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Initial Layer Under Extrusion


randomdude583
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Posted · Initial Layer Under Extrusion

Using Cura 4.4.1

 

I am seeing a strange behavior, where my first layer severely under extrudes, just a thin, wispy layer that does not usually stick to the bed. I have my machine configured to print a line on the edge of the build plate first to prep the extruder, and this works excellent, but then the first layer fails right after that.

 

The really strange thing is that enabling a raft completely fixes the issue. First layer of rafts print perfect, and I dont have any issues. Using a brim or skirt has the same issues as printing without a raft. Any ideas why this would happen and what I can do to resolve it? I have attached my configuration settings.

 

Thanks!

curaProfile.curaprofile

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    Posted (edited) · Initial Layer Under Extrusion

    I am using Cura 4.10 but I am having this very same issue and it's most notable with TPU. The first layer is not printing correctly. 

    I am using totally default profiles for both.

    Screen capture 1, it's a brim and you can see it's got good solid connect to the build plate on the hexagons.

    Screen capture 2, it's a skirt and you can see that the PLA is now a single wall and TPU is just dots.

     

    Does anyone know why this happens?

    It seems like the first layer is being reduced in wall thickness, as you can see in the line color coding.

    PLA 1.PNG

    PLA with Brim

    PLA 2.PNG

    PLA with skirt

    TPU 1.PNG

    TPU with brim

    TPU 2.PNG

    TPU with skirt

    Edited by torymiddlebrooks
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