I’ll try to take a closer look at this today. One thing I’m noticing is that the line interval in RDWorks looks like it may be different from LightBurn. RDWorks has .05 mm line interval whereas LightBurn has .1 mm line interval.
Not sure if that would account for the difference.
However, I think the reason why RDWorks may not have done as well is because some of the cut settings were set at .05 mm and others were set at .1 mm. I think it might have otherwise been identical results.
I was testing on a plywood that doesn’t get great variation in darkness from power, however. So I’d consider these results inconclusive.
I’m curious why your results are so dramatically different.
From my eyes I can see 3 subtle shade variations. Darkest up to 200 mm/s. then medium up to 400… then lightest above that. RDWorks one is a little different but similar. But overall, very little difference.
Apparently my max speed is limited to 500 mm/s on the controller and I haven’t pursued going higher than that as yet.
I don’t think this wood takes a particularly dark burn so hard to really get any contrast.
For the materials I use, power or laser exposure time doesn’t offer much contrast difference in black levels on my CO2 laser. Generally, only the depth of the cut changes with more laser exposure. If I use defocusing techniques I can increase the number of shades available to me but this depends much on the material.
Other than that I use dithering techniques to simulate different black levels, however the darkest shade is never that dark.