**1. Introduction and Scope**

Although additive manufacturing is gaining prominence in the market, many applications require very high levels of precision, which are currently not attainable by additive manufacturing [1]. Consequently, research in the field of machining continues to be highly vigorous [2,3], as evolution can take place towards the use of hybrid manufacturing processes, which complement additive processes with subtractive processes [4]. Given that machining processes themselves have already been explored in terms of the phenomena to which they are related, as well as machining trajectories, the aspects related to sustainability, the tools used in advanced materials and the study of their wear phenomena have recently been deeply explored [5,6]. In fact, increasing tool life is a matter of economic and environmental sustainability, as it increases the useful machining time of each piece of equipment and reduces the ecological footprint, due to the lower rate of energy consumed and the reduced need to recycle worn-out tools. This Special Issue intends to bring together some of the best works conducted on machining published in 2022 and 2023. Specifically, it aims to provide comprehensive and in-depth reviews that enable new researchers to quickly and efficiently familiarize themselves with specific subjects. By compiling and presenting the results of numerous prior publications in a condensed and well-structured manner, this initiative facilitates access to a substantial amount of information within a short timeframe. However, the investigation of new coatings for tools and even the study of models for the quick budgeting of machining processes have also been taken into account in this Special Issue, which aims to constitute a very interesting piece of work for all those who investigate machining processes.
