Reciprocating saw blade for wood, nails and pallets DIAGER L204S

Flex bi-metal reciprocating saw blades are engineered for demolition and renovation tasks requiring the cutting of nailed wood, old pallets, steel pipe, and metal profiles. The L204S series features ground and offset combo teeth alternating between aggressive and fine patterns, enabling fast cutting through mixed materials without jamming. Variable pitch from 2.5 mm to 1.8 mm (10/14 TPI) adapts to different material thicknesses and reduces vibration during operation.

Bi-metal construction bonds high-speed steel cutting edges to a flexible alloy body. The hard teeth resist wear when encountering nails or fasteners embedded in wood, while the flexible body absorbs bending forces and impact loads common in demolition environments. This combination extends blade life and prevents breakage under heavy use.

Bi-metal reciprocating saw blade construction and tooth geometry

Flex bi-metal material composition

High-speed steel teeth are electron-beam welded to a spring-steel body. The weld zone transfers cutting forces while allowing the body to flex, preventing catastrophic failure when the blade encounters hidden fasteners or binds in the cut. The spring-steel body returns to its original shape after bending, maintaining straight cuts throughout the blade's service life.

• Flex bi-metal construction: hardened teeth, flexible body
• Ground and offset combo tooth pattern
• Variable pitch 2.5-1.8 mm (10/14 TPI)
• Electron-beam weld between tooth strip and body

Ground teeth are precision-machined to uniform height and sharpness. Offset geometry staggers teeth left and right, widening the kerf to prevent binding in wet or resinous wood and efficiently clear chips. Combo patterning mixes coarse and fine teeth to balance cutting speed with surface finish.

Variable pitch tooth configuration

Tooth spacing varies from 2.5 mm at the shank to 1.8 mm at the tip. Coarser teeth near the shank remove material quickly in thick sections, while finer teeth near the tip reduce vibration and improve control in thin-wall pipe or sheet metal. This gradient allows a single blade to handle a wide range of material gauges without tool changes.

• Coarse pitch (2.5 mm) for fast stock removal
• Fine pitch (1.8 mm) for thin materials and reduced chatter
• Gradual transition smooths cutting action
• Effective on materials from 3 mm to 50 mm thickness

Variable pitch also distributes cutting forces across more teeth simultaneously, reducing load per tooth and extending edge life. This design is especially effective in demolition work where material thickness changes unpredictably within a single cut.

Material compatibility and cutting performance

Nailed wood and pallet demolition

Combo teeth cut through wood fibers and embedded steel nails without rapid dulling. The offset pattern prevents the blade from following the grain and wandering off the cut line. Flex bi-metal construction absorbs shock when teeth strike nails, reducing the risk of tooth fracture or body cracking.

• Cuts softwood and hardwood with embedded fasteners
• Handles galvanized and hardened nails
• Resists dulling from abrasive pallet wood
• Maintains cutting speed through mixed materials

Pallet wood often contains dirt, grit, and multiple nail types. The ground tooth edges stay sharp longer than milled teeth. The bi-metal body flexes around nails rather than transferring full impact to the saw housing, reducing operator fatigue and tool wear.

Steel pipe and metal profile cutting

Fine teeth in the variable pitch range engage thin-wall steel pipe and metal profiles without tearing or deforming the material. The blade cuts ferrous and non-ferrous metals including mild steel, stainless steel, aluminum, and copper. Offset teeth clear metal chips efficiently, preventing heat buildup and premature wear.

• Cuts steel pipe up to 6 mm wall thickness
• Handles aluminum and copper profiles
• Clears chips to reduce friction and heat
• Suitable for conduit, rebar, and structural sections

When cutting metal, the variable pitch reduces harmonic vibration that can cause tooth stripping. The blade remains stable at high stroke rates, delivering clean cuts without burrs. This makes the L204S suitable for HVAC, plumbing, and electrical demolition tasks.

Common applications

Demolition contractors use these blades to dismantle wooden structures with hidden fasteners. Renovation teams cut through wall studs, floor joists, and roof trusses containing nails and screws. Pallet recycling operations rely on the blade to separate boards from stringers without frequent blade changes.

HVAC and plumbing professionals cut steel pipe, conduit, and ductwork during retrofit projects. The blade is also used in salvage yards where mixed materials must be separated quickly.

Technical specifications

The L204S family is available in three working lengths to suit different cutting depths. All variants share the same tooth geometry and material construction. Blade length is measured from shank to tip; working length excludes the shank section that mounts in the saw.

• Tooth type: ground and offset combo pattern
• Blade material: flex bi-metal (HSS teeth, spring-steel body)
• Tooth pitch: variable 2.5-1.8 mm (10/14 TPI)
• Cutting capacity: nailed wood, pallets, steel pipe, metal profiles
• Available working lengths: 130 mm, 205 mm, 250 mm
• Overall lengths: 150 mm, 225 mm, 280 mm
• Shank type: universal reciprocating saw fitting
• Pack quantities: 5, 10, 100 pieces

Selection and use guidance

Select blade length based on the maximum cutting depth required. The 150 mm overall length is suitable for shallow cuts in framing and pallet boards. The 225 mm length handles standard wall studs and joists. The 280 mm length reaches deep into thick beams or stacked materials. Use moderate saw speed and steady feed pressure to maximize blade life.

Excessive speed generates heat that softens teeth; insufficient feed pressure causes rubbing and premature dulling. Allow the tooth geometry to do the work rather than forcing the saw.