Laser air assist 33mm diode
thingiverse
450nm 5W Laser Engraving Module Blue Light With TTL Modulation https://banggood.app.link/Wv23VmzuCcb 6mm air hose fits. Pushed on and is also used as a simple focus wheel. i cut 3mm MDF in 2 pases with this air assist. It's simple and it works.
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