For a long time, the additive manufacturing (AM) of copper was a challenge. Due to the high thermal conductivity and reflectance in the infrared region, laser based AM techniques, like Laser Powder Bed Fusion (LPBF), were unable to efficiently process pure copper material. The absorption is increased significantly by using a green laser source. In addition, Binder Jetting recently showed remarkable progress in using copper with densities of over 95 %.
Copper is probably the most utilized material for efficient energy transfer. In combination with the advantages AM is known for, this will lead to improved and new applications in the future.