Addireen has launched the XH-M350G-2HR, a green-laser copper powder bed fusion machine built around a 350 x 350 x 550 mm plate, and demonstrated it by printing around 400 pure-copper heat sinks for optical transceivers in a single build lasting about 140 hours. The parts covered the full plate and had thin walls, some under 0.5 mm, printed as single pieces rather than welded assemblies.
| Spec | Value |
|---|---|
| Build volume | 350 x 350 x 550 mm |
| Lasers | 2 x 500 W green (532 nm) standard, 2 x 1,000 W optional |
| Focused spot | 40-60 μm |
| Scanning speed | up to 8 m/s |
| Layer thickness | 20-120 μm |
| Weight | approx. 4 t |
| Price | on request |
At a 40 μm layer thickness, Addireen reports a pure-copper build rate up to 24.24 cm3/h, with the usual caveat that geometry, packing density and recoat time move that number. The company claims relative density up to 99.9%, thermal conductivity up to 400 W/(m·K), and electrical conductivity up to 101% IACS, developed across 30, 40 and 80 μm processes.
Addireen says a bidirectional, variable-speed recoater cuts non-exposure time by 48%. Per the company’s internal comparisons, a higher-power thicker-layer process lifts build efficiency by more than 50%, and revised purging and chamber sealing improve purging efficiency by 63%. Airflow is split into two layers to clear smoke without fogging the protective window, which Addireen says stays clean past 360 hours; the company reports the airflow coefficient of variation across the build area is down to 3%. Filling a plate with 400 near-identical parts is also a stress test for consistency, and Addireen reports within-build dimensional Cpk above 1.33 on this demonstration build, backed by its own logging of laser power, chamber oxygen and gas flow for traceability.
Pure copper absorbs 532 nm green light at roughly eight times the rate of near-infrared, which is why Addireen builds a dedicated green-laser system rather than adapting an infrared PBF machine. The XH-M350G series has logged more than 100,000 hours of printing, per the company. No price has been published; the machine is quote-only, and Addireen offers a parts-on-demand route through its AddireenNow platform as an alternative to buying the hardware.