Infill modifiers, or infill masks as I like to call them, change the type and density of the infill on your printed parts. This allows you to use 100% infill where needed, while saving weight elsewhere. I’ll show you how to do this in Prusa Slicer and Ultimaker Cura.
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https://www.youtube.com/watch?v=0dCfmr7sQvw
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