Optical Lens for NEJE MASTER 30820, N40630, A40630 Laser engraving machine laser head replacement
21.66 $
All NEJE modules have a square spot after focusing. The actual effect of FAC technology can only reduce the divergence angle and increase the maximum cutting thickness. NEJE A40640, A40630, and A30130 all have FAC technology, but NEJE does not mark 40W, laser diode There is no difference between cutting 3-4mm plywood with FAC technology and without FAC technology.
If you are only engraving or cutting applications within 8mm, NEJE recommends N30820 20W, N40630 30W, F30130 are very good rotation, these 2 modules are Able to cut 3-4mm plywood through one pass with air asist. If you want to use 8-20mm cutting, you can choose A40630 and A30100 modules, if you have requirements for cutting efficiency, recommend A40640 40W module.
NEJE factory provides the process 48-hour temperature control aging test to ensure the quality of each module, and provide 2 years (20,000 hours) free warranty!
When do you need air assist?
Air-assisted engraving or cutting can only be used for engraving or cutting that produces more carbonized substances. Generally, the depth of engraving is less than 1mm, and the cutting of plywood less than 2mm does not require air assist. A small fan can be used to blow off the smoke generated by the engraving. Air assist is not recommended when engraving images, and adding air assist at this time will destroy image details.
What kind of air pump is suitable for cutting?
The main meaning of air assist is to blow off the carbonized material produced by cutting, and the general oxygener and electromagnetic inflator have almost no meaning. only the pressure of the oil pump and air compressor (0.4-1.5mPa) has the effect of blowing away the carbonized material. but it should be noted that the air of the oil pump contains oil and cannot be directly used for the air-assisted module of the closed cavity, otherwise the oil will contaminate the lens, resulting in power drop or damage to the lens. The air pressure of the air compressor can be used for a short time with the closed cavity, but When used for a long time, the water-containing gas will contaminate the lens, cause the power to drop, and even damage the lens.
About DIY kit
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