Additive Manufacturing: Building One Layer at a Time

Written by: Phoebe May

What is additive manufacturing and why is it used?

Additive manufacturing (AM), sometimes referred to as 3D printing, is a way of making objects by adding material layer by layer. It is like drawing with a 3D pen except instead of ink, it can use plastic, metal, or ceramic.

AM is useful because it allows for customisation, intricate designs, quicker production and less material waste. This is because AM builds objects that are very close to the desired final shape (also known as ‘near net shape’), unlike traditional manufacturing, which often involves cutting away extra material.

Who uses additive manufacturing and what can it be used for?

Lots of industries rely on and use AM:

• Doctors use it to create prosthetics and implants.
• Engineers design and test new parts for machines.
• Aerospace companies make lightweight parts for planes and spacecraft.
• Automotive manufacturers print car parts quickly.
• Artists and designers create unique sculptures, fashion, and furniture.
• Even chefs are getting creative with printed chocolate and pasta.

What are the disadvantages?

AM is great but it does have some drawbacks:

• Can be expensive: high-quality 3D printers and materials cost a lot.
• Not fast for large production: making one object is quick, but printing thousands can be slow.
• Material limitations: not everything can be printed (yet).
• Quality issues: some 3D-printed objects can be weaker than traditionally made ones.

What is next for additive manufacturing?

AM is improving every day with scientists working on printing human organs, entire houses, and even tools for astronauts in space. As technology advances, we might soon be able to print anything we need, whenever we need it. So, whether you are thinking of building a rocket or printing a custom phone case, additive manufacturing is shaping the future, one layer at a time!

Check out our video about additive manufacturing  (this will open YouTube).