Technology Review interview on metal 3D printing (2016)

Tom uses a media-interview question as the spine for a full lecture on why metals resist 3D printing — mechanical (volume change, residual stress), surface (oxidation, surface tension), and heat-transfer reasons — and his own Navy electron-beam proposal as the would-be solution. ## Cases referenced

They came to me and said, we'd like to interview you on why there is no 3D printing of metals. That was the question.