CMT JS2243HM Special Reciprocating Saw Blade by CMT is an 18-inch carbide-tipped recip saw blade engineered for demanding cuts through fiber cement panels, porous concrete, and similar abrasive construction materials. With a coarse 2 TPI tooth configuration and an extended 18-inch total length, this blade delivers deep, aggressive straight cuts through challenging substrates that would destroy ordinary bi-metal or high-speed steel blades. Sold as a 1-piece unit, it is the go-to choice for contractors and remodelers tackling thick wall assemblies and specialty demolition or renovation work.

Key Features

• Carbide-Tipped (HW/TCT) Teeth - Tungsten carbide tips bonded to the blade body resist the extreme abrasion of fiber cement, porous concrete, and similar hard or gritty materials, maintaining cutting edge integrity far longer than standard steel teeth would in these applications.
• 18-Inch Total Length with 16-Inch Cutting Height - The extended blade length provides access and cutting reach in thick wall assemblies, deep framed sections, or stacked material applications where shorter blades simply cannot reach.
• 2 TPI Coarse Tooth Pattern - The wide tooth spacing clears debris and material aggressively from the cut path, reducing heat buildup and blade loading when working through porous or granular materials like porous concrete and fiber cement board.
• 0.059-Inch Blade Thickness - A precision-ground blade body balances rigidity to resist deflection during heavy-duty cuts with enough lateral strength to handle the shock loads common in demolition and renovation cutting.
• Rated for Materials up to 14 Inches Thick - The blade's geometry and cutting height are specifically sized to handle very thick substrates, making it practical for deep section cuts through thick wall build-ups and masonry-type materials.
• Designed for Special, Fiber Cement, and Porous Concrete Applications - Purpose-built for abrasive specialty materials that require a carbide cutting edge rather than a conventional metal-cutting or wood-cutting reciprocating blade.

Why This Product

• When cutting fiber cement siding, panels, or porous concrete blocks, conventional bi-metal reciprocating blades dull rapidly - the carbide-tipped HW construction of this blade holds an edge through abrasive material that would end a standard blade's useful life in just a few cuts.
• At 18 inches in total length with a 16-inch cutting height, this blade reaches into deep wall assemblies and thick masonry sections that shorter standard recip blades cannot access, reducing the need for multiple passes or tool changes.
• The 2 TPI coarse configuration is matched specifically to porous and granular construction materials - the open tooth geometry self-clears during the cut, keeping the blade moving efficiently rather than binding or overheating in the material.
• This blade handles materials up to 14 inches thick, making it a practical single-tool solution for contractors working through thick framed wall assemblies lined with fiber cement or porous concrete without needing specialty equipment.

Specifications

• Manufacturer Part Number: JS2243HM
• Brand: CMT Orange Tools
• Total Length: 18"
• Cutting Height: 16"
• Cutting Depth: 50mm
• Teeth Thickness: 0.059"
• Number of Teeth: 2 TPI
• Blade Material: HW (Carbide-Tipped)
• Maximum Material Thickness: < 14"
• Quantity: 1-Piece

Approved Applications

• Special cutting applications
• Fiber cement panels and siding
• Porous concrete