Headrest Kopfhalter

My office chair is missing a headrest so I designed this one

Kopfhalter.stl needs to be printed with support the other two parts not.

Additional for the assembly you need:
4 woodscrews 2,5x20mm (not shure, over a year ago I made this thing)
1 hexbolt M5 + washer + nut

For assembly
-put one of the bolts into the hex-hole of Kopfhalter_Platte
-screw Kopfhalter_Platter onto Kopfhalter itself with the 4 woodscrews
-attach Kopfhalter_halter onto it and ready you are

As seen in the pictures, I used a bent wooden piece I got from the hardware store to attach it on the chair.

Don´t mind the cable tie, need it to hold my head back and not getting into bad habits again