AO Metal is the Additive Plus line of LPBF metal 3D printers, designed and built in the USA. Three machines share one open architecture: every laser parameter belongs to the owner, with no cartridges and no annual licence. A test build costs grams of powder rather than kilograms. The A30 starts at $59,000 with a Ø30 × 60 mm build; the A50 and the A100 add an optional 445 nm blue laser and a 900 °C platform for copper, gold, silver and crack-prone alloys. Lead time 12–16 weeks.
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