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

Carbide Tungsten CNC Router Bits Corn Cutter Cutting End Mill

Introduction:

Our 4mm & 6mm carbide end mills are specially designed for PCB (printed circuit board) machining, offering superior precision and durability for CNC engraving, routing, and milling applications. Featuring a corn tooth (corn cob) flute design, these tungsten steel cutters ensure efficient chip evacuation, smooth cutting performance, and extended tool life, making them ideal for FR4, copper-clad laminates, and other PCB materials.

Features:

✔ High-Quality Tungsten Carbide Material

Ultra-fine grain carbide substrate for maximum hardness and wear resistance

Maintains sharp cutting edges longer than HSS or coated alternatives

✔ Optimized Corn Tooth (Corn Cob) Flute Design

Aggressive chip removal to prevent clogging and heat buildup

Reduced cutting resistance for smoother engraving

Ideal for high-speed PCB milling (up to 30,000 RPM)

✔ Precision Ground Cutting Edges

Ultra-sharp edges for clean, burr-free traces on PCBs

Consistent diameter tolerance (±0.01mm) for accurate machining

✔ Available in 4mm - 6mm Diameters

Covers most PCB routing needs (traces, slots, holes, and edge trimming)

Compatible with standard CNC engraving machines and routers

✔ Excellent Heat & Wear Resistance

Withstands high-speed machining without edge degradation

Longer tool life compared to standard PCB bits

Typical Applications:

• PCB Prototyping & Mass Production

• Trace routing, slot cutting, and contour milling

• Edge trimming and deburring of circuit boards

• V-grooving and chamfering operations

• CNC Engraving Machines & PCB Drilling Rigs

Detailed Pictures:

Our workshop:

Promotion policy:

To help you experience our premium products, we’re excited to offer the following exclusive promotions for first-time buyers:

1.Free Test Samples

Get free samples (total value ≤ $20 USD) when you cover the international shipping cost.

Perfect for evaluating our product quality and performance risk-free.

2.$50 USD Discount on First Order

New customers can enjoy a $50 discount on the first order of $500 or more.

A great way to start our partnership with extra value!

Other products:

FAQ:

1. Are you a manufacturer or trading company?

We are a professional manufacturer of carbide tools which established in 2017.

2. Which CNC grinding machine do you use?

All of our carbide tools are produced by imported WALTER grinding machines.

3. Which shipping method do you usually use?

We usually send goods by express like FedEx, UPS, DHL, TNT, EMS, ETC.

We also can send products to your shipping agent in China.

  CHANGZHOU AMG PRECISION TOOL MANUFACTURING CO., LTD. is a leading manufacturer and solution provider specializing in high-performance carbide cutting tools for precision CNC machining applications. With a strong commitment to innovation and quality, we design and produce an extensive range of standard and custom cutting tools, including carbide drill bits, end mills, reamers, and complex non-standard forming tools tailored to meet the most demanding machining challenges.