Small stone saw blades (typically 4" to 7" in diameter) are essential for precision cutting, detailing, and smaller projects. They are commonly used with angle grinders, small benchtop saws, and tile cutters.
| Parameter | Common Options | Description |
|---|---|---|
| Diameter | 4", 4.5", 5", 6", 7" | Determines maximum cutting depth. Smaller diameters offer better control for detailed work. |
| Arbor Hole | 5/8"-11 (for angle grinders), 20mm, 1" | Must match the tool's spindle. 5/8"-11 is the standard for most angle grinders. |
| Rim Type | Continuous Rim, Turbo Rim, Segmented | Defines cutting speed, finish, and primary use case (see below). |
| Material | Diamond Grit (with metal powder bond) | The quality and size of the diamond crystals determine longevity and cutting speed. |
| Bond Hardness | Soft, Medium, Hard | A softer bond wears faster, exposing new diamonds for cutting harder materials. A hard bond lasts longer but is for softer materials. |
| Max RPM | ~12,000 RPM (for 4" blade) | Never exceed the maximum RPM rating stamped on the blade. |
Continuous Rim (Smooth Rim)
Best For: Porcelain tile, ceramic tile, marble, and other delicate materials.
Advantage: Provides a chip-free, clean finish. Cools effectively.
Disadvantage: Slowest cutting speed.
Use Case: Wet or dry cutting.
Turbo Rim (Serrated Rim with Vents)
Best For: Granite, natural stone, concrete pavers, brick.
Advantage: Fast cutting speed. The turbo segments and vents improve airflow and cooling.
Disadvantage: Finish is not as clean as a continuous rim.
Use Case: Primarily dry cutting, but can be used wet.
Segmented Rim (With Gullets)
Best For: Aggressive cutting of concrete, block, brick, and hard stone.
Advantage: Most aggressive and durable. The segments dissipate heat efficiently.
Disadvantage: Very rough cut; will chip delicate materials.
Use Case: Dry cutting only.
Porcelain & Ceramic Tile: Continuous Rim blade. A "porcelain blade" is specifically engineered for ultra-hard, glazed surfaces.
Marble & Slate: Continuous Rim or Turbo Rim for a balance of speed and finish.
Granite & Engineered Quartz: Turbo Rim blade is the standard choice for speed and durability.
Concrete Pavers & Brick: Turbo Rim or Segmented Rim, depending on the required finish and speed.
Concrete Block & Rebar: Segmented Rim blade.
Match the Blade to the Material: Using a segmented blade on tile will destroy it. Using a continuous rim blade on concrete will glaze it over and make it ineffective.
Wet vs. Dry: Wet cutting extends blade life, reduces dust, and provides a cleaner cut. Always check if the blade is rated for wet use.
Let the Blade Do the Work: Do not force the blade. Applying excessive pressure can overheat the blade and damage the diamond matrix.
Safety First: Always wear safety glasses, a respirator (for silica dust), and gloves. Use a tool with a proper guard.
Using a Blunt Blade: A blade that smokes, cuts slowly, or chips the material needs to be replaced or may be wrong for the job.
Incorrect Arbor Size: Using a blade without the correct bushing adapter can be extremely dangerous.
Overheating: Allow the blade to cool down during prolonged dry cutting to prevent the metal bond from losing its temper and diamonds from falling out.
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