Lightburn engraving

Hi! I use lightburn. I mastered the cutting of balsa but I can’t get things right for engraving.
Can anyone give me some advice please.

Every engraving artist, laser engraver and each piece of material can produce different effects. I recommend the Material test in Laser tools and work until you have the range of shades that you can use on the material that you are working with.

Expect to waste some perfectly good material while developing your settings.