qmdiamondtool
Finger Bit For Processing Screw Holes on Granite And Marble Surfaces
Diamond finger bits, also commonly known as diamond profiling wheels or diamond(grinding heads). They are professional tools mounted on CNC machines or handheld grinders, designed for shaping, chamfering, slotting, or engraving the edges of hard materials.
As seen in the image, the set includes a metal shank (for connecting to the machine spindle) and two interchangeable diamond bit heads. The head part is cylindrical or of a specific shape, with its surface embedded with diamond particles fixed onto a metal matrix through sintering or brazing processes. This modular design allows users to replace heads with different shapes or grits according to processing needs, significantly improving the tool's flexibility and cost-effectiveness.
Technical Specifications
| Description | Diameter(inch) | Diameter(mm) | Segment Size(mm) | Total Length(mm) | Thread Type |
| Cutting Finger Bit | 3/4 | 20 | D20/D14*20T | 47 | M10, M12 |
| Cutting Finger Bit | 3/4 | 20 | D20/D14*20T With 4 Slots | 47 | |
| Holder | 1-3/8 | 30 | 100, 200 | 1/2"Gas |
Key Characteristics
🔹High Hardness and Wear Resistance: The cutting material of the bit head is diamond, enabling efficient processing of high-hardness and highly wear-resistant materials such as granite, marble, quartz, and ceramics, ensuring a long service life.
🔹Modular Design: The bit head and the metal shank are connected via threads, allowing for quick and easy replacement. This design not only reduces usage costs (since only the worn-out head needs to be replaced) but also makes it convenient to select heads of different specifications (such as diameter, shape, and grit) for various tasks.
🔹Precision Processing Capability: When used with CNC machines, these bits can achieve high-precision and highly repeatable complex contour processing, such as rounded edges, beveled edges, and ogee edges, meeting the decorative demands of high-end stone products.
🔹Multiple Connection Specifications: The thread specifications (e.g., M10, M12) and shank diameter of the metal shank are available in various options to adapt to different brands and models of CNC machines or handheld equipment.
Usage Scenarios
🔹Stone Edge Profiling: This is their primary application. They are used to process various decorative contours on the edges of stone products like kitchen countertops, washbasins, and stair treads, such as round edges, beveled edges, double round edges, and duckbill edges.
🔹Slotting and Engraving: They can be used to cut slots on stone surfaces, for example, to create installation spaces for undermount sinks or appliances, or to perform simple relief carvings and pattern engravings.
🔹Chamfering and Deburring: Used to chamfer the edges of cut stone, removing sharp corners to improve safety while preparing the surface for subsequent polishing processes.
🔹Ceramic and Glass Processing: Equally applicable for processing large-format ceramic boards, sintered stone, or thick glass, performing edge trimming and shaping tasks.
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?
