Techniques de fabrication de pièces mécaniques en plastique ou composite is a practical guide written in French that explores the methods and materials used to produce mechanical components from plastic and composite materials. Drawing on industry standards and case studies, the book covers design considerations, manufacturing processes, quality control, and troubleshooting. It serves as a useful reference for engineers, designers, and technicians involved in the production of lightweight, high‑performance parts for automotive, aerospace, and consumer applications.