HOW DOES 3D PRINTING WORK?
3D printing, also called additive manufacturing, is a process of creating three-dimensional objects layer by layer from a digital design. Here’s how it works step by step:
🖥 1. Design the Model
A 3D model is created using Computer-Aided Design (CAD) software or downloaded from online libraries.
The design file is saved in a format like .STL or .OBJ.
🪡 2. Slicing the Model
The 3D model is imported into slicing software, which cuts the model into thin horizontal layers.
The slicer also generates instructions, called G-code, that tell the printer exactly where and how to move.
🖨 3. Printing the Object
The 3D printer reads the G-code and starts building the object layer by layer.
Fused Deposition Modeling (FDM), the most common method, melts plastic filament and extrudes it through a heated nozzle. Other methods include:
Stereolithography (SLA): Uses UV light to harden liquid resin.
Selective Laser Sintering (SLS): Uses a laser to fuse powdered material.
🔧 4. Layer-by-Layer Construction
Each layer is deposited or cured on top of the previous one, bonding together until the full shape is formed.
The printer bed or the nozzle may move in the X, Y, and Z directions to achieve the final structure.
✨ 5. Post-Processing
The finished print may need cleaning, curing, sanding, or painting for a smooth and polished look.
📦 Applications of 3D Printing
● Prototyping and Manufacturing: Engineers
● create prototypes quickly and cheaply.
●Medicine: Prosthetics, implants, and even bio-printing tissues.
●Education and Art: Students and artists bring creative projects to life.
● Construction: Large-scale printers build houses and bridges.
🌱 Advantages
● Customisation of designs.
●Reduced waste compared to traditional manufacturing.
● Faster production for small batches or unique items.
