CAT Theory Grade 11 Practice Test 2026 – Complete Exam Prep

3D printers convert digital designs into real, three-dimensional objects by building them layer by layer, an additive manufacturing process. This means you start with a CAD model or other digital file and turn it into a physical item, from prototypes to finished parts. Because of this, creating physical three-dimensional objects from designs is exactly what a 3D printer does. The other ideas aren’t the printer’s typical function: copying an existing object precisely would usually require scanning and modeling, and printing documents or two-dimensional drafts are tasks more associated with traditional 2D printers, not 3D printers.