The resulting customized body of the mask plus the filter and grid STL files were exported and 3D printed with polylactic acid (PLA) filament using a fused deposition modeling (FDM) 3D printer. The body of the mask was then edited to fit precisely into the face scan STL by using the software's offset tool, followed by adjustments and smoothening of the surfaces of the edges. The imported mask described in this article is composed of three different STL files (body, filter structure, and grid). The procedure of creating customized face masks initially involved importing and aligning STL files of face scans and mask components in free CAD software.
To describe a method of digitally customizing 3D-printed face mask designs using 3D face scans and free software.
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