Diamond Finger Milling Bit – Professional Stone & Tile Milling Tool
The Diamond Finger Milling Bit is a high-precision diamond milling and shaping tool designed for professionals in stone fabrication, tile installation, countertop manufacturing, and construction applications. It is ideal for enlarging, shaping, smoothing, and finishing internal hole edges, contours, and cutouts in hard materials such as granite, marble, quartz, ceramic, porcelain, and engineered stone.
Unlike traditional milling or drilling tools, diamond finger bits use industrial-grade diamond abrasives to grind material efficiently, offering long service life, smooth finishes, and minimal chipping, even in delicate or brittle surfaces.
🔹 Key Features
Industrial-Grade Diamond Abrasives
Coated with high-quality diamond grit, the bit ensures fast material removal, consistent grinding, and durable performance.
Slim Finger Design
The elongated, cylindrical profile allows deep reach into holes and cutouts, enabling precise shaping of inner edges.
Multi-Purpose Milling
Perfect for enlarging holes, rounding edges, contouring internal corners, and finishing cutout surfaces.
Wet or Dry Use
Compatible with both wet and dry milling applications, with wet use extending bit life and reducing dust.
Wide Machine Compatibility
Fits angle grinders, CNC stone machines, and hand-held milling tools with standard shanks and thread connections.
Precision Grinding
Provides smooth inner hole surfaces and accurate edge finishing, crucial for high-quality stone work.
🔹 Typical Applications
Diamond finger milling bits are widely used in:
Stone and Tile Fabrication – Enlarging and shaping holes for sinks, faucets, and drain cutouts in granite, marble, or engineered stone.
Countertop Installations – Refining edges and internal contours after core drilling.
Tile and Ceramic Work – Creating precise cutouts for plumbing or electrical fixtures.
CNC Milling Applications – Engraving, shaping, or contouring stone in workshops or production lines.
Artistic Stone Carving – Detailing small, internal 3D designs without chipping or damaging the material.
These bits are essential for contractors, countertop installers, and stone artisans who require accuracy, durability, and clean finishes.
🔹 Technical Specifications
| Parameter | Typical Values |
|---|---|
| Diameter | 10mm – 75mm (various sizes) |
| Thread / Shank | 5/8″-11, M14, or customized |
| Grit Type | #35, #50, #70 (depending on material hardness and finish requirement) |
| Material | Granite, Marble, Quartz, Ceramic, Porcelain, Engineered Stone |
| Use | Wet and dry milling |
| Machine Compatibility | Angle grinders, CNC routers, hand-held milling machines |
| Finish | Smooth internal hole edges, contour shaping, precise cutouts |
Note: Custom sizes and diameters are available for OEM or specialized applications.
🔹 How It Works
Diamond finger milling bits operate using abrasive grinding rather than conventional cutting, which minimizes:
Chipping
Cracking
Edge breakout
For best performance:
Use light feed rates and steady rotational speed.
Prefer wet milling when working on dense stone to reduce heat and extend tool life.
Combine with core drilling for initial holes before internal contour finishing.
🔹 Advantages of ToolWits Diamond Finger Milling Bits
✔ High-precision internal hole and contour shaping
✔ Long-lasting performance for stone, tile, and engineered surfaces
✔ Minimal chipping and smooth finishes
✔ Compatible with both manual and CNC stone milling machines
✔ Cost-effective for workshops, on-site installations, and production lines
🔹 Related Products & Accessories
Diamond Finger Bits – Professional-grade bits for precision internal contour milling.
Diamond Finger Milling Bit Set (4–10 pcs) – For multiple diameters and detailed stone shaping.
CNC Blind Hole Diamond Finger Bits – CNC-compatible bits for granite and marble workshops.
Diamond Finger Bit Grinding Head – Affordable option for small-scale contouring tasks.
🔹 Why Choose ToolWits?
ToolWits is a trusted manufacturer of diamond cutting and milling tools. Our diamond finger milling bits are engineered for precision, durability, and efficiency, providing professional stone fabricators, tile installers, and CNC operators with tools that deliver consistent results on granite, marble, quartz, and engineered stone surfaces.
Packing, Storage, Handling and Transportation
After sales service team:
Technical Team:
Hot Tags: diamond finger milling bit, China diamond finger milling bit manufacturers, suppliers, factory, Concrete Core Drills For Sale, Core Drill Bit Segments, Core Drilling Bit Through Stone Walls, Granite Finger Bit, Core Drill Segments, Diamond Core Drill Bits
