Which of these statements about 2D cutters is true?

The statement that 2D cutters use lasers to cut 2D objects is accurate. Laser cutting is a precise method that allows for intricate designs and clean edges when cutting through various 2D materials like paper, plastic, wood, and metal. This technology utilizes focused laser beams to melt, burn, or blow away material, resulting in a finely detailed cut.

In contrast, the other statements are not true in the context of 2D cutters. For instance, they are typically not designed to cut 3D objects effectively, as their primary function is to work with flat, two-dimensional materials. Additionally, operating a laser cutter often requires proper training to ensure safety and to understand the intricacies of the machine. It is also important to note that while laser cutters can work with a variety of materials, they are not universally compatible with all types; some materials can be hazardous or ineffective for laser cutting. Thus, the statement regarding lasers is the most accurate in this context.