In this video I build and test an Ortur Laser Master 2 – 20W laser Engraver. The laser has an optic power output of 5.5W.
Buy on Aliexpress Ortur Laser Master 2 – 20W
Air assist bracket
1mm 3d printer nozzle
6mm brass tube
To fit the 3d printer nozzle, I enlarged the end of the brass tube and then screwed the printer nozzle into it.