Now I know what ablate means and how CO2 lasers on youtube don’t create char marks like our diode lasers.
Kalmdown,
If you are using the 1600mw laser like I do, on cardstock, I would be using 400mm/min and 100% power.
Yours looks like just plain thin paper, which might work with even faster speed.
Did you run a test grid on it? That will let you know what is a good speed/power ratio.
I always try to go 100% and as fast as possible if the results are good.
As you can see from my test, 100% Power at 500mm/min I still have a hanging chad, but at 400mm/min a clean cut. from 80-100% Power. So maybe 450mm/min would even work.
Here is my file for test grid
Test 4-Lines Cuts Grid.nc (151.7 KB)
Keep your protected eye’s on it at the lower speeds, you don’t want to catch your paper on fire.
Lastly, if you paper was not perfectly flat, and areas of it are bubbled up, you will get incomplete cut lines as well.