It is best to use various types of knives with retractable blades for cutting floor coverings and floor coverings. The smallest is a wallpaper knife with a narrow one, a thin blade. The carpet knife is thicker and stiffer. All of these knives are not sharpened in the traditional way, all you need to do is dull the blade off the last segment with pliers (the blade is cut into oblique segments). Thanks to this, another part of the knife blade is introduced into the work, So it is still sufficiently sharp.
