Hello, my name is Constantine and I am new to engraving hobby. I have a Neje 3 Plus laser which I used up to now with the simple Neje Software provided by the manufacturer.
I decided to try Light burn for better but I had some issues.
First the Light Burn didn’t recognize the device. So I had to open Neje software and when closing the software, chose the option “Quit and switch the laser in to GRBL Mode”. After that Light Burn found the Laser.
But the problem that I need your help is that via Light Burn I get no laser power. I choose the icon I want to engrave and even on 100% power the laser does not engrave.
f.e. I used plastic that with neje software I could cut it with 30% power but in Light Burn even with 100% there is not even a mark on it. It is just like shining it a flashlight on it.
Am I doing something wrong, or do I have to change settings on software?
The machine was working correctly immediately before switching to Lightburn and no mechanical or wiring changes or adjustments were made since then? If you switch back to the Neje software does it still work?
Can you verify shape properties>power scale is 100%?
Also confirm focus is correct (at least the same as before)?
The laser is visible, correct? Just not at desired intensity? Using the “fire” button in the move window, can you manually turn the laser off and on? Using the power percent just to the left, can you adjust the power up and down? Using proper safety glasses, you should be able to see the laser at around 1% and it should get brighter with every % increase in power.
Yes, if i use neje software it works fine every time i use it.
Also the focus is correct as much i can see.
And the laser is visible. Using the FIRE button I can see it diming +% & -% when I adjust it. Also on & off via FIRE Button.
I’m not a professional at this, but your $$ reply looks reasonable to me. Some of the options are unknown to me, but I don’t think they affect laser module funtion.
Have you ever attempted to run a material test? This may help rule out settings problems.
I used the file you send me. It didn’t engrave it on plastic (barely scratch it) but at 60% power it “engrave” it on cardboard. It should have burn the cardboard but it barely cut the upper layer. The only place that cut the board was the center of the cycle because it passed many times. I will send photos on weekend
These are the results i told you about.
As you see the plastic is almost intact. But if i use Neje Software with 40% power it will cut the plastic like butter.
And in Neje Software cardboard was on fire at 30% power
I’ve reviewed the g-code and I don’t see anything fundamentally wrong.
At this point there are really only two likely possible explanations:
You are using different settings between Neje software and LightBurn. In the file you were using 2000 mm/min at 60% power. Does this match what you did on Neje? Pay particular attention to the speed and units.
A firmware issue is limiting power or otherwise creating an issue in the output. You may want to check to see if there’s an updated firmware available. Can you confirm that the dimensions for objects burned look like the correct size?
