Today's global militaries have a heavy dependence on support staff and supply chains, as reflected in the tooth-to-tail ratio (TTR), which measures the ratio of combat fighters to support personnel. For context, the US Army had a TTR of 1:2 during WWI, but today, that ratio has grown to 1:10, meaning the vast majority of personnel play a support role.

This shift is largely due to advanced weapon systems and technologies that require fewer combatants but demand extensive maintenance from trained technicians. Beyond military personnel, private industry also provides significant support in the development, manufacturing, upgrading, and maintenance of these sophisticated technologies.

Given the critical focus on research and development, manufacturing, maintenance, and logistics, UltiMaker 3D printers have become indispensable in defense applications. This guide will outline some of the most common uses of 3D printing in military and defense, highlight why 3D printing is a compelling technology in these sectors, and discuss how 3D printers are typically procured.

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Royal Netherlands Air Force - photo courtesy of UltiMaker
Royal Netherlands Air Force - photo courtesy of UltiMaker