This White & Black Buff Polishing Disc for large stone slabs is a specialized consumable designed for the final, ultimate gloss-enhancing stage on granite and engineered quartz slabs. It is compatible with fully automated production lines, bridge-type polishing machines, and heavy-duty manual slab polishers. As a soft polishing disc with no coarse cutting capability, it is used after 3000-grit resin-bonded abrasive blocks to instantly achieve a highly transparent, mirror-like finish, effectively eliminating the haziness and "orange-peel" texture often left behind by resin polishing.
Sometimes we also refer to a Buff polishing disc with 6 drainage channels as a 6-petals buff polishing disc, which is usually used in automatic polishing machines. The traditional 3-drain groove polishing discs(3-petals buff discs) are used on hand-held polishing machines.
We also call them as "Black Buff Disc", "White Buff Disc", "Final Polishing Buff Pad", "Black & White Bufff polishing Pad" , "Buff Polishing Disc"
Black vs. White Selection Logic
Core Selection Criteria
1 White Buff:
- Formulated with a white polishing layer specifically for light-colored granite, white engineered quartz, and beige stone. It ensures the base color remains clean and translucent without causing graying or staining, preventing the surface from darkening or looking dull.
2 Black Buff:
- Formulated with a black polishing layer suitable for dark granite, Black Galaxy, Indian Black, and dark gray/black thick slabs. It offers higher friction for polishing, effectively removing fine scratches and enhancing the clarity and depth of the dark base color, while preventing the surface from developing a hazy gray or whitish cast.
Mainstream Specifications
Universal for Large Slabs
Standard diameters of 150mm and 200mm (8 inches); the central flange mount is compatible with 250/300mm walk-behind large-slab grinding heads and fully automatic L140 granite polishing line heads. The disc surface features three or six drainage channels to facilitate rapid stone dust removal and cooling during wet grinding.
(Diameter 200mm Black Stone Slab Buff Polishing Disc)
Material Composition and Polishing Principles
1. Material Composition
- Polishing Body: Soft composite resin + ultrafine alumina powder + trace amounts of ultrafine diamond powder; contains no coarse-grit cutting diamonds.
- Base: Rigid metal flange center hub with an integrally molded soft polishing layer on the outer ring (thickness: 8–12 mm).
- Formulation Differences: The white polishing disc contains a white anti-staining filler; the black polishing disc contains a black wear-resistant filler to enhance friction.
2. Polishing Principles
- Functions via non-cutting micro-abrasion using ultrafine, soft abrasive powders, simultaneously smoothing out microscopic surface irregularities and "orange peel" textures left by earlier resin polishing stages. Friction generates gentle heat, promoting more uniform light refraction within the granite crystals; gloss levels increase by 10–15°, achieving a high-definition mirror finish of 95–110°-free from white haze or dull, matte layers.
Standard Mirror-Finish Process for Large Granite Slabs
- Metal-bond Diamond Grinding Disc (#30–#200 for coarse grinding and leveling) →
- Resin-bond Diamond Polishing Disc (#400/#800/#1500/#3000 for progressive fine polishing) →
- Black/White Buff polishing discs (final gloss enhancement)
Comparison Chart for White Buff and Black Buff Applications
| Type | Suitable Stone | Materials Prohibited Applications | Polishing Effect Characteristics |
| White Buff | White Sesame Granite, Yellow Rust Granite, Light Gray Granite, White Engineered Quartz, Light-colored Engineered Slabs | Pure Black or Dark Granite (prone to developing a grayish, hazy finish) Maintains clean base color without staining; | soft, translucent luster; no dark spots on light-colored stone |
| Black Buff | Black Galaxy, Mongolian Black, Indian Black, Dark Gray/Black Granite, Dark Tombstone Slabs | Pure White/Light Yellow Marble, Light-colored Quartz (prone to slight staining or darkening) Higher friction | deep, rich base color for dark stone; superior mirror-like clarity |
* The above is for reference only. In actual use, we still need to analyze based on specific situations.
Core Advantages of Cheefung Buff Disc
1 Significantly Enhances Surface Clarity
Polishing solely with 3000# resin pads often leaves a slight haze; using the "Black/White Buff" system as the final step eliminates "orange peel" haze and boosts gloss levels by over 10°, meeting high-gloss acceptance standards for export-grade stone.
2 Color-Specific Formulas Prevent Staining and Waste
The "White Buff" anti-staining formula protects light-colored stone, preventing the gray spotting often caused by black buffing pads; the "Black Buff" high-friction formula is optimized for dark, hard granite, offering superior efficiency and solving the common issue of dark slabs appearing dull or gray.
3 Compatible with Both Automated Lines and Manual Slab Polishers
The standard 200mm size fits directly onto 16- or 20-head automatic granite polishing lines and is also compatible with heavy-duty 250mm/300mm manual rotary polishers, making it suitable for everything from mass-producing large slabs to processing individual
4 thick slabs or monument stones.
Wear-Resistant and Stable with Controllable Mass-Production Costs
Under standard operating conditions, a single pad processes 8,000–16,000 m²-far outperforming fiber-sponge buffing pads. They resist powdering and delamination during wet (water-cooled) processing, ensuring stable performance during continuous 24-hour production runs.
5 Easy and Universal Installation
Features a standard central flange mount, allowing for direct replacement of existing resin-bonded abrasive pad bases without equipment modification; enables seamless switching between standard polishing and final gloss-enhancing steps.
Cheefung Company supplies various models, specifications, and uses of diamond grinding discs ,buff disd and polishing discs, which are sold directly from the manufacturer with high cost-effectiveness and stable performance.