Large surface laser engravings: De-focus the lens
When laser engraving larger surfaces, processing the job with the lens intentionally de-focused is typically better suited than while in-focus. Depending on the power of your specific laser machine as well as the graphic, set the Z offset to around 2 and 7 mm to achieve a more unified result. During this process, the laser avoids the grooves and the finished product will feature a much smoother surface. This is also where lens selection is integral and for large surfaces, we recommend using a lens with a larger focal length. Additionally, for intricate and fine details, such as a 4 point font, we suggest not using any Z offset.