<p>Bulk metallic glasses (BMGs) have shown great application potential in engineering because of their excellent mechanical properties, such as high strength and high hardness. But they also bring in great difficulties to their machining. To solve the machining problems, the low-speed cutting characteristics of a Zr₅₇Cu₂₀Al₁₀Ni₈Ti₅ BMG (at.%, noted as Zr57 BMG) were investigated and compared with traditional industrial pure zirconium (Zr702), titanium alloy (TC4), and 45 steel. The effects of tool geometric parameters in terms of corner radius, entering angle, and orthogonal clearance on cutting forces, surface roughness, and surface morphology were investigated and discussed based on theoretical models. Although Zr57 BMG has larger hardness and strength than traditional crystalline alloys, the cutting forces are comparable to these traditional alloys, indicating its good machinability. Overall, the surface roughness of Zr57 BMG was lower than those of traditional alloys due to fewer machined surface defects, reaching to as low as 0.26&#xa0;μm when the corner radius was 1.6&#xa0;mm. With the increase of corner radius, the feed marks and plough grooves on the machined surface of Zr57 BMG gradually diminished, and other surface defects such as adherent material particles and scale-like patterns increased. The present findings are of significance for improving the cutting performance of BMG and further exploring their practical applications.</p>