Solid Carbide Corn-Cut Router Bits for PCB and Composite Materials
Features & Advantages:
⦁ Made from high-quality solid carbide substrate, ensuring maximum rigidity, wear resistance, and long tool life.
⦁ Features multi-colored functional coatings (e.g., TiCN, AlTiN), providing high hardness, heat resistance, and visual identification.
⦁ Square (corn) end design suitable for cavity milling, shoulder milling, and precision finishing of vertical side walls.
⦁ Geometry optimized specifically for the milling characteristics of PCB substrates (e.g., FR4) and natural/engineered stone (e.g., marble, granite).
⦁ Full OEM/ODM services available, supporting custom diameters, flute lengths, coating colors, and packaging.
⦁ Exceptional durability provides significantly longer tool life than standard coated tools when milling abrasive PCB materials and hard stone.
⦁ Colored coatings enable quick tool identification and sorting on the shop floor, reducing changeover errors and improving production management efficiency.
⦁ Versatile single-tool solution for both precision milling in electronics and roughing/finishing in stone processing, reducing the variety of tools users need to stock.
⦁ Optimized flute and edge design effectively reduces burring when milling PCBs and ensures efficient chip evacuation when engraving stone.
⦁ Custom coating and flute profile solutions available for specific materials (e.g., high-fiberglass boards or high-hardness granite), optimizing machining efficiency and cost-effectiveness.
Consistent Quality
Consistent geometry across repeat orders.
Flexible Orders
Small batches and mixed sizes available.
OEM Support
Custom marking, labels and packaging.
Standard & Custom
Standard sizes and custom configurations.
Color-Coated Corn End Mills: Durable Solid Carbide Cutters for Precision PCB & Stone Milling
Product Overview
Maximize precision and durability across diverse materials with our Color-Coated Corn End Mills. Engineered for demanding applications in both PCB fabrication and stone engraving, these solid carbide cutters combine high-performance geometry with advanced multi-colored PVD coatings. Designed to deliver long-lasting performance in abrasive and hard materials, these versatile tools offer clear visual identification and reliable milling results for industrial, prototyping, and artistic applications.
Technical Specifications
| Specification | Details |
|---|---|
| Tool Type | Corn End Mill (Square End) |
| Material | Premium Solid Carbide |
| Coating Types | TiCN (Gold), AlTiN (Purple/Gray), TiAlN (Bronze), Custom Options |
| Diameter Range | 1.0mm – 12.0mm (Standard) |
| Flute Count | 2 or 4 Flutes (Material-Optimized) |
| Helix Angle | 30° (PCB) / 45° (Stone) Options |
| Shank Type | Straight Shank, Collet-Compatible |
| Applications | FR4, Ceramic PCBs, Marble, Granite, Composite Stone, Acrylics |
Product Parameters:
| Shank Diameter | Flute Diameter | Flute Length | Overall Length |
|---|---|---|---|
| 3.175 | 0.5 | 3.5 | 38.1 |
| 3.175 | 0.6 | 4 | 38.1 |
| 3.175 | 0.7 | 5 | 38.1 |
| 3.175 | 0.8 | 5 | 38.1 |
| 3.175 | 0.9 | 6.5 | 38.1 |
| 3.175 | 1.5 | 8.5 | 38.1 |
| 3.175 | 1.6 | 8.5 | 38.1 |
| 3.175 | 2 | 10 | 38.1 |
| 3.175 | 2.4 | 12 | 38.1 |
| 3.175 | 3 | 12 | 38.1 |
| 3.175 | 3.175 | 12 | 38.1 |
| 4 | 4 | 17 | 50 |
| 4 | 4 | 22 | 50 |
| 4 | 4 | 32 | 60 |
| 6 | 6 | 22 | 50 |
| 6 | 6 | 25 | 55 |
| 6 | 6 | 32 | 60 |
| 8 | 8 | 22 | 60 |
| 8 | 8 | 32 | 70 |
Key Features
1. Advanced Color PVD Coating
-
High Wear & Heat Resistance: Coatings like AlTiN and TiCN extend tool life in abrasive PCB substrates and hard stone.
-
Quick Visual Identification: Color coding allows for easy tool selection, organization, and inventory management.
-
Reduced Friction & Adhesion: Smooth coated surface minimizes material buildup, especially in sticky composites or resin-rich PCB laminates.
2. Precision Corn (Square End) Design
-
Sharp 90° Corners: Ideal for detailed profiling, pockets, and edge finishing in both PCBs and decorative stone.
-
Efficient Chip Evacuation: Optimized flute geometry clears chips effectively in deep engraving or slotting tasks.
3. Solid Carbide Construction
-
Rigid & Vibration-Resistant: Provides stable performance in high-speed milling and hard material engraving.
-
Suitable for High RPM Use: Excellent for CNC routers and milling machines running at elevated speeds.
4. Dual-Application Geometry
-
PCB-Optimized: Sharp edges and polished flutes reduce burring on fine copper traces and fragile substrates.
-
Stone-Optimized: Robust edge design withstands the abrasive nature of granite, marble, and engineered stone.
5. Customization Support
-
Coating & Color Matching: Custom PVD coating colors available for branding or application-specific needs.
-
Non-Standard Sizes & Lengths: Special diameters, reach lengths, and shank designs can be produced upon request.
Product Advantages
| Advantage | Benefit |
|---|---|
| Extended Tool Life | Multi-layer PVD coatings enhance durability, reducing tool replacement frequency and operational cost. |
| Material Versatility | One tool series suitable for both delicate PCB milling and heavy-duty stone engraving. |
| Improved Process Control | Color coding prevents tool misselection, supports organized tool cribs, and simplifies operator workflow. |
| Superior Surface Finish | Precision-ground edges deliver clean, sharp contours in stone and smooth, burr-free edges on PCB substrates. |
| Reduced Downtime | Durable performance in challenging materials minimizes machine stops for tool changes and adjustments. |
Recommended Applications
📌 PCB & Electronics Manufacturing
-
Isolation routing of circuit boards (FR4, Rogers, ceramic-based)
-
Engraving serial numbers, logos, or identifiers on PCB panels
-
Cutting and shaping insulating materials and composite laminates
-
Prototyping and small-batch PCB fabrication
⛏️ Stone, Glass & Composite Engraving
-
Decorative engraving on marble, granite, slate, and engineered stone
-
Sign-making, memorials, and artistic stonework
-
Milling of acrylics, composite panels, and decorative laminates
-
2D/3D relief carving and lettering in stone and hard polymers
Coating Selection Guide
| Coating Type | Color | Best For | Key Property |
|---|---|---|---|
| TiCN | Gold | General PCB, composites, softer stone | Excellent wear resistance, smooth finish |
| TiAlN | Bronze | Hard stone, abrasive composites | High heat resistance, good for dry cutting |
| AlTiN | Purple/Gray | Granite, reinforced PCBs, high-speed milling | Extreme hardness, thermal barrier effect |
| Custom Coating | As specified | Specialized wear/friction requirements | Tailored to specific speed, feed, and material needs |
Usage & Maintenance Tips
Operating Parameters (Recommendations)
| Material | Spindle Speed (RPM) | Feed Rate (mm/min) | Depth of Cut |
|---|---|---|---|
| FR4 / PCB Laminate | 18,000 – 24,000 | 600 – 1,200 | 0.3 – 1.0 mm |
| Marble / Softer Stone | 12,000 – 18,000 | 800 – 1,500 | 1.0 – 3.0 mm |
| Granite / Hard Stone | 10,000 – 15,000 | 400 – 900 | 0.5 – 2.0 mm |
Tool Care Guidelines
-
Clean after use with a soft brush to remove stone dust or resin particles.
-
Store in original packaging or a dry, organized tool holder.
-
Avoid dry running in stone without adequate cooling/lubrication where required.
-
Inspect edges regularly under magnification for wear or chipping.
Customization & OEM Services
We provide full OEM and ODM support, including:
-
Color Matching: Coatings matched to your corporate or operational color system.
-
Special Dimensions: Non-standard diameters, flute lengths, and shank designs.
-
Private Labeling: Branded packaging, inserts, and tool documentation.
-
Performance Testing: Custom tool trials for your specific material or machine setup.
Ordering Information
-
Standard sizes are available for fast delivery.
-
Custom tools typically require 3–5 weeks for production, depending on specifications.
-
Sample tools can be provided for testing and validation upon request.
-
MOQ varies based on customization level—contact us for a tailored quote.
Why Choose Our Color-Coated Corn End Mills?
✅ Proven Performance – Reliable results across PCB and stone materials.
✅ Visual Tool Management – Color coding enhances shop floor efficiency.
✅ Strong Customization Support – Tools adapted to your needs, not just off-the-shelf.
✅ Technical Expertise – Backed by engineering support for parameter optimization.
✅ Competitive Pricing – High value through extended tool life and reduced downtime.
Need Sizes, Pricing or Custom Options?
Send us the required tool type, sizes, quantities, workpiece material and any OEM or custom requirements. We will confirm suitable specifications, availability, lead time and quotation details.
Drawings, size lists and reference photos are welcome.