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US company Sciaky has long had a role out of the limelight but close to the US defense community. The company’s Electron Beam Welding and Electron Beam Additive Manufacturing technologies have been used for satellites, in the Space Shuttle and on other NASA missions, as well as used by Lockheed Martin to make aerospace parts and to repair turbine blades for battle tanks. Now a Sciaky customer is using EBAM to make tanks of a different kind: fuel tanks for submarines. EBAM Electron Beam Welding is a metal 3D printing technology whereby a welding machine is put on a motion stage and 3D prints a part. The technology can 3D print on top of existing materials, essentially rejuvenating or repairing worn down parts. It can also be used to make some of the largest 3D printed metal parts in the world. EBAM (and similar technologies such as DED) can make parts