You’ve likely heard of 3D printing—a revolutionary technology that has transformed the world of manufacturing. Over the past few years, 3D printing has grown rapidly in popularity, and at the core of our printers is Fused Deposition Modelling (FDM) technology. If you’re new to 3D printing, this guide will introduce you to the essential concepts and help you understand how it works.

3D printing, also known as additive manufacturing, is a process used to create three-dimensional objects from a digital design. While it may sound futuristic, the concept is simple: objects are built by stacking extremely thin layers of material on top of one another. Each layer represents a cross-section of the final object, and together they form a solid, three-dimensional structure.

 

How Does 3D Printing Work?

Now that you understand what 3D printing is, let’s look at how the process actually works. Every 3D print begins with a digital model of the object you want to create.

Specialised software is used to prepare this model for printing. The software allows you to adjust settings and then converts the design into a format the printer can understand. This conversion process, known as slicing, breaks the model into thousands of thin layers. These layers guide the printer in building the object accurately and with the desired level of detail.

There are several types of 3D printing technologies, but Fused Deposition Modelling (FDM) is the most widely used. While the technologies may differ, the basic working principle of most 3D printers remains similar.

In FDM printing, a thermoplastic filament is heated until it melts and is then extruded through a heated nozzle. The nozzle temperature is critical, as it directly affects layer quality and surface finish. The molten material is deposited in thin layers, one on top of the other, following the sliced design. Each layer cools and solidifies before the next is applied. The entire process takes place in a controlled environment to ensure consistent results.

 

3D Printing Compared to Traditional Manufacturing

Before 3D printing became widely available, manufacturing relied primarily on subtractive and formative methods. Subtractive manufacturing involves cutting or milling material away from a solid block, while formative manufacturing uses moulds to shape molten material.

3D printing differs fundamentally from these methods. Instead of removing or shaping material, it builds objects layer by layer, allowing for intricate designs and complex geometries that are difficult or impossible to achieve with traditional techniques.

 

Benefits of 3D Printing

3D printing is valued across industries for its versatility and efficiency. Some of its key advantages include:

• Sustainability: The process produces minimal waste and is generally more environmentally friendly than traditional manufacturing.
• Customisation: Designs can be easily modified, enabling highly personalised products.
• Reduced tooling: No additional moulds or specialised tools are required.
• Design freedom: Complex structures and detailed geometries can be produced with ease.

 

Fused Deposition Modelling (FDM)

FDM is a widely used 3D printing process and the technology behind our printers. Introduced in the 1990s, it has evolved into an industrial-grade manufacturing method that uses thermoplastic materials.

In this process, thermoplastic filament is melted and fed through a heated extruder. The material is deposited layer by layer, with each layer bonding to the one beneath it as it cools. Support structures may be required for overhanging parts, which can slow the process slightly. FDM is also known as Fused Filament Fabrication (FFF).

 

Applications of 3D Printing in Industry

The use of 3D printing continues to expand across industries, with an increasing number of products being manufactured using this technology each year. Common applications include prototyping, custom components, tooling, and end-use parts.

 

Additive Manufacturing Explained

3D printing and additive manufacturing refer to the same process. The term “additive manufacturing” is typically used in industrial and professional settings, while “3D printing” is more commonly used for smaller-scale or consumer applications. The process uses technologies such as FDM and materials including PLA, ABS, PETG, ASA, PC, TPU 95A, and more.

 

A Brief History of 3D Printing

3D printing was first developed in 1984 by Chuck Hull, who laid the foundation for additive manufacturing. The technology was commercialised in the 1990s and initially used for rapid prototyping in industries such as aerospace, healthcare, and engineering.

After the 2000s, advancements in materials, software, and hardware greatly expanded its capabilities. Today, 3D printing is used worldwide for both industrial production and consumer applications, and its popularity continues to grow as the technology evolves.