TCT Saw Blade
HERO Sizing Saw Blade
HERO Panel Sizing Saw
HERO Scoring Saw Blade
HERO Solid Wood Saw Blade
HERO Aluminum Saw
Grooving Saw
Steel Profile Saw
Edge Bander Saw
Acrylic Saw
PCD Saw Blade
PCD Sizing Saw Blade
PCD Panel Sizing Saw
PCD Scoring Saw Blade
PCD Grooving Saw
PCD Aluminum Saw
Cold Saw for Metal
Cold Saw Blade for Ferrous Metal
Dry Cut Saw Blade for Ferrous Metal
Cold Saw Machine
Drill Bits
Dowel Drill Bits
Through Drill Bits
Hinge Drill Bits
TCT Step Drill Bits
HSS Drill Bits/ Mortise Bits
Router Bits
Straight Bits
Longer Straight Bits
TCT Straight Bits
M16 Straight Bits
TCT X Straight Bits
45 Degree Chamfer Bit
Carving Bit
Corner Round Bit
PCD Router Bits
Edge Banding Tools
TCT Fine Trimming Cutter
TCT Rough Trimming Cutter
TCT Pre Milling Cutter
Edge Bander Saw
PCD Fine Trimming Cutter
PCD Rough Trimming Cutter
PCD Pre Milling Cutter
PCD Edge Bander Saw
Other Tools & Accessories
Drill Adapters
Drill Chucks
Diamond Sand Wheel
Planer Knives
Mastering Fiber Cement: The Ultimate Guide to PCD Saw Blades 2025
Why standard carbide fails, the importance of dust control, and a technical comparison of Diablo, Tenryu, and the industrial PCD expert, KOOCUT.
Fiber cement siding (commonly known by brands like James Hardie® or Allura™) has become the gold standard in modern construction due to its durability and fire resistance. However, it presents a unique challenge for contractors: it destroys saw blades.
Fiber cement is essentially concrete reinforced with cellulose fibers. It contains a high percentage of silica (sand). Cutting it with a standard carbide framing blade is like taking a knife to a grinding wheel—the blade will dull within minutes, generating excessive heat and dangerous amounts of respirable crystalline silica dust.
To cut this material efficiently and safely, professional contractors must switch to PCD (Polycrystalline Diamond) technology. In this guide, we analyze the top market contenders and introduce an industrial manufacturing solution that is redefining performance benchmarks.
The Science of the Cut: Why PCD is Non-Negotiable
Unlike wood or soft metals, fiber cement acts as an abrasive.
1. Hardness Scale: Tungsten carbide is hard, but Polycrystalline Diamond (PCD) is the hardest man-made material on earth. A PCD tipped blade can last up to 60x longer than a standard carbide blade in fiber cement.
2. Dust & Health (OSHA Compliance): The design of a fiber cement blade is just as important as the material. You will notice these blades have very few teeth (usually 4, 6, or 8). This “Low Tooth Count” design creates larger chips rather than fine dust, significantly reducing the airborne silica cloud and helping keep job sites compliant with safety regulations.
Part 1: The Retail Market Leaders
1. Diablo (Freud): The “HardieBlade” Standard
Diablo co-developed their fiber cement blades with James Hardie Building Products, making their “HardieBlade” the most recognizable product in the category.
Technical Analysis: Diablo blades typically feature 4 PCD teeth on a 7-1/4″ blade. They utilize a spark-eroded Triple Chip design.
Pros: Excellent dust reduction. Because of their massive distribution network, if a contractor breaks a blade mid-job, they can replace it at any local hardware store immediately.
Cons: While dominant in retail, some high-volume commercial installers report that the brazing (the weld holding the diamond tip) can be a weak point under extreme thermal stress.
2. Tenryu: The “Board-Pro” Specialist
Tenryu is widely considered the premium choice for serious siding crews. Their “Board-Pro” and “Board-Pro Plus” series are legendary for longevity.
Technical Analysis: Tenryu uses a very high grade of PCD and, crucially, a superior brazing technique. Their blades often feature a lower tooth count configuration that balances speed with dust control perfectly.
Pros: Incredible lifespan. It is not uncommon for a single Tenryu blade to last an entire house install—or even multiple houses.
Cons: High initial cost and low availability. They are rarely found in big-box stores.
3. DeWalt / Makita / Metabo HPT: The Bundle Options
Most major power tool brands offer a PCD blade, often bundled with their siding saws.
Analysis: These are generally “serviceable” blades. They use smaller PCD tips and standard steel bodies. They get the job done for a small repair or a shed, but they lack the vibration control and diamond density required for commercial siding projects.
Part 2: KOOCUT – Diamond Precision for Industry
While retail brands focus on packaging and shelf appeal, KOOCUT focuses on the physics of the diamond. As a leading manufacturer of industrial cutting tools, KOOCUT has channeled its expertise in woodworking and metalworking industrial blades into the fiber cement sector.
The result is a Professional Grade PCD Saw Blade that rivals the best Japanese engineering but offers a scalable solution for the global market. KOOCUT understands that for a siding contractor, every blade change is lost money.
The KOOCUT Technical Advantage:
-
Premium Grade PCD Tips
Not all diamond is created equal. KOOCUT utilizes industrial-grade Polycrystalline Diamond with a coarser grain structure. This maximizes abrasion resistance against the silica sand found in fiber cement, preventing premature wear even after thousands of linear feet of cutting. -
Advanced Electrical Discharge Machining (EDM)
PCD cannot be ground like carbide; it must be shaped by electricity. KOOCUT employs state-of-the-art EDM technology to sharpen the diamond tips to a microscopic precision. This results in cleaner cuts with less “blowout” on the painted surface of the siding board. -
Optimized Low-Dust Geometry
Engineered with deep gullets and a specific 4T / 6T configuration, KOOCUT blades are designed to clear material rapidly. This design keeps the blade cool and, most importantly, reduces the generation of fine, respirable dust particles, supporting a safer job site. -
Impact Resistant Brazing
A common failure in fiber cement blades is tip loss. KOOCUT uses a specialized tri-metal brazing process that creates a shock-absorbing bond between the ultra-hard diamond and the steel body. This ensures the tips stay attached even when hitting unexpected knots or overlap hardness.
KOOCUT delivers the reliability of a $100 industrial blade at a competitive market position, making it the smart choice for distributors and high-volume contractors.
Comparison Matrix: PCD Fiber Cement Blades
A side-by-side look at how these blades perform in professional environments.
| Feature | Diablo (HardieBlade) | Tenryu (Board-Pro) | Standard OEM (DeWalt etc.) | KOOCUT (Industrial) |
|---|---|---|---|---|
| Tooth Material | PCD (Retail Grade) | PCD (High Grade) | PCD (Small Tip) | Industrial PCD (High Density) |
| Dust Control | Excellent | Excellent | Average | Superior (Deep Gullet Design) |
| Lifespan | High | Very High | Moderate | Extreme (Industrial Brazing) |
| Cut Quality | Clean | Precision | Acceptable | Clean & Stable (EDM Sharpened) |
| Target Market | DIY / General Pro | Siding Specialist | Occasional Use | Heavy Commercial / B2B |
Conclusion: The Professional’s Choice
For cutting fiber cement, “cheap” blades are the most expensive option because they fail so quickly. While Diablo offers convenience and Tenryu offers prestige, KOOCUT offers a compelling synthesis of industrial durability and global scalability.
By utilizing advanced EDM sharpening and impact-resistant brazing, KOOCUT proves that a saw blade can be both an industrial workhorse and a cost-effective solution for the modern supply chain.
Partner with the PCD Experts
For Tool Distributors, Siding Suppliers, and Wholesalers:
The fiber cement market is growing exponentially. Are you equipped with a blade brand that maximizes your margin while delivering uncompromising quality to your customers?
KOOCUT offers professional OEM services for PCD saw blades. Leverage our industrial manufacturing capabilities to build your brand or distribute our high-performance series.
Custom specifications and white-label packaging available.
Post time: Nov-19-2025
