I made 4 versions for different focal length settings.You should use some rubber ring for sealing from the laser side (red circle on picture)
Air input diameter is 5.4mm
My air source - 2x CT-404 silent aquarium air pump https://s.click.aliexpress.com/e/_A5xOJI
Nozzle mounted on laser: https://www.youtube.com/watch?v=1_uj2vYmHmM
Step files: https://drive.google.com/drive/folders/149SZfH74vCJeP18MVcamqRjwQk5hhQL1?usp=sharing
| nozzle108mm.STL | 702.7KB | |
| nozzle15mm.STL | 716.4KB | |
| nozzle18mm.STL | 782.9KB | |
| nozzle20mm.STL | 773.3KB |
