Burr formation is a common issue in CFRP machining, often resulting from ineffective fibre removal due to outof-plane deformation. Burrs are typically seen in drilling and milling of CFRP and often require time-consuming and costly deburring process, which therefore should be controlled and minimized. Poor et al. identified typical scenarios where burrs are likely to form during CFRP machining: (1) laminate buckling at the drill exit due to inadequate support for the final layers; (2) material removal dominated by bending behaviour, particularly at a fibre cutting orientation of approximately 135°. The readers are referred to the relevant review paper for detailed information on the measurement and quantification of burr.