The theme of the master’s paper: Aluminium detail end milling and surface roughness engineering research. The paper consists of 40 pages. There are 6 tables and 18 pictures included. The aim of paper is to treat aluminium pieces with end mill and take roughness measurements of worked area. The paper consists of recital, 3 chapters with subdivisions, conclusions and bibliography. The first chapter describes the technology of aluminium treatment. This chapter includes cutting conditions, cooling liquids description, cutting tool description and CNC machine review. In the second chapter, author focuses on the surface roughness measurements possibilities and roughness parameters. The third chapter the author describes an analysis of practice measurements and results. While writing the paper I used 6 sources of literature.