Basic Doorknob Rosette

We were missing a rosette for the inside doorknob of one of our closet doors.

I "designed" this basic rosette so that the handles don't flop about when opening and closing the door.

Pure function, not fancy :)

The outside is 45mm, inside edge 21mm, inside hole 18mm.

Tinkercad link if anyone wants to adjust for a different sized rosette:
https://www.tinkercad.com/things/2lv649g1PzM