US startup MatterWave released its metal 3D printing retrofit module Daedalus in November 2026. The module mounts at the build substrate of existing metal printers and applies mechanical vibration at a specific frequency and amplitude during melt pool solidification to control the metal crystal structure in real time. In its SME award submission, the company reported that early results show fatigue life improved by up to 10 times compared with conventionally printed parts. MatterWave is led by CEO and co-founder Alex Tiliță. The team initially tried to build its own metal 3D printer in Hong Kong and switched to the retrofit approach after relocating to the United States. Daedalus is essentially a stack of transducers, with vibration frequency customized to parameters such as the thermomechanical properties of each material, influencing crystal nucleation and arrangement as the melt pool solidifies. Because the module only needs to fit the build chamber dimensions, MatterWave says it can be adapted to almost any metal 3D printer, with the greatest benefits in melting-based processes such as laser powder bed fusion (LPBF) and directed energy deposition (DED). The company has installed Daedalus on an EOS M 290 and begun full qualification testing for Inconel 718, with contracts targeting the aerospace sector. Tiliță estimates that qualifying a metal additive process typically takes one to two years and costs about one million dollars or more, much of it driven by performance variation across different machines, geometries and even different locations on the same substrate. At the material level, MatterWave says the technology can reduce the brittleness and stress caused by carbon trapped in the crystal lattice of high-carbon steel, giving alloying elements time to diffuse out of the lattice. At the International Conference on Advanced Manufacturing (ICAM) in Orlando, potential customers showed interest in alloys such as 7075 aluminum, Hastelloy, Inconel 738, 939 and 247, and tool steels. Tiliță said the number of metal materials that can currently be 3D printed reliably is still very limited, while the industry has accumulated extensive knowledge about other alloys.