This is an adapter for Zemismart Zigbee 17mm tubular motor ZM16EL, to work with 32mm OD window blinds tube.
I've print them in PETG but PLA should work too.
The shim is necessary to fit in the motor grove at the cap. I've glued it up with SuperGlue, needs care not to glue itself to the motor adapter.
The drive gear is a bit loose fitting on the motor shaft, but I found the shaft dimensions can vary between motors. The slack doesn't affect the function.
The author marked this model as their own original creation.