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CNC Basin Profile Finger Bit For Chamfering Granite Marble and Other Stones

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CNC Basin Profile Finger Bits, also known as "sink finger mills" or "basin profiling tools". These are precision forming tools specifically designed for stone CNC machining centers, used to create the internal contours of basins or sinks on granite, marble, quartz, and other stone countertops.

As seen in the image, this set consists of multiple finger-shaped bits of varying profiles and sizes. Each bit features a diamond-impregnated working end and a standard threaded shank (e.g., 1/2:Gas) for mounting onto a CNC spindle. They are typically used in a specific sequence (from roughing to finishing) to complete the entire process of hole opening, rough grinding, fine grinding, and polishing.

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Technical Specifications

Diameter(mm)	Segment Height(mm)	Thread Type
D15	20/30/40/50	1/2"Gas
D20	20/30/40/50	1/2"Gas
D25	20/30/40/50	1/2"Gas
D30	20/30/40/50	1/2"Gas

Other specifications are available upan request.

Key Characteristics

🔹High-Precision Profiling: The bit profiles are precisely engineered to accurately replicate complex internal contours of basins or sinks, such as radii, straight edges, and bevels, ensuring smooth, dimensionally accurate finished edges.

🔹Diamond Abrasive: The working ends are made with high-quality diamond particles, offering excellent wear resistance and long service life, suitable for machining hard stone materials.

🔹Modular Design: A complete set includes multiple bits with different functions, capable of handling all processes from roughing to finishing, reducing tool changes and improving efficiency.

🔹Standard Shank: The threaded shank (e.g., 1/2"Gas ) is compatible with mainstream stone CNC machining centers, ensuring easy installation and broad applicability

🔹Efficient Chip Removal: The bit design often incorporates chip removal grooves or segmented structures to quickly expel debris during high-speed rotation, minimizing clogging and ensuring processing quality.

Usage Scenarios

🔹Kitchen Countertop Sink Fabrication: Used to machine the internal contours of undermount or integrated sinks on granite, quartz, and other countertops.

🔹Bathroom Countertop Basin Fabrication: Used to create complex internal contours for washbasins, bathtub edges, etc., on marble, solid surface, and other countertops.

🔹Complex Stone Component Machining: Used for machining various stone components requiring internal profiling, such as curved panels, columns, and spheres.

🔹High-End Custom Stone Furniture: Used in the production of stone coffee tables, bars, dining tables, and other furniture with complex internal cavities.

🔹Monument and Tombstone Fabrication: Used for carving text, patterns, and decorative curves on tombstones, enhancing product value.

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Key Advantages

Why Choose Our Diamond Tools?

🔹 Advanced Diamond Formula

Optimized segment formula ensures faster cutting and longer lifespan.

🔹 High Strength Bonding

Hot-pressed sintering technology improves segment durability.

🔹 Smooth Cutting Performance

No chipping, no burning, stable cutting experience.

🔹 Wide Compatibility

Suitable for various machines and working conditions.

🔹Our Manufacturing Strength

• Advanced sintering technology

• Strict quality inspection system

• Over 10 years of production experience

• Professional R&D team

👉 All products are tested before delivery.

Payment item & shipping

🔹 Payment items?

Bank T/T,L/C,Western Union,Paypal ect

🔹 Delivery method?

• Trail order or testing order with light weight(<45kgs), we recommend Express Service.

• Normal order weighting over 45kgs, we recommend Air transportation.

• For large orders or heavy weights, we recommend sea transportation.

Frequently Asked Questions (FAQ)

🔹Q1:What material is your product ?

Our products are made from diamond , we have sintering, electroplating , and brazing technology.

🔹 Q2: How will you guarantee the quality is eligible ?

We have 3 times to examine the quality of products , first : pre-production , second : post-production , third : before delivery.So you needn't to worry about it.

🔹Q3: Can you provide OEM service?

Yes, we support OEM and customized packaging.

🔹 Q4: What is your MOQ?

Usually 3 pcs, but flexible for trial orders.

🔹Q5: What is the delivery time?

7–15 days depending on quantity and styles.

🔹 Q6: How could I complete an order ?

• Sending your inquiry/requirements about products.
• We confirm your inquiry.
• Discuss with the details of products.
• you pay us down payment , then we begin to produce stuff .
• When you receive all the goods , you can check it first, if no question , then the order is finished , if there are some questions about quality , then we can deal with it together , we are responsible for the after sales.

Ready to get the best cutting performance?