Laser is slow, settings?


a month ago i purchased a 3018 GRBL Laser-CNC machine, i’ve read a lot about settings and tried (and failed) many times.

Now i am almost happy with the cut, fill and image-results, but i have the feeling, that it needs too much time.

Here are my settings from the console:

$0=10 $1=255 $2=0 $3=2 $4=0 $5=0 $6=0 $10=1 $11=0.010 $12=0.002 $13=0 $20=0 $21=0 $22=0 $23=0 $24=25.000 $25=500.000 $26=250 $27=1.000 $30=1000 $31=0 $32=1 $100=800.000 $101=800.000 $102=800.000 $110=2000.000 $111=2000.000 $112=600.000 $120=120.000 $121=120.000 $122=30.000 $130=200.000 $131=200.000 $132=200.000 ok I downloaded a Picture (just to show you the needed time) if i would engrave it in 50 x 88mm it would need nearly 22 minutes. i think that is really much. or isn't it? ![Cut settings|430x500, 75%](upload://xiLgG1bpPR0QIWFNRjRPaDtHHe4.jpeg) ![Time|690x369, 75%](upload://omt7Ymn2tAzmxdEJHKrFDZQD6xZ.jpeg) Best regards Simon

It seems like the picture upload doesnt go well,so here are my cut settings:
Power 32,5
Overscanning 0,5% (0,17mm)
Line Interval 0,1mm
254 DPI
Image mode Grayscale

We’re not sure why your pics are not showing up, but here they are for all to see:

50 x 88 mm, at 0.1mm lines, means the laser will draw 880 lines, with each line being 50mm long (roughly). That is 44,000 mm of total travel, at 2000 mm/min. 40,000 / 2,000 = 22. So, yes, 22 minutes. You have a laser mounted to a CNC driven by leadscrews - it will not be fast. :slight_smile:

Good Morning,
thank you very much for your quick answer!
that’s very bad :smile:
If I would buy a co2 laser, 40w (something like this: [sorry, is in german]), it could be much faster?
The description says, that it can move up to 500mm/s (30.000mm/min), but is it realistic?
And the most important: Could i use Lightburn with an engine like this?

Best Regards
Simon :blush:

LightBurn won’t support the board that comes stock in that machine, but it can be changed for one that is supported. Look at the Cohesion3D LaserBoard and Mini Gerbil from Awesome Tech for alternatives, or you could find a laser with a Ruida controller in it if you want the ‘luxury option’.

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.