YINGHUA 4X17X45mm Blue 3A Up Down Compound Single Flute Spiral Carbide Mill Tool Cutter

YINGHUA 4X17X45mm Carbide Mill Cutter

This single-flute carbide mill cutter is designed for CNC routing applications. It suits workshops and makers who need precise profiling on wood-based panels and plastics. The up-down compound geometry reduces tear-out on both faces of the workpiece. It is not for buyers needing multi-flute tools for heavy chip evacuation or high-feed roughing.

17 mm cutting length with 45 mm overall reach

The 17 mm flute length provides enough depth for typical sheet-goods profiling and pocketing. The 45 mm total length fits standard ER collets and tool holders without excessive overhang. It runs out of reach on thicker stock or deep cavities that exceed the flute length. Users cutting material stacks beyond 17 mm will need a longer tool.

Tungsten steel body with blue coating

The tungsten steel construction resists wear when cutting abrasive composites such as density board and PVC. The blue coating aids chip identification and reduces built-up edge on acrylic. The single-flute design demands rigid spindle run-out and secure collet clamping to avoid chatter. It is not suited for hand-held routers lacking precision collet systems.