After initial commercialisation in the 1990s, 3D printing metals has witnessed a flurry of interest in recent years. Key players have been quick to capitalise on this demand, enjoying exponential revenue growth since 2013 as a result. The expiration of several key powder bed fusion patents in 2016 will almost certainly drive down printer prices, which, combined with market consolidation in the form of a number of high profile acquisitions, suggests this emerging technology is now showing signs of maturity. However, at this stage it would be a mistake to underestimate the enormous potential for innovation in 3D printing of metals. In 2017, several companies launched new printer technologies with the promise of overcoming some of the existing barriers to adoption, such as lower printer prices, faster build speeds, cheaper materials, and more. Increasing throughput and streamlining production efficiencies will drive demand growth for printers and materials substantially. Given these market trends, IDTechEx forecasts that the global market for 3D printing metals will reach a value of $12 billion by the year 2028.