Neje 40W A40640 (15W output) laser module air assist nozzle
thingiverse
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
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