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How to Avoid Layer Separation in Your 3D Prints

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Layer separation or delamination is an issue where the layers of your print fail to stick correctly, causing them to separate from each other, resulting in prints with visible gaps and horizontal cracks in between them. When it happens, the print becomes weak such that you can even easily pull the various layers apart, especially in severe cases. 

The issue can be caused by many factors, especially poor layer adhesion, using a wet filament, and not using the proper settings in your slicer, like layer height and speed. The issue can occur even in the best 3D printers, but thankfully, just like any other 3D printing issue, there are crucial things you need to do to fix the problem, and we have described it in detail below. 

1. Properly Configure Cooling System

If the layers cool at different rates, they can warp, especially at the edges, resulting in layer separation. Most printers have cooling fans that you can adjust the settings in one in the 3D slicer to help cool extruded layers. If you are using Cura, you can access the cooling settings in the Cooling section. The first thing you need to do is to ensure that you select the Enable Print Cooling box.

(Image credit: Tom’s Hardware)

You should also set the Fan speed to an appropriate value. For 3D printing filament like PLA, 100% is suitable for ensuring that the layers cool adequately. However, if you still face issues, you can reduce and see if it fixes the issue. ABS doesn’t need a cooling fan, and it’s better to turn it off or keep the fan speed low, as it can cause print failure. 


Layer separation or delamination is an issue where the layers of your print fail to stick correctly, causing them to separate from each other, resulting in prints with visible gaps and horizontal cracks in between them. When it happens, the print becomes weak such that you can even easily pull the various layers apart, especially in severe cases. 

The issue can be caused by many factors, especially poor layer adhesion, using a wet filament, and not using the proper settings in your slicer, like layer height and speed. The issue can occur even in the best 3D printers, but thankfully, just like any other 3D printing issue, there are crucial things you need to do to fix the problem, and we have described it in detail below. 

1. Properly Configure Cooling System

If the layers cool at different rates, they can warp, especially at the edges, resulting in layer separation. Most printers have cooling fans that you can adjust the settings in one in the 3D slicer to help cool extruded layers. If you are using Cura, you can access the cooling settings in the Cooling section. The first thing you need to do is to ensure that you select the Enable Print Cooling box.

(Image credit: Tom’s Hardware)

You should also set the Fan speed to an appropriate value. For 3D printing filament like PLA, 100% is suitable for ensuring that the layers cool adequately. However, if you still face issues, you can reduce and see if it fixes the issue. ABS doesn’t need a cooling fan, and it’s better to turn it off or keep the fan speed low, as it can cause print failure. 

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