Fits the specific WMF mill you can find at https://www.wmf.com/de/en/electric-mill-set-2-piece-3201000871.html

You may adapt this to other mills though with the attached OpenSCAD file.

I printed with PETG with 0.2mm layer height on 0.4 mm nozzle. No supports are needed and walls are so thin that infill is not used.