This book presents selected chapters from the 26th International Wood Machining Seminar (IWMS26), held April 14–15, 2025, in Firenze, Italy. It reports on advances in wood machining, covering cutting force and power measurement and modeling, wood cutting mechanics, new tools and machines, sensors and quality, process optimization, health and environmental issues, and market trends. The chapters include both theoretical research and experimental studies, offering state-of-the-art insights for academics and professionals interested in the wood machining sector.