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What is "3D printing" and how does it work?

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3D Printing Overview

3D printing is a process that uses computer-aided design, or CAD, to create objects layer by layer. 3D printing is commonly used in manufacturing and automotive industries, where tools and parts are made using 3D printers.

As the capabilities of 3D printing continue to grow, so does its value: By 2029, the 3D printing industry is estimated to reach a value of $84 billion. This growth means we are bound to interact with products — and even homes and buildings — made with 3D printing.

3D printing is also shaking up the healthcare industry. In 2020, the COVID-19 pandemic overwhelmed hospitals and increased the need for personal protective equipment. Many healthcare facilities turned to 3D printing to supply their staff with much-needed protective equipment, as well as the parts to fix their ventilators. Large corporations, startups and even high school students with 3D printers stepped up to the plate and answered the call. 3D printing will not only change how we make PPE and medical equipment, but also streamline prosthetics and implants.

Although 3D printing is not necessarily new, there are some who still wonder what 3D printing is and how it works. Here’s a guide to understanding 3D printing.

What Are 3D Printers?

In short, 3D printers use CAD to create 3D objects from a variety of materials, like molten plastic or powders. 3D printers can come in a variety of shapes and sizes ranging from equipment that can fit on a desk to large construction models used in the making of 3D-printed houses. There are three main types of 3D printers and each uses a slightly different method.

3D printers aren’t like those magical boxes in sci-fi shows. Rather, the printers  — which act somewhat similarly to traditional 2D inkjet printers — use a layering method to create the desired object. They work from the ground up and pile on layer after layer until the object looks exactly like it was envisioned.

Why Are 3D Printers Important to the Future? 

The flexibility, accuracy and speed of 3D printers make them a promising tool for the future of manufacturing. Today, many 3D printers are used for what is called rapid prototyping.

Companies all over the world now employ 3D printers to create their prototypes in a matter of hours, instead of wasting months of time and potentially millions of dollars in research and development. In fact, some businesses claim that 3D printers make the prototyping process 10 times faster and five times cheaper than the normal R&D processes.

3D printers can fill a role in virtually almost every industry. They’re not just being used for prototyping. Many 3D printers are being tasked with printing finished products. The construction industry is actually using this futuristic printing method to print complete homes. Schools all over the world are using 3D printers to bring hands-on learning to the classroom by printing off three-dimensional dinosaur bones and robotics pieces. The flexibility and adaptability of 3D printing technology makes it a game-changer for any industry.

How Do 3D Printers Work?

3D printing is part of the additive manufacturing family and uses similar methods to a traditional inkjet printer — albeit in 3D. Additive manufacturing describes the process of creating something in layers, adding material continuously until the final design is complete. This term most often refers to molding and 3D printing. 

It takes a combination of top-of-the-line software, powder-like materials and precision tools to create a three-dimensional object from scratch. Below are a few of the main steps 3D printers take to bring ideas to life.

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3D printing, also known as additive manufacturing, is a revolutionary technology that has transformed the way we create and produce physical objects. It is a process where a three-dimensional digital model is transformed into a tangible, physical object by building it up layer by layer.

The process of 3D printing typically begins with the creation of a digital 3D model using computer-aided design (CAD) software or 3D scanning technology. This digital model is then sliced into thin, horizontal layers, and the 3D printer uses this information to build the object, one layer at a time.

The 3D printer uses a variety of materials, such as plastic, metal, ceramic, or even biological materials, to create the object. The printer deposits these materials, layer by layer, following the digital instructions, until the final product is complete.

The key advantage of 3D printing is its ability to create complex, customized shapes and designs that would be difficult or impossible to produce using traditional manufacturing methods. This technology has applications in a wide range of industries, including engineering, healthcare, fashion, and even food production.

3D printing has the potential to revolutionize the way we design, manufacture, and distribute products, as it allows for on-demand production, reduced waste, and the ability to create personalized items. As the technology continues to evolve and become more accessible, it is likely that 3D printing will play an increasingly important role in shaping the future of manufacturing and product development.

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