The single-edge straight-fluted sharp cutter features large chip clearance, excellent heat dissipation, and reduced tool adhesion, primarily used for processing soft plastics such as acrylic and PVC. It delivers smooth, clear, non-yellowing, and edge-free cutting surfaces, making it ideal for precision cutting, hollowing, and engraving, with a focus on surface finish quality. The double-edge straight-fluted sharp cutter offers greater rigidity, even force distribution, and high stability, suitable for hard materials like MDF, solid wood, and hard plastics. It achieves higher cutting efficiency and reduced tool breakage, making it ideal for slotting, milling, and batch processing, emphasizing rigidity and efficiency. The two types differ significantly: single-edge suits soft materials requiring high surface finish, while double-edge is suited for hard materials requiring high-speed stable processing.