Abstract: Among the authors' interests we enumerate integrated Kanban processes, fields in which the authors published a few papers. An important technical-economic issue in manufacturing heat-insulation materials is the optimization of the cutting process of expensive bars using  numerical-controlled  cutting machines, in view of reducing the losses of bars ends. Apparently simply as phenomenon, the optimization of bars' precise cutting process, integrated in Kanban processes, is complex but increases the efficiency of the cutting process by reducing the material losses. The paper presents the diagram of organizing the cutting department, of optimizing the process and algorithm of department operation.