This book presents research and findings in the field of manufacturing engineering, technologies and innovative approaches to process improvements. It features selected papers presented at 12th Brazilian Manufacturing Engineering Congress held on 10-12 of May of 2023 in Brasília, DF, Brazil. The book provides valuable insights and information to academic researchers, practicing engineers, or students just starting out in the field of manufacturing engineering. The Chapters are divided by areas of interest, including Additive Manufacturing, Processes with Material Removal, Union and Assembly Processes, Tribology and other manufacturing technologies.. .