This is a rework of my own model from thingiverse (from 2012).
“cyclone to catch the spray while purging/cleaning an airbrush.”
There may be some sputtering especially with airbrush nozzles bigger than 0.2mm.
Prints without supports, a filament/profile with no stringing is recommended. There is now no easy way to remove any stringing from the internal cavity.
Version 2.1:
The author remixed this model.
These are some redesigns that were not possible back then. This version is now one piece. The old version had to be 2 parts to remove stringing.
This cyclone has a thread to screw on PET-Bottles. Thanks to: https://github.com/BelfrySCAD/BOSL2