Simple Explanation: 3D printing is a process of creating physical objects by layering materials based on a digital model, adding one layer at a time.
Practical Example: Using a 3D printer to create a small plastic toy or a customized phone case.
Advanced Explanation: 3D printing, also known as additive manufacturing, involves slicing a digital 3D model into thin layers and depositing materials layer by layer to build a three-dimensional object.