The book "Improvement of efficiency of round external mortise grinding by step-by-step supply of lubricating and cooling technologies" edited by Leonov A. In. is a unique work that will become an indispensable assistant for specialists in the field of engineering, engineers and students of technical universities . In this edition, the author’s team shares its research and practical developments aimed at optimizing the grinding processes, which is certainly relevant in the conditions of modern production. The focus of the book is the process of round external mortise grinding - one of the key operations in the machining of materials. The authors examine in detail the effect of lubricating fluids on the quality of grinding, and also offer innovative approaches to their supply. The reader will be able to learn about how the phased delivery of these technologies can significantly improve processing efficiency, reduce tool wear and improve the quality of finished products. The book will be of interest not only to professional engineers and technologists, but also to students studying mechanical engineering, as well as to anyone who seeks to deepen their knowledge in the field of modern materials processing technologies. Thanks to the available language of presentation and a clear structure, even those who are just starting their way in this area will be able to easily assimilate the material presented. The topics raised in the book cover a wide range of issues related to grinding technology. The authors analyze not only theoretical aspects, but also practical examples, which makes the material especially valuable for readers. The book deals with such important issues as the choice of optimal grinding modes, the impact of various parameters on the processing process and methods for assessing the quality of polished surfaces. This allows readers not only to understand how the proposed technologies work, but also to apply them in practice. The style of the authors is distinguished by scientific rigor and at the same time accessibility, which makes the book interesting for a wide audience. Leonov A. In. and his team are not just researchers, but also practitioners, which allows them to share with readers not only theory, but also real cases from production practice This edition will be an important contribution to the library of any specialist working in the field of machining, and will help them remain at the forefront of technology. If you are looking for literature that will help you understand the intricacies of grinding and improve your skills, then this book is exactly what you need. It will be an excellent addition to other well-known works in the field of mechanical engineering, such as “Mechanical Processing Technology” or “Basics of Mechanical Processing”, and will allow you to expand your knowledge and skills. Thus, "Improving the efficiency of round external mortise grinding through the phased supply of lubricating and cooling technologies" is not just a book, but a real guide to the world of modern materials processing technologies. It will inspire you to new achievements and help you achieve high results in your professional activities . Do not miss the opportunity to immerse yourself in the fascinating world of grinding and discover new horizons in mechanical engineering!