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Weird behavior about wall


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Posted · Weird behavior about wall

Hi,

I was creating small models to test if my printer is able to replicate very small details.

 

I had tried to print a very simple grid, but I get an expected behavior. The bars are equally spaced, so empty spaces and bars have the same width. I don't get why the model on the right (0.5mm) doesn't get properly sliced. My line width is set to 0.4, so I don't think that "thin wall" matter. "Compensate inner/outer" wall doesn't change the behavior. I attach the 3mf so all the parameters are available.

 

117922874_Immagine2021-02-14092841.thumb.png.8261e5baf1516836f2d05c4471fe7294.png

 

I have attached the models.

test righe 0.5.stl test righe 0.6.stl CE3_test righe 0.6.3mf

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    Posted · Weird behavior about wall
    1 hour ago, Fabiuz said:

    I don't get why the model on the right (0.5mm) doesn't get properly sliced. My line width is set to 0.4, so I don't think that "thin wall" matter.

     

    Cura does not generate "single line walls" - it never has. If you look closely on the bars on the left, you'll see two wall lines. Cura automatically reduces the linewidth, but only to a certain degree (max. 3/4 of the configured linewidth). That's why 0.6mm works even with a 0.4mm nozzle (two 0.3mm lines), but 0.5mm not anymore.

     

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    Posted · Weird behavior about wall

    Ok thanks for the answer! I can imagine such behavior but I didn't found any documentation about "automatic" line shrinking. 

     

    However I don't understand why Cura prints the external vertical bars of the model on the right side. All those vertical bars are 0.5mm.

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    Posted · Weird behavior about wall
    22 hours ago, tinkergnome said:

     

    Cura does not generate "single line walls" - it never has. If you look closely on the bars on the left, you'll see two wall lines. Cura automatically reduces the linewidth, but only to a certain degree (max. 3/4 of the configured linewidth). That's why 0.6mm works even with a 0.4mm nozzle (two 0.3mm lines), but 0.5mm not anymore.

     

    Not entirely true; The Arachne build does.

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    Posted · Weird behavior about wall
    13 minutes ago, Fabiuz said:

    Is Arachne engine part of Cura v4.8?

    No, there is a special build that contains an experimental version of CuraEngine. It is not quite Cura 4.8, but closely related to it.

     

    See this thread:

     

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    Posted · Weird behavior about wall

    Ok thank you, I will take a look!

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