The paper discusses the results of experimental investigations into regenerative self-oscillations during longitudinal turning using the original design of a cutter-oscillator. This design allows the measurement of oscillations exclusively along the axis of force Fx, coinciding with the direction of the cut thickness variation during cutting along the vibration trace on the cutting surface. In this case, one of the primary sources of self-oscillations - coordinate coupling - is eliminated. It has been established that three-speed zones can be distinguished during longitudinal turning. In the first zone, characterized by low cutting speeds, growth formation is observed. In the second zone, as cutting speeds increase, regenerative self-oscillations are excited up to their maximum level, followed by a subsequent decrease. In the third zone of high speeds, degeneration of regenerative self-oscillations and the realization of vibration-free cutting conditions are observed. Various characteristics were determined during the experiments, including the static deflection of the cutter-oscillator from the position of initial equilibrium, amplitude, and frequency of self-oscillations, the phase shift of waves of neighboring revolutions, length of one wave, and the number of waves on the cutting surface. The research results indicate that the developers of the theory of regenerative self-oscillations and stability lobe diagrams did not consider the influence of a basic mechanism of chip formation, specifically the process of shifting the chip element under an angle. This omission necessitates additional experimental studies to refine the recommended stability lobe diagrams. This article aims to formulate and experimentally verify the general principal differences between dynamic cutting conditions and static ones and, based on this knowledge, investigate ways of increasing the resistance to vibration excitation for each type of machining.