The document discusses 2D and 3D cutters. It explains that 2D cutters can cut materials like thin metals and wood into 2D shapes along the x and y axes, while 3D cutters can cut materials into more complex 3D shapes along the x, y, and z axes. It provides examples of materials that can be cut, such as glass, crystal, metal, polymer, and wood. The document also discusses how laser cutters work by using a high-powered laser beam to make precise cuts in materials.