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- Additive manufacturing started in the 1980s when Chuck Hull invented a process called stereolithography, now known as 3D printing. He discovered the method, which used UV lasers to create 3D objects layer by layer, after becoming frustrated with the long production times of prototyping.
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What is additive manufacturing (AM)?
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What is additive manufacturing & how does it work?
The first additive manufacturing system appeared in the 1980s — from there, additive manufacturing has taken off, branching out into several different types of technologies for turning CAD files into 3D physical objects.
- What Is Additive Manufacturing?
- How It Works
- The Advantages of Additive Manufacturing
- Issues with Additive Manufacturing
- Additive Manufacturing Versus Conventional Manufacturing
- Possible Industries For Disruption
- 4-D Printing and Other Applications
- Ready to Go Deeper?
- The Expert
Additive manufacturing is the process of creating an object by building it one layer at a time. It is the opposite of subtractive manufacturing, in which an object is created by cutting away at a solid block of material until the final product is complete. Technically, additive manufacturing can refer to any process where a product is created by bu...
To create an object using additive manufacturing, someone must first create a design. This is typically done using computer aided design, or CAD, software, or by taking a scan of the object someone wants to print. Software then translates the design into a layer by layer framework for the additive manufacturing machine to follow. This is sent to th...
Additive manufacturing has some distinct benefits. With traditional manufacturing, the entire supply chain can take months and require an investment — sometimes millions or billions of dollars — that can only be recouped by high-volume production. With additive manufacturing, much of the supply chain’s intermediate steps are removed. “The speed at ...
Additive manufacturing has its share of challenges, too. Additive manufacturing machines are expensive, sometimes hundreds of thousands of dollars. Using them to create large lot sizes takes longer than with traditional manufacturing. And many objects that are additively manufactured require some post-processing to clean and smooth out rough edges,...
Despite all the advantages of additive manufacturing, “I don’t see traditional manufacturing being replaced,” said Roemer. That is because, aside from specific use cases, traditional manufacturing is still faster and less expensive. This is especially true when creating granular products. The smaller the layer size, the slower the manufacturing. Wh...
There are a few industries where 3-D printing parts or products makes more sense than manufacturing them traditionally. Aerospace, racecars, and the medical field are all industries where additive manufacturing can make inroads. That is because they are all industries where function is more important than price. Or where small lot sizes or customiz...
With typical additive manufacturing, machines build a 3-D object that is fixed. 4-D printing creates 3-D objects that have the ability to change or transform over time, without human interaction. There are several applications for 4-D printing. One is extreme environments, such as space, where self-configuring materials would be useful. Another is ...
Read “Getting Past the Hype About 3-D Printing” in MIT Sloan Management Review or “3-D Printing and Additive Manufacturing,” a peer-reviewed journal that covers the rapid changes to the field. Watch “An Introduction to Additive Manufacturing” from MIT professor John Hart and “The Emergence of 4-D Printing,” a Ted Talk by MIT assistant professor and...
Thomas Roemer is a senior lecturer at MIT Sloan in operations management and the executive director of MIT’s Leaders for Global Operations Program. He is interested in the intersection of engineering and management and the value creation during the design, manufacturing, and delivery of products. He has taught classes in operations management and s...
- Rebecca Linke
Jun 14, 2023 · In this comprehensive post, we will delve into the captivating history of Additive Manufacturing and explore the origins of its seven primary technologies. Each technology has its distinct path of development, contributing to the diverse landscape of 3D printing.
Additive manufacturing (AM), also known as three-dimensional (3D) printing, is a manufacturing methodology in which material is added to fabricate a 3D object as per CAD design instead of removing material to shape the object as performed in conventional manufacturing methodologies such as substractive machining.
Apr 23, 2024 · Various additive manufacturing technologies are explored, including material extrusion, VAT polymerization, material jetting, binder jetting, selective laser sintering, selective laser melting,...
Oct 7, 2022 · The history of additive manufacturing technology can be traced back to the 1980s when the first 3D printers were created. Since then, AM technology has undergone tremendous evolution, with new technologies and production processes being developed and commercialised.
Feb 17, 2023 · The ISO/ASTM 52900 standard (ISO/ASTM 52900 2015) defines additive manufacturing (AM) as “the technique of combining materials to build parts from the data of 3D model, generally layer by layer, in opposition to subtractive and formative manufacturing methodologies of production.”
