Many industrial corporations are trying to increase productivity. They were made many types of research focused on cost-effective productivity increasing. Researchers and engineers were created new machining strategies and advanced processes, which could be enhanced by modified geometry, advanced coatings and new cutting materials. One of the costeffective methods to increase productivity is High Feed Machining (HFM). This method does not require any special equipment, such as high-speed spindle. Moreover, it does not require any special conditions neither. Due to the fast rapid traverse of many modern machine tools, High Feed Machining can be performed on most of them. This article compares machining of the reference steel materials -C45 by conventional milling and High Feed Machining. The experiment is based on the creating of some simple shapes, such as vertical and horizontal surfaces, notches, cylinders, etc. There were measured several surface roughness parameters. Results of the experiment could be applied to determine what advantages High Feed Machining brings and when it is advantageous.