 Additive manufacturing, AM, also known as 3D printing, has revolutionized the way we make things. AM allows us to create complex shapes and structures that were previously impossible with traditional manufacturing methods. One such method is wire arc additive manufacturing, WAAM. It is capable of producing large metal parts at high deposition rates, making it ideal for industrial applications. Research into WAAM has been ongoing since its introduction, and many advances have been made in terms of process development, material selection and post-processing. Additionally, there has been much progress in the area of certification and non-destructive testing. Despite these advances, there is still room for improvement, particularly in terms of part quality and reliability. Overall, WAAM is a promising technology with great potential for industrial applications. This article was authored by Thiago A. Rodriguez, V. Duarte, R. M. Miranda and others. We are article.tv, links in the description below.