Additive manufacturing (AM) has undergone rapid development in the past decade. Owing to its capacity to produce complex and functional parts in various industries, it has been recognized as a remarkable scientific and industrial technique. It is used to enhance weight-saving production and reduce the number of parts, with metal-based AM techniques in particular being recognized as the most promising AM techniques developed thus far. This is because of their high potential for direct production through the selective solidification of metal materials from three-dimensional, computer-aided design data. The medical, aerospace, and part molding industries are some of the many expected to reap particular benefit from the ability to produce high-quality models with reduced manufacturing costs and lead times.

The objective of this special issue is to collect recent research works focused on recent trends in AM. This issue includes 7 papers covering the following topics:

- Metal-based powder bed fusion using a laser beam (PBF-LB/M)

- Wire and arc-based AM (WAAM)

- Fused deposition modeling (FDM)

This special issue is expected to help readers understand the recent trends in AM, leading in turn to further research on AM.

We deeply appreciate the contributions of all authors and thank the reviewers for their incisive efforts.