This sounds like a fiber?
Have you spent a few minutes and watched the Laser Everything video on photoengraving. Just the interval information alone is worth the time…
It’s also done on a fiber… I think it will help you out a lot.
The pass through options uses the image as is. This is usually used when the interval or dot pattern are in the source file and you do not want Lightburn to apply a new fill or interval to an existing one…
Check out one of the masters here…
Good luck
