The right optics
Laser cutting wood is a sublimation process. Precise focusing and the choice of the right optics are therefore crucial. A distinction must be made between engraving and/or cutting. While engraving, pay attention to the following: The finer the details, the shorter the focal length of the lens should be. As a rule, 1.5" or 2.0" lenses are suitable for almost any laser engraving on wood. It is, however, different for cutting. Here the thickness of the material plays an important role. The thicker the material, the longer the focal length of the lens used. For 1/8 inch thick wood we recommend the use of a 2" lens, for 1/4 inch thick we recommend a 2.5" lens.
Further details of the right choice of lens