Wood engraving
Laser engraving on the wood is quite distinctive and depends on each wood structure. However laser can affects all the types of wood. Also we can engrave on painted, varnished or stained wood. Usually engraving wood result:
The color of the engraving of oak, walnut, ash, bamboo becomes dark brown.
Almonds, black alder, mahogany, maple, cherry becomes brown or light brown color.