Simple 80mm fan grille

This is a very simple fan grille that makes use of some advanced feature of Slic3r to use the infill pattern as a functional part of the print. The downloadable STL's won't be sufficient to replicate the print, but unfortunately there's no option in Slic3r to export the arrangement used as a project*. See the "how I designed this" section for more details.

(*) Slic3r allows to export the whole plate as an AMF file, that will store the modifier and its options as metadata, so I have added to t