Product Description
CMT JS1222VF-5 Reciprocating Saw Blades for Wood and Metal are 12-inch bi-metal (BIM) sabre saw blades engineered for demanding demo and remodel cuts through wood with embedded nails, sheet metal, aluminum profiles, and fiberglass. Sold as a 5-piece set, these blades feature a variable 10-14 TPI tooth configuration that aggressively handles mixed-material cuts up to 10 inches thick - making them a versatile choice for contractors and trades professionals who regularly switch between wood framing and light metal cutting on the same job site.
Key Features
- Bi-Metal (BIM) Construction - bonds high-speed steel teeth to a flexible spring-steel back, delivering wear resistance and long cutting life in both wood and metal applications without blade fracture under flex stress.
- Variable 10-14 TPI Progressive Tooth Pattern - the 1.8-2.6mm tooth distance optimizes chip clearance and cutting speed across multiple material types, reducing blade swaps when moving between wood framing and sheet metal or aluminum profiles.
- 11-Inch Cutting Length on a 12-Inch Blade - provides a generous usable cutting stroke for deep passes through thick stock, reaching materials up to 10 inches thick without bottoming out on the shank.
- 0.035-Inch Blade Thickness - a slim kerf reduces cutting resistance and heat buildup, which extends blade life in continuous-use applications like demo work or HVAC rough-in cuts through mixed materials.
- Cuts Wood with Nails, Sheet Metal, Aluminum Profiles, and Fiberglass - a single blade handles multiple substrate types including glass fiber and epoxy composites, reducing the number of blade types a crew needs to carry on site.
- 5-Piece Pack Quantity - stocking multiple blades at once keeps cuts moving on high-volume jobs and demo projects where individual blades wear more quickly from nail strikes and metal contact.
Why This Product
- The 10-14 variable TPI design is specifically suited for mixed-material cutting - one blade transitions from wood framing with embedded nails directly into sheet metal or aluminum profiles without requiring a tool change, saving time on complex demo and renovation tasks.
- At 11 inches of usable cutting depth on a 12-inch blade, this BIM reciprocating blade reaches deep into wall assemblies, structural members, and thick aluminum extrusions up to 10 inches - work that shorter blades cannot complete in a single pass.
- The flexible bi-metal body is built to survive contact with hidden fasteners and irregular mixed-material cuts that would snap a rigid blade, making it a practical choice for demolition and rough-in work where material content is unpredictable.
- Purchasing in a 5-piece set ensures a ready supply of blades for extended projects, reducing the downtime and cost of sourcing individual replacement blades mid-job when cutting through abrasive materials like fiberglass and metal.
Specifications
- Manufacturer Part Number: JS1222VF-5
- Brand: CMT Orange Tools
- Total Length: 12"
- Cutting Height: 11"
- Cutting Depth: 19mm
- Teeth Thickness: 0.035"
- Number of Teeth: 1.8 - 2.6 TS
- Teeth Per Inch: 10-14 TPI (variable)
- Maximum Material Thickness: less than 10"
- Blade Material: BIM (Bi-Metal)
- Quantity: 5-Piece
Approved Applications
- Cutting wood with embedded nails (up to 10 inches thick)
- Sheet metal cutting
- Aluminum profile cutting
- Fiberglass and glass fiber composite cutting
- Demo and renovation cuts through mixed wood and metal materials
What's Included
- 5x CMT JS1222VF BIM Reciprocating Saw Blades - 12" x 10-14 TPI
Frequently Asked Questions
What materials can these reciprocating saw blades cut through?
These BIM blades are designed to cut wood with embedded nails, sheet metal, aluminum profiles, and fiberglass or glass fiber composites. They handle mixed-material cuts in a single blade, making them well suited for demolition, renovation, and rough-in work where material content varies.
What is the maximum material thickness these blades can handle?
According to the product specifications, these blades are rated for materials with a maximum thickness of less than 10 inches (250mm). The 11-inch usable cutting length supports deep passes through thick stock within that range.
What does BIM mean, and why does it matter for cutting performance?
BIM stands for bi-metal - a construction method that bonds high-speed steel teeth to a flexible spring-steel blade body. The combination provides the tooth hardness needed to cut metal and hardwood while the flexible back resists cracking under the bending stress typical of reciprocating saw use, particularly during demo cuts where the blade contacts irregular or embedded fasteners.
Why does this blade use a variable 10-14 TPI tooth pattern instead of a fixed TPI?
The variable 10-14 TPI pattern, with a tooth distance of 1.8-2.6mm, is engineered to optimize performance across different material types in a single blade. Lower TPI zones clear chips efficiently in wood cuts, while higher TPI zones provide cleaner, more controlled cuts in sheet metal and aluminum profiles - reducing the need to swap blades between materials on the same job.
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