The wear of cutting inserts can have a significant impact on tools costs and machining quality, therefore it is important to find optimal processing parameters to minimize these problems. The idea of this thesis is to determine the impact of the processing parameters (feed) on the wear of the cutting inserts. In the introductory part of this master’s thesis are explained the influence of production parameters on competitiveness. The role of quality is also explained in detail as one of the four most important production parameters. The second chapter follows the basics of the Material Removal Processes (Machining), so the basic parts of the Machining are defined, and a general classification of the Machining is given. In the second chapter are also shown the most important advantages and disadvantages of the Machining and Material Removal as a system. As one of the most frequently used particle separations processes the turning process is described in detail in third chapter, this processing procedure will be used in the practical part of this thesis. We distinguish three machining modes in turning that are explained in detail, with an emphasis on feed. This chapter also contains description of turning tools that are important for further testing. In the fourth chapter the wear od cutting tools are explained in detail. The occurrence of wear, the classification of the process (mechanism) of wear, the signs that indicate the wear of tool and the possible forms of wear of the cutting tools are defined. Also, recommendations for measures to reduce tool wear is given, as well as examples and descriptions of tool materials used for Machining. The practical part of the thesis begins with the fifth chapter, which presents the state of the tool industry in Croatia and shows the parts of tools for the manufacture of glass packaging. From the parts of the tool for glass packaging production the neck is selected for testing, which purpose is to shape the neck of the bottle. Therefore, in sixth chapter the technology of making the throat is shown in detail. The impact of feed on wear of cutting insert is tested on inserts for rough exterior finishing. The only parameter that changes is the feed while all others are constant. The test position is the back od the throat and the processing operation is rough external turning. The goal of the test is to define the impact of feed changes on the wear of insert, which can be an increase or decrease the wear of insert.