HELP! NO POWER on Laser Cutting!

Hello everyone.
I think i cannot re-open an old thread (Laser no cut anymore, only engraving) so i try opening a brand new one.

I have a foxalien CNC/Laser Masuter Pro that i used both for mill/cutting and laser/engraving with a diode 20w laser. I didn’t use my laser module for a while, about 6/7 months until today when i try to laser cutting some nutcracker for my nephew to play.

After i reinstall the machine in lightburn and configure it i start the cutting process but with my surprise the laser cannot properly cut a 2mm thick sheet at a 280 mm/min at 80% of power as you can see in the photo attached.

I know for sure that laser can cut that material because the last time i used in march i made some test on the same exact material e you can see the results here.

So i try some more test and apparently i had some issues with the correct power (or any other regulation) of my laser because even with this other sheet of 3mm birch i had totally different results. In the first photo, made on last march, i can cut the wood, in the second one insteda, made today, i never be able to cut a single square. Actually i cut the one on the left, with 6, yes SIX, pass!!


This is more or less my setup, with air assist attached and this te $$ configuration

$$
$0=10
$1=255
$2=0
$3=0
$4=0
$5=0
$6=0
$10=115
$11=0.010
$12=0.002
$13=0
$20=0
$21=1
$22=1
$23=3
$24=25.000
$25=1000.000
$26=250
$27=3.000
$30=10000
$31=0
$32=1
$100=80.000
$101=80.000
$102=1600.000
$110=2000.000
$111=2000.000
$112=500.000
$120=300.000
$121=300.000
$122=30.000
$130=400.000
$131=400.000
$132=50.000

Anyone can help me please??
Thank you in advance!!

In Lightburn Device Settings set your S-Value max to match your $30. Yours is set at 10,000, make sure Lightburn matches.

They Match.

I also tried to put both at 1000 but the results it’s the same.

Well shoot. I was hoping that would be the issue.

I would clean the lens.
The cut seems a little wide like focus is off. You don’t have any Z offset on your cut layer do you.

No Z offset, i use a 30mm block to focuse the laser only!

Was I the only one who noticed?

How can an extra 0 interfere with proper power? :thinking:

Hi Kuth, i really don’t know, but i had the same suggestion (put s value to 10000) in a previous thread!!

The factory value for $30 in my machine is 10000, and i know that in Lightburn the S value must be the same to work at 100% of power.

For laser machines I am only familiar with two values ​​255 (if memory serves me right) and 1000. Beyond that I unfortunately can’t help much more at the moment.

Besides, there is another thing i don’t understand.
As you can see in the configuration i enable the laser when i’m framing with a 0.01% power.
Well when i start to frame or simply if i enable laser to set the zero work, the laser should only be visible and not engraving right??
Look closely at the nutcracker picture, you can clearly see the xy movement engraved on the wood!! why the laser engrave (0,01% of power) and not cut properly??