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· Slicer Shell Thickness vs. Model Shell Thickness
There are exceptions (different topic), but in general the slicer does not change the model but tries to calculate the toolpath in a way that it stays as close as possible to the given mesh geometry.
From the perspective of a slicer, a "wall" in the model always consists of two "shells": inner and outer shell. That's one of the reasons why it is so important that the model has to be "watertight" and must not contain any additional faces inside of solid walls.
Depending on the line width and the shell thickness the maximum number of "wall lines per shell" is calculated.
If the wall of the model is thinner than the two "shells", the line count is reduced and the whole wall is printed with a proper amount of "wall lines".
If the wall of the model is thicker than two times of the "shell thickness" the gap in between the "shells" will be printed as infill (or "gap fill" if the gap is small and if the according option is enabled).
You can always check the generated toolpath in the "Preview" before printing, that's the best opportunity to compare different settings visually (although... i guess you already know this).
Here comes Cura 5.9 and in this stable release we have lots of material and printer profiles for UltiMaker printers, including the newly released Sketch Sprint. Additionally, scarf seams have been introduced alongside even more print settings and improvements. Check out the rest of this article to find out the details on all of that and more
We are happy to announce the next evolution in the UltiMaker 3D printer lineup: the UltiMaker Factor 4 industrial-grade 3D printer, designed to take manufacturing to new levels of efficiency and reliability. Factor 4 is an end-to-end 3D printing solution for light industrial applications
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tinkergnome 929
There are exceptions (different topic), but in general the slicer does not change the model but tries to calculate the toolpath in a way that it stays as close as possible to the given mesh geometry.
From the perspective of a slicer, a "wall" in the model always consists of two "shells": inner and outer shell. That's one of the reasons why it is so important that the model has to be "watertight" and must not contain any additional faces inside of solid walls.
Depending on the line width and the shell thickness the maximum number of "wall lines per shell" is calculated.
You can always check the generated toolpath in the "Preview" before printing, that's the best opportunity to compare different settings visually (although... i guess you already know this).
Hope that helps!
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