K40 Chinese 40w laser air assist nozzle

This thing is my personal approach to an air assist on the K40 laser system. In looking at other designs I did not want to have to choose between keeping the smoke off of the lens or having a "proper" air assist. I have created this part so that most of the air is directed through the air assist, while there is a bleed into the lens area to give enough pressure to keep smoke off the lens. This may not be the greatest solution of them all, but I know it works well for me. Thank you for taking the