The video demonstrates one of the most commercialised powder bed fusion techniques of additive manufacturing, the Selective Laser Melting (SLM). Tool steel powder (Gas atomized ASP2023��) is processed using a a commercial SLM instrument (AconityMINI). During the SLM process, the powder is delivered to the pre-heated powder bed through the powder delivery system and then selectively melted using the laser beam in a chamber filled with argon (see attached figure about the chamber and the key parts of the process). The delivered powder particles are solidified to form layers, as the process continues until the desired three-dimensional component is fabricated.