What is 3D Printing? A basic guide

Author
April 1, 2025
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9 min.
3D printing is a revolutionary technology that enables the creation of physical objects by building them layer by layer from a digital model. Unlike traditional methods where materials are cut or shaped, a 3D printer builds objects from scratch using materials like plastic, metal or resin. This process starts with a digital drawing, which is created in CAD software and divided into layers via slicer software, after which the printer builds the object in stages. The technology offers flexibility, precision and speed, making it ideal for prototyping, production and more.

3D printing is an advanced technology that makes it possible to manufacture physical objects by building them layer by layer. Instead of cutting or shaping materials as in traditional manufacturing methods, a 3D printer builds objects from scratch using a digital 3D model. This model is often created in a computer-aided design (CAD) program and is then transformed into a physical structure by layering materials like plastic, metal or resin.

How does 3D printing work?

The process begins with a 3D drawing that acts as a digital template. This file, typically in formats such as STL or OBJ, is sent to the printer via slicer software. This software divides the model into thin layers that the printer can build one at a time. Depending on the 3D printing technology used, the printer can melt or harden materials to form the desired object layer by layer.

The Three Most Common 3D Printing Technologies

  1. FDM (Fused Deposition Modeling): This method uses thermoplastic filaments that are heated and laid down in thin layers. It is one of the most common and affordable 3D printing technologies and is often used for hobby projects or prototypes.
  2. SLA (Stereolithography): SLA printers use a laser to cure liquid resin, resulting in very high precision and detail. This technology is often used for more complex and detailed prints
  3. SLS (Selective Laser Sintering): In SLS, powder material (such as plastic or metal) is melted using a laser. This technology is ideal for industrial applications as it can produce strong and durable parts.

Advantages of 3D Printing

  1. Flexibility: Easy to customize design on the fly.
  2. Cost-effective: Ideal for prototypes and small productions.
  3. Fast delivery: From idea to product in no time.

3D printing is applicable in many sectors, including healthcare, education and manufacturing. It has revolutionized the way we think about production and design and is a technology with endless possibilities.

Interested in learning more about what 3D printing can do for you?