While it won’t go down as the most famous printing invention ever — Johannes Gutenberg’s creation seems likely to hold that title in perpetuity — few technologies in recent decades have been as developmentally groundbreaking as 3D printing.

Introduced in the 1980s and greatly refined over the last decade, 3D printing is a production method using advanced computer technology in which the composition of a material is altered then reshaped and molded to create a three-dimensional object.
Also known as additive manufacturing, 3D printing is a production method with strengths and weaknesses. It’s not a great way to make everything but it is a great way to make specific products ill-suited for mass production.