Module laser Neje A40640 40w good or not good

[kcny]

@dkj4linux

I dimensioned the air-assist nozzle to extend 15mm below the housing… therefore there is about 5-6mm between the nozzle tip and surface of the material when focused on the surface.

@dkj4linux,

Does your design hold true for the N40630 laser as well? It looks like from this NEJE video, they say stock is 20mm from housing to plate and then focus to 17mm:

NEJE N40630 Laser Module Cutting Test With Air Assist