The book "Auto fluctuation in friction systems of metal-cutting machines" by Vladimir Kotelevsky is a unique and in-depth study that will open the world of mechanics and dynamics of metal-cutting machines to the reader. In this work, the author analyzes the complex processes occurring in friction systems and their impact on the performance and quality of material processing. Kotelevsky, with many years of experience in the field of mechanical engineering and mechanics, offers the reader not only theoretical foundations, but also practical recommendations that can be useful for both engineers and students of technical specialties. The book is intended for a wide audience, including undergraduates, graduate students, as well as practicing engineers and specialists in the field of mechanical engineering. If you are interested in mechanics, machine dynamics or just want to deepen your knowledge in the field of metalworking, this publication will be a real find for you. Kotelevsky uses accessible language and clear explanations, which makes complex concepts more understandable for readers who do not have deep knowledge in this field. The topics raised in the book cover a wide range of issues related to auto oscillations and their impact on the operation of metal-cutting machines. The author examines in detail the mechanisms of oscillations, their causes and consequences, as well as methods for their prevention. Kotelevsky emphasizes that auto oscillations can significantly worsen the quality of processing, lead to increased wear of tools and even to equipment breakdowns. This makes its work especially relevant for those who seek to improve the efficiency of production processes and minimize costs. Kotelevsky's style is distinguished by scientific rigor and at the same time accessibility. He skillfully combines theory with practical examples, which allows the reader not only to understand the basic principles, but also to see their application in real conditions. This makes the book not just a textbook, but a real guide to the world of mechanics and dynamics, which will be useful for both beginners and experienced specialists. If you are already familiar with other works of the author, such as “The Dynamics of Machines and Mechanisms” or “Fundamentals of Friction Theory”, then “Auto oscillations in friction systems of metal cutting machines” will be a logical continuation of your study. Kotelevsky continues to develop his ideas and deepen his understanding of the processes taking place in mechanical engineering, which makes his books especially valuable for professionals in this field. This book will also be interesting for those who are looking for information about current trends in metalworking and strive to be aware of the latest technologies. With the rapid development of industry and the constant search for ways to improve efficiency, knowledge of fluctuations and their impact on production processes becomes especially important. In conclusion, “Auto fluctuation in friction systems of metal-cutting machines” is not just a book, but a whole world of knowledge that will help you understand the complex mechanisms of metal-cutting machines and improve your skills in the field of mechanical engineering. Do not miss the opportunity to immerse yourself in this fascinating topic and discover new horizons in the world of technology and mechanics!