4mm 6mm Carbide End Mills for PCB - Corn Tooth Tungsten Steel Engraving Cutters for Circuit Board Machining

Our 4mm & 6mm carbide end mills are precision-engineered for PCB machining applications, delivering exceptional performance in CNC engraving, routing, and milling operations. The innovative corn tooth (corn cob) flute design combined with tungsten steel construction ensures optimal chip evacuation, smooth cutting action, and extended tool life - perfect for FR4, copper-clad laminates, and other PCB materials.

• High-Quality Tungsten Carbide Material: Ultra-fine grain substrate provides maximum hardness and wear resistance, maintaining sharp cutting edges longer than HSS or coated alternatives.
• Optimized Corn Tooth Flute Design: Aggressive chip removal prevents clogging and heat buildup while reducing cutting resistance for smoother engraving (up to 30,000 RPM).
• Precision Ground Cutting Edges: Ultra-sharp edges produce clean, burr-free traces with consistent diameter tolerance (±0.01mm).
• Versatile Sizing: Available in 4mm-6mm diameters to cover most PCB routing needs including traces, slots, holes, and edge trimming.
• Exceptional Durability: Withstands high-speed machining without edge degradation, offering longer tool life than standard PCB bits.

• PCB prototyping and mass production
• Trace routing, slot cutting, and contour milling
• Edge trimming and deburring of circuit boards
• V-grooving and chamfering operations
• CNC engraving machines and PCB drilling rigs