Answer
Jul 23, 2026 - 07:17 AM
A drag knife is a specialized cutting tool commonly used in machines such as plotters and CNC cutters. Unlike rotary blades or powered cutting tools, a drag knife’s blade is not motor-driven; instead, it is simply dragged across the material by the machine’s movement. The unique design allows the blade to swivel freely, automatically orienting itself in the direction of travel to create smooth, precise cuts—even around curves and intricate shapes. This makes drag knives particularly well-suited for working with flexible, thin, or delicate materials. Donek drag knives, for example, are widely used in both industrial applications and by hobbyists for cutting a diverse range of materials. These include snowboard and ski base materials, wood veneer for inlay and marquetry, leather, carbon fiber pre-preg laminates (commonly used in aerospace, military, and automotive industries), and cardboard for custom packaging. They are also capable of cutting various fabrics, including dry fiberglass, carbon fiber, and Kevlar, as well as Coroplast, vinyl for signs and stickers, and plastics such as UHMW polyethylene, ABS, and Lexan film. Additionally, drag knives are effective for cutting paper, foamboard, magnetic sheets, and gasket materials. Their versatility and precision make them indispensable for producing custom parts, signage, packaging, and decorative art, especially when clean edges and intricate detail are required.
