Join Intech Group to learn about the concept, origin, principles and applications of 3D printing technology in the article below: .

What is 3D printing?

3D printing is an abbreviation for Three-Dimensional Printing or three-dimensional printing technology that allows the creation of real objects from digital models. In which, the image or product is created vividly, with depth, height and width like real objects. Widely used in modern graphics and manufacturing techniques, providing the ability to simulate and reproduce products in the clearest way.

What is 3D printing technology?

3D printing technology is the process of creating three-dimensional objects by adding layers of material according to data from a computer-aided design (CAD) model. Commonly used materials can be plastic, metal, ceramic powder, even biological or composite.

3D printers work on the principle of adding thin layers of material in succession, precisely controlled by software to create products with complex shapes, high precision and material savings.

3D printers work similarly to CT or MRI (magnetic resonance) scanners in medicine, but instead of just displaying images, they create real objects in the physical world.

The origin of 3D printing technology

3D printing technology appeared in the 1980s and the person who laid the foundation for this technology was Charles Hull, founder of 3D Systems Corporation, and also the inventor of the stereolithography (SLA) method, the world's first 3D printing technique.

At that time, owning a 3D printer was a luxury with prices ranging from 100,000 to 400,000 USD, making this technology only used in laboratories or large enterprises. However, today with the strong development of material science, digital technology and automation, the cost of producing 3D printers has decreased significantly, you can see products created by this technology such as children's toys, machine parts, dentures, phone cases or even architectural models and medical components.

Popular 3D printing technologies today

Depending on the materials used and the principle of product shaping, 3D printing technology is divided into three main groups as follows:

3D printing technology using flexible plastic and non-metallic materials

This is the most popular group of 3D printing technology today, applied in model design, rapid prototyping and manufacturing of civil products. Technologies in this group include:

• FDM (Fused Deposition Modeling): 3D printing technology uses molten plastic filaments (such as PLA, ABS) extruded through a nozzle to create layers.
• SLA (Stereolithography): uses a laser beam to shine on liquid plastic to solidify each layer, giving products with high precision and detail.
• SLS (Selective Laser Sintering): uses a laser beam to melt plastic powder or non-metallic powder to create shapes.

3D printing technology from metal materials

This group of technologies is used in heavy industries, precision mechanics and aerospace. Some typical technologies:

• DMLS (Direct Metal Laser Sintering) and SLM (Selective Laser Melting): use high-power lasers to melt or weld metal powder into solid shapes.
• EBM (Electron Beam Melting): use electron beams instead of lasers to create shapes, allowing the fabrication of complex metal parts with high precision.

3D printing technology using organic materials

This technology focuses on using biological and organic materials to create products in regenerative medicine, agriculture and food.

• 3D food printing: applied in the culinary industry, using organic materials such as chocolate, sugar, flour to create sophisticated dishes.
• 3D biological printing (Bioprinting): using living cells and biological materials to print human tissues, organs or skin.

How 3D printing works

3D printing technology works based on the principle of additive manufacturing, which is to create objects by building layers of material on top of each other until the final shape is completed. Below is the process of the technology:

Step 1: Modeling (3D Modeling)

Before printing, the product is designed in 3D model using software such as AutoCAD, SolidWorks, Blender or Fusion 360 to clearly determine the size, shape and structural details of the object to be printed.

Step 2: Slicing

After having a complete 3D model, the slicer software will divide the model into thin layers and this is the data for the 3D printer to perform the material addition process.

Step 3: Additive Manufacturing

The 3D printer starts working by printing each layer of material (plastic, metal, ceramic powder, or organic material) according to the design. The layers of material are stacked sequentially and precisely, gradually forming a complete three-dimensional object.

Step 4: Computer Control

The entire 3D printing process is automatically controlled by a computer through programming software, the printed product has high precision, low error rate and smooth surface, meeting the requirements of fields such as mechanics, medicine, aviation, or mold manufacturing industry.

Application of 3D printing technology in modern life and production

3D printing technology is applied in almost every field from fashion, medicine, mechanics, architecture to education, bringing about great advances in creativity and production.

Application in clothing, accessories and jewelry design

Typically, in the 2013 Victoria's Secret show, many unique accessories and jewelry models were completely crafted using 3D printing technology, bringing sophisticated and different beauty.

Famous designer Iris van Herpen once shared that, in the near future, people can use 3D scanners to measure their bodies and print perfectly fitting clothes in just a few hours.

Applications in medicine

Thanks to the combination of 3D scanners and biological materials, scientists have printed artificial limbs, teeth, bones and joints with high precision and flexible movement. In particular, the cost of producing these parts by 3D printing is only a few hundred USD, much lower than the traditional cost of thousands of USD.

Researchers are gradually testing 3D printing of human organs such as liver, heart or kidney using bioprinting technology that can perform functions almost equivalent to real organs, opening up new hope in future transplantation and medicine.

Application in component manufacturing

From simple details to complex mechanical structures, all can be created precisely thanks to 3D printers. What is special is that this technology also supports the repair and regeneration of damaged components. Users can easily reprint replacement parts with just a digital design (CAD) file. Currently, on platforms like Thingiverse, there are more than 2,500 replacement part designs available for many different types of devices and products.

Applications in food production

Thanks to breakthroughs in materials and programming, 3D food printing technology allows the creation of confectionery, chocolate, pasta or other delicately designed dishes that are still safe and edible.

At the Consumer Electronics Show (CES) in Las Vegas, 3D Systems introduced a 3D printer that uses ingredients such as chocolate, sugar and vanilla to create a series of attractive desserts.

Applications in construction

Instead of using workers and heavy machinery, businesses can now print entire housing structures using special materials, saving time and costs.

For example, a construction company used a giant 3D printer to create 10 houses in just 24 hours. This process uses a mixture of cement and concrete substitutes, helping to create a complete house at a cost of only about 5,000 USD. Although the initial size is limited, this is the beginning of an era of automated construction using 3D printing.

3D printing technology trends: The future of manufacturing and innovation

3D printing technology is opening a new era for the global manufacturing industry. What makes 3D printing powerful is the ability to personalize products, shorten production time and optimize material sources, in line with the trend of automation and smart manufacturing in the 4.0 era.

Intech Group is a pioneer in the field of automation and smart manufacturing solutions, constantly researching and applying modern technologies such as 3D printing, industrial robots and smart manufacturing management systems (MES, ERP). For any questions, please contact hotline 0966.966.032 - 0983.113.387 for advice and support.