This book explores the fundamentals and advancements of 3D printing technology, covering materials, processes, and applications across industries. It highlights the principles of additive manufacturing, design considerations, and the latest innovations shaping healthcare, aerospace, automotive, and consumer products. With a focus on sustainability and future trends, the book provides readers with practical insights into prototyping, production, and customization. It serves as a valuable resource for students, researchers, and professionals seeking to understand how 3D printing is revolutionizing manufacturing and enabling next-generation solutions.