“…After the complete success of the first [1], second [2,3], and third edition [4,5] of the Special Issues of the Manufacturing Engineering Society (SIMES), with a total of 118 contributions (94 in Materials and 24 in Applied Sciences) regarding emerging methods and technologies, the Special Issue of the Manufacturing Engineering Society-2021 (SIMES-2021) [6,7] was launched again as a joint issue of the same journals, Materials and Applied Sciences.…”