Causes

Explanation

Causes