CMT ITK Plus Diamond Saw Blade for Fiber Cement - 210mm, 12-Tooth TCG is a professional-grade circular saw blade engineered specifically for cutting ultra-hard building materials like fiber cement siding, Eternit panels, and plasterboard. Diamond-tipped teeth with a Triple Chip Grind geometry deliver clean, chip-free cuts through abrasive cementitious sheet materials, dramatically outlasting conventional carbide tooling. With a 210mm diameter and 30mm bore, this metric blade is compatible with portable circular saws, miter saws, radial arm saws, and stationary table saws - including Festool track saw systems - making it a versatile solution for contractors and installers working with fiber cement products in the field or the shop.

Key Features

• ITK Plus Diamond Tooth Technology - diamond-tipped teeth are engineered specifically for cutting fiber cement and similarly ultra-hard materials, providing dramatically longer service life than standard carbide teeth and reducing blade change frequency on demanding job sites.
• Triple Chip Grind (TCG) Tooth Geometry - the TCG sharpening pattern is optimized for dense, abrasive sheet materials like fiber cement and plasterboard, producing clean cuts without chipping, cracking, or blowout along the cut edge.
• 12-Tooth Configuration - the low tooth count accelerates feed rate and reduces heat buildup when crosscutting and ripping through fiber cement panels, helping maintain consistent cut quality over extended use.
• 12 deg. Cutting Angle - the positive hook angle improves chip clearance and cutting efficiency in abrasive cementitious materials, reducing strain on the saw motor.
• 2.4mm Kerf / 1.8mm Plate Thickness - the optimized kerf-to-plate ratio minimizes material waste while maintaining blade stability and reducing vibration during the cut.
• 30mm Bore with 2/7/42 Pin Hole Pattern - the metric bore and pin hole configuration ensures precise, secure mounting on a wide range of European and metric-arbor machines, including Festool-compatible equipment.
• Compatible with Festool and Major Metric-Arbor Machines - designed for use with portable circular saws, miter saws, radial arm saws, and table saws, giving contractors flexibility across multiple tool platforms on the same job site.

Why This Product

• Fiber cement is one of the most abrasive building materials a saw blade can encounter - this blade's diamond-tipped ITK Plus teeth are purpose-built for exactly that challenge, lasting far longer than carbide alternatives on materials like HardiePlank, Swisspearl, Fermacell, Ivarplank, and Eternit.
• The TCG tooth form is not a general-purpose geometry - it is specifically selected for fiber cement and plasterboard cutting, which means cleaner edges, less material cracking, and less finishing work after the cut.
• The 210mm metric diameter and 30mm bore with a 2/7/42 pin hole pattern make this blade a direct fit for Festool and other metric-arbor circular saws, eliminating the adapter ring workarounds often needed with inch-based blades.
• With compatibility across portable circular saws, miter saws, radial arm saws, and table saws, a single blade covers the full range of crosscutting and ripping tasks encountered during fiber cement siding and panel installation.

Specifications

• Manufacturer Part Number: 236.210.12M
• Brand: CMT Orange Tools
• Blade Diameter: 210mm
• Number of Teeth: 12
• Bore Diameter: 30mm
• Pin Hole: 2/7/42
• Tooth Grind Type: TCG (Triple Chip Grind)
• Cutting Angle: 12 deg.
• Teeth Thickness (Kerf): 0.094"
• Plate Thickness: 0.071"
• Tooth Material: DP (Diamond)
• Blade Series: ITK Plus

Approved Applications

• Cutting fiber cement siding, panels, and boards
• Cutting plasterboard and Eternit sheet materials
• Crosscutting and ripping ultra-hard building materials
• Use with Festool-compatible track saw and circular saw systems
• Use with portable circular saws, miter saws, radial arm saws, and stationary table saws

Frequently Asked Questions

Will this blade fit my Festool circular saw?

Yes. This blade features a 210mm diameter and a 30mm bore with a 2/7/42 pin hole pattern, which is the standard metric configuration used by Festool and other European-platform portable circular saws. No adapter rings or modifications are required for compatible metric-arbor machines.

Why does a fiber cement blade need diamond teeth instead of carbide?

Fiber cement is an extremely abrasive composite material that rapidly degrades standard carbide cutting edges. The ITK Plus diamond tooth technology used in this blade is engineered specifically for ultra-hard materials like fiber cement, plasterboard, and Eternit, providing significantly longer blade life and more consistent cut quality compared to carbide-tipped alternatives on these materials.

What is a Triple Chip Grind and why does it matter for fiber cement?

A Triple Chip Grind (TCG) alternates between a flat-topped tooth and a chamfered trapeze tooth. This geometry is particularly effective for brittle, dense materials like fiber cement and plasterboard because it shears the material progressively, reducing the impact forces that cause edge chipping, cracking, or blowout along the cut line.

Can this blade be used on a stationary table saw as well as a handheld circular saw?

Yes. The CMT 236.210.12M is compatible with portable circular saws, miter saws, radial arm saws, and stationary table saws, provided those machines accept a 210mm (approximately 8-1/4 in.) blade with a 30mm bore. Always verify your machine's blade diameter and arbor specifications before mounting.