About this 3D model

This is a air assist for the china laser known as k40. It works with a direct mounted fan, which can be connected to the 5V output of the power supply. It comes with integrated brim and doesn't need any support to print. It is designed for the well known radial cooling fans that are used for 3d printers.Use M3 screws to mount the fan and to mount the nozzle to the laser head.Disadvantageous actually is only, air of environment is sucked in, instead of fresh air from outside.