Each of these chapters of manufacturing innovation upended the established economics of production, to a greater or lesser extent, leading to significant impacts on the prices of goods, the dynamics of supply chains, business models and labour market conditions. The time and cost-savings that resulted from Ford’s production line, for instance, enabled the company to slash the price of its cars, and pay wages that were unheard of elsewhere in the industry.1 This, in turn, enabled newly enriched factory workers to participate in the growing economy as consumers in their own right.
Today, additive manufacturing (AM) technologies have the potential to create another wave of disruptive economic change. Broadly known as 3D printing, the technologies and techniques under this umbrella have been in development since the late 1980s, and have already found a number of uses in mainstream manufacturing, particularly in the medical, automotive and aerospace industries. Instead of creating objects by cutting away at raw materials, or injecting plastic or metal into pre-made moulds, AM methods deposit material layer by layer. The technology has proved popular in the first instance for prototyping, but bears some promise to make industrial manufacturing more efficient by using fewer resources while making it easier and cheaper to build complex and custom one-off designs. Backers of the machines and techno-optimists herald nothing less than a revolution in manufacturing.
Adoption of AM is still, however, at an early stage. Sales of 3D-printed components have grown at a rate in excess of 25% per year since 1989, but still make up a small proportion of global manufacturing output. According to analysis from Wohlers Associates, a consulting firm and industry observer, AM accounted for less than a tenth of 1% of total manufacturing output in 2017.