[metalworkz]

I think the air flow from the nozzle will basically keep the path around the nozzle clear of the swarf. Perhaps as you mentioned a section of the nozzle could be removed and the airflow directed to blow the swarf out through the section that is removed. This way the nozzle will still have a good sized base to ride on the material and the swarf can exit through the cutout via the air pressure? It will also flow over the bit and help remove swarf that clings to the bit while cooling the tool.

Regards,