Version 1, without display

cover … Top with control elements
bottom … bottom part
lid protection … optional rubber lip for the upper part (to be printed with TPU)
bottom protection … optional rubber lip for the bottom part (to be printed with TPU)

handgeraet.zip

Version 2, with display

handgeraet_deckel_dsp … top part with control elements
handgeraet_boden_dsp … Bottom part
handgeraet_rahmen_dsp … optional rubber lip for the upper part (to be printed with TPU)

handgeraet_dsp.zip

STL can be easily exported from the FreeCad files for further processing in the 3D slicer/printer.

If you export the front panel for an aluminum bezel you have to take into account that the holes are slightly larger (for the plastic housing). So you should adjust the holes to the actual size of the controls.