Tradfri Switch Mount Cover for existing Switch

In search for not having someone to turn of the power to my Tradfri bulbs, I designed a little cover. This cover contains a washer disk that you can stuck a Tradfri Switch on. 

This cover works for a existing switch with 56mm high switch plate and about 0.7mm clearance to its case.

Printed in PLA with 100% infill and no supports in about an hour. 

Needs a 37mm washer disk that can be slid in the cover.