Ok my dip is on 5 , lens has been cleaned and still dont have cut though at 2 .2 mm/sec. Speed and 100% power at 8 passes with 1mm step down wach pass.
What should I check because something is still not right? Any help is appreciated.
Design in lightburn and laser though gsender with sienci laser.
Thanks in advance
They are the same in lightburn
Haven’t tried just LB usually send though gsender
@Ssuthe5567 Are you setting Smax in LB to 255?
Are you using the laser module in gSender? If so, check what the “laser power”/“max power” is set to. I don’t use this setting in gS, but in my installation the max power is set to 100. I believe that is the default. If your installation says the same thing and you have set sMax in LB to 255, you have a mismatch. Your gcode will be written assuming $30 is set to 255 since that is what you set in LB. However, your actual $30 setting will be 100.
If you are setting Smax to the same value as the max power in gSender, ignore all this. 
They are the same. however is there a difference in gsender edge and gs i know edge is a test program when they add new things to test before adding to gsender but edge had same settings as GS
@Ssuthe5567 If Edge has the same settings as gS, there should be no performance difference. Post your gcode if you like and I and others can see if anything jumps out. If I were you, since you designed this in LB, I would simply cut it in LB. If that works, then you know the issue is something going on between LB and gS.
I assume that you have focused the laser??
Not sure if this will help but I would not use that much step down each pass. What I do for a step down is divide the thickness of the material by the number of passes to calculate the Z step down. So 0.375mm in your stated case of 3mm material at 8 passes. That should help to maintain the proper focal length from the material. Just a thought and it maybe it is not what is causing your problem but the way I see it on the eighth pass you are at least 5mm out of focus.