## 1 Introduction
The salient finding was that brass, with its high yield strength and good mechanical properties, exhibited the least cavitation wear. This discovery contributes to our understanding of material properties and inspires potential applications in industries where cavitation wear is a concern ([PERSON], [PERSON] et al., 2022 [18]). In this study, CW724R lead-free brass material was machined using a carbide tip on a CNC lathe under dry conditions. The investigation of three different feeds, cutting speeds, and depths of cut to assess their impact on the surface roughness of the processed brass presents opportunities for optimization. The results indicated that the feed was crucial in determining surface roughness, with the lowest surface roughness value achieved at a cutting speed of 181 m/min, a depth of cut of 0.025 mm, and a feed of 0.08 mm/rev ([PERSON], [PERSON], 2022 [19]). The study investigated the practical implications of surface roughness of fine brass wire. After subjecting a wire with a diameter of 140-200 microns to two dielesas drawing processes and incremental dieless drawing, it was found that the latter resulted in higher productivity and lower surface roughness. This finding informs our understanding of the wire drawing process and inspires potential improvements in wire production ([PERSON], [PERSON], et al., 2022 [20]). In this study, Al 6061 aluminum alloy material was turned. In the experiment, a 0.2 mm/rev constant feed value, two cutting speeds (125 and 250 m/min), and 4 cutting depth values (0.4, 0.8, 1.6, and 2.4 mm) were the working parameters. As a result of the experiment, the lowest surface roughness value was determined as an Ra value of 0.5 \(\upmu\)m at a 250 m/min cutting speed with a coded cutting tool. It was determined that the surface roughness values decreased with the decrease in cutting depth. The highest surface roughness value was 1.07 \(\upmu\)m (0.4 mm cutting depth and 125 m/min cutting speed). When all cutting parameters and tools were compared, the highest surface roughness value was 7.22 \(\upmu\)m at a 2.4 mm cutting depth with a TNMG-coded tool (Pul, [PERSON], 2022 [21]). Research indicates that surface roughness measurements are commonly performed using materials such as steels, cast irons, aluminum alloys, and brass, considering various chip removal parameters as variables. The experimental designs employed in these studies suggest that optimal surface roughness can be achieved by determining the best chip removal conditions. Key parameters impacting chip removal typically include feed, feed rate, cutting speed, spindle speed, depth of cut, tool tip radius, and the amount of material removed. These studies reveal that the feed parameter significantly affects surface roughness, often showing that a decrease in feed leads to reduced surface roughness. Furthermore, increasing the cutting speed and decreasing the depth of the cut tends to improve surface roughness. However, only some studies focus specifically on Ms58 brass material, aside from those referenced as CW724R and CW509L. The results of literature reviews and industrial applications indicate that the surface quality of brass materials, regardless of the production method used, is crucial in practice. This study experimentally investigates the surface quality of Ms58 brass material during the turning process of external cylindrical surfaces, focusing on variations in feed rate and cutting-edge angles. Given the limited research available on Ms58 material, the findings of this study will also add valuable contributions to the existing literature.