Used Cr_10 semi-circle as template.
Raised the Fan connecting end.
Made circle larger and moved it back towards base.
Centered the nozzle.
Tested and adjusted airflow.
For those who want a full circle, the one I have not stopped using since its final version is
For those who have tipped me a coffee, I offer back a huge thanks.
For those who wish to, I drink the cheap stuff.