English: Image of the birch veneer’s surface with a hole shot with a 40W CO2 laser using scanning electron microscope Helons Nanolab 600 (FEI Company). While the hole appeared black to the naked eye, scanning electron microscopy can visualize the microstructure at the edges of the hole. For imaging, the veneer was pre-coated with a thin layer of platinum to prevent the surface from getting charged by the accelerated electrons. In the film technology laboratory of the Institute of Physics of the University of Tartu, various techniques are often used to study the interior of materials, which sometimes requires the production of a high-quality cut cross-sections. For smaller nanostructures, a focused ion beam is used for this purpose, but in this case it was more practical to use a CO2 laser. For better image visualization, various surfaces have been painted with image processing, where dark blue is the surface where veneer is attached to, brown is the wood itself, and light blue is the electron beam hole opening.