3D Printing, formally known as Additive Manufacturing (AM), is a revolutionary technology that builds physical objects from digital designs layer by layer. Unlike traditional subtractive methods that carve out a part from a larger block of material, 3D printing adds material only where needed, minimizing waste and enabling the creation of complex geometries that were previously impossible or too expensive to manufacture.

How Does It Work?
The process always starts with a 3D digital model, typically created in a CAD (Computer-Aided Design) software or via 3D scanning. This model is then "sliced" by specialized software into hundreds or thousands of thin horizontal layers. This sliced file guides the 3D printer, which deposits or solidifies material one layer at a time, faithfully building the object from the bottom up until the physical part is complete.

Common 3D Printing Technologies:

• FDM (Fused Deposition Modeling): The most common and affordable technology. It works by extruding a thermoplastic filament through a heated nozzle, melting it and depositing it layer by layer.

• SLA (Stereolithography): Uses a laser to cure and solidify liquid resin into a hardened plastic. It is known for producing parts with high detail and smooth surface finishes.

• SLS (Selective Laser Sintering): Uses a laser to fuse small particles of polymer powder together. It is popular for functional prototypes and end-use parts as it doesn't require support structures.

From rapid prototyping to custom medical implants, 3D printing is a cornerstone of modern innovation, democratizing manufacturing and pushing the boundaries of design.