The Definitive Guide to Reciprocating Saw Blades: Engineering, Application, and Selection

1. Introduction: The Engine of Demolition

The reciprocating saw is often called the "king of demolition." Professionals rely on it for everything from framing to plumbing. However, the saw itself is just the engine. The blade is the tyre that meets the road.

Without the correct blade, even the most expensive saw is useless. Using the wrong blade leads to snapped shanks, ruined materials, and dangerous kickbacks. Conversely, the right blade transforms a rough demolition tool into a precision instrument.

This guide goes beyond basic selection. We will analyse metallurgical compositions, dissect tooth geometry, and define the physics of chip evacuation.

Our goal is to elevate your knowledge from basic user to industry expert. We will also highlight the manufacturing excellence of (https://www.johnsontoolscn.com/), a global leader in OEM/ODM blade solutions with over 20 years of experience.

2. The Physics of Reciprocating Cutting

2.1 The Linear Stroke Mechanism

Circular saws cut with continuous momentum. Reciprocating saws are different. They rely on a violent push-and-pull stroke. This linear motion creates unique physical stresses on the metal.

The blade must withstand opposing forces. It faces compression on the push stroke and tension on the pull stroke. This cycle repeats thousands of times per minute (SPM).

The standard stroke length ranges from 1-1/8" to 1-1/4". This distance is critical. It defines how many teeth enter and exit the cut with each cycle.

A blade that is too short is dangerous. If the tip does not clear the material on the backstroke, debris packs into the gullets. This "chip packing" generates immense heat. It ruins the blade's temper instantly.

A blade that is too long is unstable. Excess length acts as a lever arm. It increases vibration at the tip. This "whip" effect reduces accuracy and increases the risk of the blade buckling.

2.2 Chip Load and Evacuation

Sawing is not slicing; it is chiselling. Each tooth acts as a tiny chisel. It gouges out a small chip of material.

The gullet is the valley between the teeth. It acts as a bucket. It must carry the chip out of the kerf (the cut slot).

Chip evacuation limits your cutting speed.

• In Wood: Chips are large and fibrous. They require deep, spacious gullets. If the gullet is too small, the wood compresses. The blade binds, friction spikes, and the wood burns.

• In Metal: Chips are small and hot. They require shallow, reinforced gullets. The primary goal is to shear the metal without snapping the tooth.

2.3 Harmonic Vibrations

Physics dictates that every object has a natural frequency. When a constant-pitch blade cuts hard metal, it can establish a rhythm. This creates a harmonic resonance.

Operators feel this as "chatter." The blade bounces violently against the workpiece. It screams with noise and leaves a washboard finish.

Variable Pitch Technology solves this.

Engineers design blades with shifting TPI patterns (e.g., 10/14 TPI). The distance between teeth constantly changes. This disrupts the harmonic wave. The blade never settles into a destructive rhythm, resulting in a smoother, cooler cut.

3. Metallurgical Composition: The Backbone of Performance

Blade Materials: HCS, HSS, Bi-Metal, Carbide and Diamond Grit

The performance of a reciprocating saw blade depends heavily on the material used in its body and cutting edge. Blade material affects flexibility, heat resistance, tooth durability, cutting speed, and the types of materials the blade can handle.

For contractors, distributors, and professional tool buyers, choosing the correct blade material is just as important as selecting the right blade length and TPI.

The most common materials used in reciprocating saw blades include High Carbon Steel (HCS), High-Speed Steel (HSS), Bi-Metal, Tungsten Carbide, and Diamond Grit.

3.1 High Carbon Steel (HCS) Reciprocating Saw Blades

High Carbon Steel reciprocating saw blades, commonly called HCS reciprocating saw blades, are flexible and economical blades designed primarily for cutting softer materials.

Because the steel body can flex without breaking easily, HCS blades are well suited to general woodworking and light-duty applications.

Key characteristics:

• High flexibility

• Good resistance to bending

• Economical for general cutting

• Suitable for softer materials

• Lower heat resistance than bi-metal or carbide blades

Best applications:

• Softwood

• Plywood

• Plastic

• PVC

• Light construction materials

• General DIY cutting

For users looking for a reciprocating saw blade for wood, an HCS blade with a relatively low TPI is often a practical choice.

Common search applications include:

• HCS reciprocating saw blade for wood

• wood cutting reciprocating saw blade

• reciprocating saw blade for plywood

• reciprocating saw blade for plastic

• low TPI reciprocating saw blade for wood

HCS blades are not generally recommended for continuous metal cutting because the teeth lose hardness more quickly under high heat.

If the application involves wood with nails, demolition work, or mixed wood-and-metal materials, a bi-metal reciprocating saw blade is usually a better option.

3.2 High-Speed Steel (HSS) Cutting Edges

High-Speed Steel, or HSS, provides greater hardness and heat resistance than ordinary carbon steel.

HSS contains alloying elements such as tungsten, molybdenum, chromium, and other elements that help the cutting edge retain hardness at elevated temperatures.

For reciprocating saw blades, HSS is most commonly used as part of a bi-metal blade construction rather than as a full blade body.

Key characteristics:

• High hardness

• Good wear resistance

• Better heat resistance than HCS

• Maintains a sharp cutting edge for longer

• Less flexible than spring steel or HCS

Because reciprocating saws generate repeated bending loads, a fully hardened HSS blade would generally be too brittle for demanding demolition work.

Instead, manufacturers combine the hard HSS cutting edge with a flexible backing material.

This provides the foundation for the widely used bi-metal metal cutting reciprocating saw blade.

3.3 Bi-Metal Reciprocating Saw Blades

Bi-metal reciprocating saw blades are among the most widely used blades for metal cutting and demolition applications.

A bi-metal blade combines two different materials:

• A flexible spring-steel or alloy-steel backing

• A hardened HSS tooth strip

The hard tooth edge provides cutting performance, while the flexible blade body helps resist breakage during demanding reciprocating motion.

Depending on the manufacturing process, the HSS tooth strip may be joined to the backing using specialized welding technology before the teeth are formed.

Premium bi-metal blades may use cobalt-alloyed HSS tooth materials to improve heat and wear resistance.

Best applications:

• Mild steel

• Steel pipe

• Sheet metal

• Nails

• Wood with nails

• Metal demolition

• Automotive dismantling

• General-purpose construction

This makes bi-metal one of the most important materials for a metal cutting reciprocating saw blade.

Relevant product and long-tail keywords include:

• bi metal reciprocating saw blade

• metal cutting reciprocating saw blade

• reciprocating saw blade for steel pipe

• reciprocating saw blade for sheet metal

• reciprocating saw blade for wood with nails

• demolition reciprocating saw blade

• cobalt reciprocating saw blade

• 14 TPI reciprocating saw blade for metal

• 18 TPI reciprocating saw blade for thin metal

For example, lower-to-medium TPI bi-metal blades are commonly selected for demolition and thicker metal, while higher-TPI blades are better suited to thinner steel sections and sheet metal.

For distributors and OEM buyers, bi-metal blades are often available in different lengths, TPI ranges, body thicknesses, tooth shapes, coatings, and packaging configurations.

3.4 Tungsten Carbide Reciprocating Saw Blades

Carbide reciprocating saw blades are designed for applications where conventional bi-metal blades wear too quickly.

Tungsten carbide is significantly harder and more wear-resistant than standard steel cutting edges.

Depending on the blade design, carbide may be applied as:

• Individual carbide teeth

• Carbide-tipped teeth

• Carbide tooth strips

These cutting structures are joined to a strong steel blade body to provide both durability and cutting stability.

Best applications can include:

• Cast iron

• Stainless steel

• High-strength alloys

• Hardened fasteners

• Abrasive construction materials

• Fiber cement

• Aerated concrete

• Hollow brick

• Masonry applications

For demanding metal applications, search terms often include:

• carbide reciprocating saw blade

• tungsten carbide reciprocating saw blade

• reciprocating saw blade for cast iron

• reciprocating saw blade for stainless steel

• carbide sawzall blade for metal

• heavy duty reciprocating saw blade

For masonry applications, carbide blades can use very different tooth geometries and much lower TPI.

For example, a 12-inch 2 TPI carbide reciprocating saw blade for masonry can be designed for cutting:

• Porous aerated concrete

• AAC blocks

• Hollow brick

• Fiber cement

• Drywall and similar construction materials

This creates another important keyword group:

• masonry reciprocating saw blade

• carbide reciprocating saw blade for aerated concrete

• reciprocating saw blade for AAC block

• reciprocating saw blade for hollow brick

• 2 TPI carbide reciprocating saw blade

• 12 inch masonry reciprocating saw blade

For professional buyers, carbide blade selection should be based on the target material, tooth geometry, blade thickness, machine power, and required cutting speed rather than carbide alone.

3.5 Diamond Grit Reciprocating Saw Blades

Diamond grit reciprocating saw blades use an abrasive cutting edge instead of conventional saw teeth.

Industrial diamond particles are bonded to the cutting edge, allowing the blade to grind through hard and brittle materials.

These blades are commonly used where toothed blades are unsuitable.

Typical applications include:

• Ceramic tile

• Porcelain

• Glass

• Fiberglass

• Cast iron in certain blade designs

• Abrasive construction materials

Diamond grit blades generally cut more slowly than aggressive toothed blades, but they can provide controlled cutting in hard, brittle, or abrasive materials.

Relevant keywords include:

• diamond grit reciprocating saw blade

• diamond reciprocating saw blade

• reciprocating saw blade for tile

• reciprocating saw blade for porcelain

• reciprocating saw blade for glass

• diamond sawzall blade

• abrasive reciprocating saw blade

When edge quality and material compatibility are more important than maximum cutting speed, a diamond grit blade can be an effective solution.

Quick Comparison: Reciprocating Saw Blade Materials

For OEM and wholesale customers, Johnson Tools can supply different reciprocating saw blade materials, blade lengths, TPI configurations, tooth designs, body thicknesses, coatings, logos, and private-label packaging according to the target market and application.

Material Selection Matrix

4. Tooth Geometry and Configuration

4.1 TPI (Teeth Per Inch) Strategy

TPI is the defining metric for blade selection. It controls the balance between speed and finish.

Low TPI (3-6):

• Design: Huge teeth. Massive gullets.

• Action: Aggressive gouging.

• Application: Demolition wood, tree pruning, rough lumber.

• Physics: The deep gullets eject large sawdust chips to prevent binding.

Medium TPI (8-14):

• Design: Balanced tooth size.

• Action: Controlled cutting.

• Application: "The Demolition Sweet Spot." Use for nail-embedded wood, thick pipes, and structural steel.

• Benefit: Aggressive enough for wood but fine enough to not snag on nails.

High TPI (18-24+):

• Design: Tiny teeth. Shallow gullets.

• Action: Shearing and grinding.

• Application: Thin sheet metal, conduit, tubing.

• Benefit: Produces a smooth finish and reduces vibration in thin materials.

4.2 The Rule of Three

Memorise this rule for metal cutting:

At least three teeth must be in contact with the material at all times.

The Consequence of Failure:

If fewer than three teeth engage, the material falls into the gullet. The blade "straddles" the metal. On the next stroke, the tooth slams into the edge of the metal.

Result: The tooth shears off violently. The blade is ruined instantly.

4.3 Tooth Set Patterns

The "set" is the bend of the teeth. Teeth are bent left and right to create a kerf wider than the blade body. This reduces friction.

• Raker Set: A repeating pattern of Left-Right-Straight.

  • The straight tooth (raker) acts as a cleaner. It removes the centre chip.

  • Best For: Aggressive wood cutting and thick metals.

• Wavy Set: Teeth are set in a gradual, flowing wave.

  • This distributes stress across multiple teeth.

  • Best For: Thin metals and pipes. It prevents tooth stripping.

• Variable Set: Used in variable pitch blades. It optimizes cutting across different vibration frequencies.

4.4 Rake Angle (Hook Angle)

The angle of the tooth face determines the "bite."

• Positive Rake: The tooth leans forward.

  • Action: It pulls the blade into the material.

  • Use: Fast wood cutting. It is self-feeding.

• Neutral/Negative Rake: The tooth stands straight or leans back.

  • Action: It scrapes or shears.

  • Use: Hard metals and ceramics. It prevents the brittle tip from snapping under shock loads.

5. Reciprocating Saw Blades for Wood: Pruning, Demolition and Pallet Cutting

Choosing the right reciprocating saw blade for wood depends on more than the type of timber.

Fresh green wood, construction lumber, nail-embedded wood, and pallets all create different cutting conditions. Blade TPI, tooth geometry, blade thickness, material, and gullet design should be matched to the application.

For professional users and distributors, the most common wood-cutting blade categories include:

• Pruning reciprocating saw blades

• Wood cutting reciprocating saw blades

• Demolition reciprocating saw blades

• Reciprocating saw blades for wood with nails

• Pallet dismantling reciprocating saw blades

5.1 Pruning Reciprocating Saw Blades for Green Wood

Fresh branches and green wood contain high levels of moisture and sap. During cutting, wet sawdust can accumulate between the teeth and reduce cutting efficiency if the blade has insufficient chip clearance.

For this reason, a pruning reciprocating saw blade normally uses a coarse tooth pattern and large gullets to remove wet wood chips quickly.

A low TPI design is generally preferred.

Recommended specification:

• 3–5 TPI reciprocating saw blade

• Large, deep gullets

• Aggressive tooth geometry

• Long blade for larger branches

• Flexible or reinforced steel body depending on application

Relevant product keywords include:

• pruning reciprocating saw blade

• reciprocating saw blade for tree branches

• wood pruning sawzall blade

• 3 TPI reciprocating saw blade for wood

• 5 TPI reciprocating saw blade

• reciprocating saw blade for green wood

• reciprocating saw blade for tree roots

HCS Pruning Blades

An HCS reciprocating saw blade for wood is suitable for clean branches, softwood, and general pruning where no metal, soil, or abrasive debris is present.

HCS blades provide:

• Good flexibility

• Fast wood cutting

• Low cost

• Suitable performance for clean timber

Bi-Metal Pruning and Root-Cutting Blades

For pruning near the ground, roots and lower branches may contain dirt, sand, small stones, or hidden wire.

In these conditions, a bi-metal reciprocating saw blade for pruning can provide greater tooth durability and better resistance to accidental contact with abrasive debris.

For root cutting, blade durability is often more important than maximum cutting speed.

5.2 Reciprocating Saw Blades for Structural Lumber and Demolition

Demolition work is very different from cutting clean lumber.

Old walls, studs, roof structures, and framing materials may contain:

• Nails

• Screws

• Staples

• Bolts

• Metal brackets

• Hidden fasteners

For these applications, a standard wood blade can lose teeth quickly if it contacts metal.

A demolition reciprocating saw blade or reciprocating saw blade for wood with nails is a better choice.

Best Blade for Wood with Nails

Bi-metal blades are widely used for nail-embedded wood because they combine a flexible steel body with a harder metal-cutting tooth edge.

For more demanding demolition work, carbide-tooth blades may provide better durability when cutting through repeated metal fasteners.

Typical specifications include:

• 6–10 TPI

• Bi-metal or carbide teeth

• Thick blade body

• Reinforced tooth geometry

• Longer blade lengths for framing and demolition

Relevant keywords include:

• reciprocating saw blade for wood with nails

• demolition reciprocating saw blade

• sawzall blade for wood with nails

• best reciprocating saw blade for demolition

• bi metal reciprocating saw blade for demolition

• carbide reciprocating saw blade for wood with nails

• 6 TPI reciprocating saw blade

• 10 TPI demolition blade

A medium tooth pitch provides a useful balance between wood cutting speed and the ability to cut through occasional nails or screws.

Blade Thickness for Demolition Cutting

Blade thickness is especially important during structural demolition.

Thin blades are flexible and useful in tight spaces, but they can bend or wander when pushed aggressively through framing lumber.

For heavier demolition work, thicker blades such as:

• 0.050"

• 0.062"

can provide better stability and straighter cutting.

A thick-body demolition Sawzall blade is especially useful for:

• Wall studs

• Roof framing

• Floor joists

• Timber with embedded nails

• Heavy renovation work

Relevant long-tail terms include:

• thick reciprocating saw blade for demolition

• 0.050 reciprocating saw blade

• 0.062 demolition reciprocating saw blade

• heavy duty Sawzall blade for wood and metal

Cutting Through Nails and Screws

When the blade reaches a nail, screw, or metal fastener, avoid forcing the saw aggressively.

Instead:

• Reduce feed speed

• Keep the blade aligned

• Allow the teeth to cut through the metal gradually

• Avoid excessive side pressure

For frequent fastener cutting, choose a bi-metal or carbide reciprocating saw blade for wood and metal rather than a pure wood-cutting HCS blade.

5.3 Pallet Dismantling Reciprocating Saw Blades

Pallet dismantling is one of the most demanding wood-cutting applications for a reciprocating saw blade.

Pallets typically combine:

• Dry hardwood or softwood

• Nails

• Spiral-shank nails

• Staples

• Dirty or weathered wood

This combination can quickly damage ordinary wood blades.

For this reason, professional users often choose a pallet dismantling reciprocating saw blade designed specifically for cutting through both wood and fasteners.

Relevant keywords include:

• pallet dismantling reciprocating saw blade

• reciprocating saw blade for pallet removal

6. Application-Specific Analysis: Metal

6.1 Thin Sheet Metal and Ductwork

The Danger: Vibration and Snagging.

Large teeth catch on the thin edge of sheet metal. This rips the metal and can jerk the saw violently.

The Solution: High TPI (18-24) Bi-Metal blades.

The wavy set pattern is essential here. It ensures a smooth transition as teeth enter and exit the thin material.

Technique:

• Keep the saw shoe firmly pressed against the sheet. This creates a solid anvil.

• Run the saw at high speed.

• Use low forward pressure. Let the teeth nibble the material.

6.2 Thick Steel (Pipe, Angle Iron, I-Beams)

The Danger: Heat.

Friction generates massive heat in thick steel. If the blade turns blue, the temper is gone.

The Solution: Medium TPI (10-14) Bi-Metal or Carbide.

A 14 TPI blade is the "Goldilocks" choice for heavy-wall pipes. It balances speed and life.

Technique:

• Slow Down: Reduce the saw speed (SPM).

• Lubricate: Cutting oil is mandatory. It reduces friction. It carries heat away. It can double-blade life.

• Rock the Saw: Do not push straight. Rock the saw up and down. This reduces the surface area of contact. It increases pressure on individual teeth for a better bite.

6.3 Cast Iron

The Danger: Brittleness and Abrasion.

Cast iron crumbles. It is extremely abrasive. It turns high-speed steel teeth into rounded nubs in seconds.

The Solution: Diamond Grit or Carbide Grit blades.

Alternatively, use specialised Carbide-Tipped blades (8 TPI).

Avoid standard bi-metal blades. They are a waste of money on cast iron.

Safety Note: Cast iron pipe is heavy and brittle. Secure it thoroughly. It can crack unpredictably during the cut.

6.4 Stainless Steel

The Danger: Work Hardening.

Stainless steel has a unique property. If you rub it without cutting, it hardens. It becomes harder than the blade.

The Solution: Carbide-Tipped blades.

Carbide is harder than work-hardened stainless.

Technique:

• Heavy Feed Pressure: You must force the teeth to bite. Do not let them skate.

• Slow Speed: Keep the heat low.

• Continuous Cut: Do not stop in the middle of a cut. The metal will harden as it cools.

Metal Blade Selection Guide

7. Application-Specific Analysis: Masonry

7.1 Aerated Concrete and Brick

Masonry is sandpaper. It abrades steel instantly.

The Solution: Tungsten Carbide Tipped (TCT) blades.

Look for blades with very low TPI (2-3 TPI).

Design: These blades often have a very wide body (up to 2 inches). This width helps keep the cut straight through thick blocks.

Johnson Tools Solution: (https://www.johnsontoolscn.com/) produces specialised carbide blades engineered to withstand the abrasive matrix of aerated concrete blocks.

7.2 Ceramic and Glass

The Solution: Diamond Grit blades.

These blades grind a fine line.

Technique:

• Water Coolant: Use water to lubricate and cool the cut. This prevents thermal shock that cracks glass.

• High Speed: Run the saw fast.

• Light Pressure: Let the diamonds do the work.

8. Coatings and Surface Treatments

A blade is not just steel. It is a system. Coatings enhance performance significantly.

8.1 Paint and Lacquer

Most blades are painted.

Function: Corrosion resistance during storage.

Reality: The paint rubs off in the first cut. It offers no performance benefit.

8.2 Black Oxide

Appearance: Matte Black.

Function: It creates a porous surface. This holds lubrication oil. It aids in cooling and prevents rust.

Best For: Metal cutting applications.

8.3 Titanium Nitride (TiN)

Appearance: Gold.

Function: It is a ceramic coating. It increases surface hardness. It reduces friction significantly.

Benefit: It prevents chips from welding to the blade (galling). It extends life in high-production metal cutting.

Insight: A TiN coating on a cheap carbon steel blade is useless. Johnson Tools ensures premium coatings are applied only to high-grade alloy substrates.

8.4 Teflon / Non-Stick

Appearance: Black or Grey.

Function: It reduces friction.

Benefit: It prevents sap and pitch from sticking.

Best For: Pruning and cutting wet lumber.

9. Advanced Brand Analysis: Johnson Tools

In the global market, Johnson Tools is a manufacturing powerhouse. They are not just a brand; they are a solution provider.

9.1 Manufacturing Excellence

Johnson Tools leverages over 20 years of expertise. They utilise laser welding technology. This ensures the bond between the HSS cutting edge and the backing steel is perfect. A weak weld leads to catastrophic blade failure. Johnson Tools guarantees structural integrity.

9.2 The Product Ecosystem

Their portfolio covers every professional need:

• Bi-Metal Series: For the general contractor. Tough, flexible, and reliable.

• Carbide Series: For the industrial specialist. Cutting cast iron and stainless steel.

• Diamond & Grit Series: For the mason. Precision cutting in stone and tile.

9.3 OEM/ODM Customisation

This is a critical differentiator. Johnson Tools offers full OEM/ODM services.

Retailers can specify:

• Blade Length.

• TPI Configurations.

• Paint and Branding.

• Packaging.

This allows hardware brands to launch high-quality product lines with confidence.

Connect with Johnson Tools:

• Website: https://www.johnsontoolscn.com/

• Contact Page: https://www.johnsontoolscn.com/contact.html

• Email: Sales@Johnsontoolscn.com

10. Advanced Cutting Techniques

10.1 The Plunge Cut

You need to cut a hole in the middle of a wall. You have no drill.

The Technique:

1. Use a blade with a tapered tip.

2. Rest the shoe on the wall. Tilt the saw so the blade is not touching.

3. Start the saw at full speed.

4. Slowly tilt the saw forward. Use the shoe as a pivot.

5. Let the tip eat its way into the wall.

Warning: Hold the saw tight. Kickback is likely if the blade catches.

10.2 Flush Cutting

You need to trim a pipe flush with the floor.

The Technique:

1. Use a flexible Bi-Metal blade.

2. Insert the blade upside down (teeth facing up).

3. Bend the blade so it runs flat along the floor.

4. Cut the pipe.

Note: Ensure the blade is long enough. If the tip pulls back into the pipe during the stroke, it will catch. This causes violent kickback.

10.3 Speed Control (SPM)

Not all materials require full speed.

• Wood: High Speed (Maximum SPM). Use orbital action if available.

• Metal: Medium/Low Speed. Turn off orbital action.

• Plastics: Low Speed. High speed melts the plastic. The molten plastic welds back together behind the blade.

11. Maintenance and Troubleshooting

11.1 Cleaning Pitch and Resin

Pine resin is the enemy. It builds up on teeth. It causes friction and overheating.

Cleaning:

• Do not use oven cleaner. It damages carbide brazing.

• Do use laundry detergent mixed with water. Soak the blade.

• Scrub with a nylon or brass brush.

• Avoid steel brushes. They dull the sharp edge.

11.2 Preventing Bent Blades

Why do blades bend instantly?

• Cause 1: The tip hits the material before the saw is at speed.

• Cause 2: The blade is too long. It "whips."

• Prevention: Always press the shoe firmly against the work. Enter the cut gently.

11.3 Extending Blade Life

Use the Adjustable Shoe.

Teeth usually wear out near the base first. The rest of the blade is new.

The Trick: Extend the adjustable shoe. This forces the saw to use the fresh teeth in the middle of the blade. You essentially get two blades for the price of one.

Troubleshooting Guide

12. Safety Protocols

Respect the tool. A reciprocating saw is powerful and aggressive.

• Kickback: This happens when the blade binds. The saw bucks back at the operator.

  • Prevention: Secure the workpiece. Never cut loose branches or pipes without clamping.

• Electrical Safety: You are often cutting into walls.

  • Rule: Always check for live wires behind drywall. Use a non-contact voltage tester.

• PPE (Personal Protective Equipment):

  • Eyes: Safety glasses are non-negotiable. Chips fly at high velocity.

  • Ears: These saws are loud (100+ dB). Wear ear protection.

  • Lungs: Demolition dust is toxic. Wear a respirator, especially with masonry.

13. Conclusion

Blade selection is not guesswork. It is physics.

• For Wood: You want Aggression. Use Low TPI. Use deep gullets.

• For Metal: You want Durability. Use High TPI. Use Bi-Metal. Use Oil.

• For Masonry: You want Abrasion. Use Carbide. Use Grit.

The difference between a frustrating job and a profitable job is often the blade. Johnson Tools understands this engineering. They provide the professional grade solutions that contractors rely on.

Don't settle for generic blades. Choose the right tool for the mission.

Upgrade your cutting efficiency today. Visit (https://www.johnsontoolscn.com/) for world-class reciprocating saw solutions.