Reciprocating Saw Guide: Demolition, Pruning, Plumbing, and Blade Selection

A reciprocating saw is a demolition tool. It tears through framing lumber, cuts pipe, removes old nails, and prunes tree limbs. It does none of these things neatly. If you need a clean, precise cut, use a different saw. If you need to take something apart fast, cut through unknown materials, or work in spaces where no other saw fits, a reciprocating saw is the tool. Also called a "Sawzall" after Milwaukee's long-running brand name, the reciprocating saw is standard equipment for remodelers, plumbers, electricians, and arborists.

When to Reach for a Reciprocating Saw

Demolition is the primary use case. Cutting out walls, removing old framing, taking apart decks, and cutting through nail-studded lumber are all standard reciprocating saw work. The saw does not care about nails, screws, or mixed materials. The right blade handles all of them without hesitation. When you are gutting a bathroom, tearing out a kitchen soffit, or removing an old deck, the reciprocating saw is the first tool out of the bag and the last one put away.

Plumbing work uses reciprocating saws constantly. Cutting cast iron drain pipe, copper supply lines, PVC waste lines, and ABS pipe in tight spaces where no other saw can physically fit is routine. Short blades between 4 and 6 inches work best inside walls, between joists, and under floors. A plumber cutting out old galvanized pipe in a basement ceiling might use a reciprocating saw for every single cut because the pipe runs are too close to joists and subfloor for any other tool.

Tree pruning is a surprisingly effective application. Pruning-specific blades cut through green wood branches up to 8 inches in diameter faster than a hand saw and reach into tight branch crotches where a chainsaw's bar cannot fit. Arborists use reciprocating saws regularly for limb removal in confined spaces, especially near structures where a chainsaw would be dangerous. For homeowners, a reciprocating saw with a pruning blade handles storm damage cleanup, overgrown shrub removal, and branch trimming without buying a dedicated pruning tool.

Flush cutting is another valuable capability. With the shoe pressed against a surface and a flexible blade, you can cut dowels, pipes, bolts, and old fasteners flush with a wall or floor. Some blades are specifically designed for flush-cut work with a curved profile that lets the teeth reach all the way to the shoe. This is useful when removing old railing posts, cutting protruding nails or bolts, and trimming pipe stubs flush with framing.

Stroke Length and Speed

Stroke length is the distance the blade travels back and forth in one complete cycle. Most reciprocating saws have a stroke length between 1 inch and 1-1/4 inches. Longer strokes remove material faster because more teeth engage the workpiece per cycle. However, longer strokes also produce more vibration and make the saw harder to control in tight spaces. For most demolition and general-purpose work, 1-1/8 inches is the standard stroke length that balances speed and control.

Strokes per minute (SPM) range from 0 to approximately 3,000 on most saws. Variable speed control through the trigger is essential and is standard on every quality reciprocating saw. The trigger sensitivity lets you modulate speed on the fly. Full speed for wood demolition where you want to get through material fast. Half speed for metal cutting where too much speed overheats the blade and dulls the teeth. Low speed for controlled cuts near things you want to keep intact, like cutting a pipe close to a fitting without damaging the fitting.

Orbital action is available on some higher-end models. Similar to a jigsaw's orbital setting, it swings the blade in an elliptical motion instead of a straight back-and-forth path. The forward swing on the cutting stroke pushes the blade into the material more aggressively. This speeds up wood cutting significantly but increases vibration and makes metal cutting less effective. Use orbital mode for rough wood demolition where speed matters. Turn it off for metal cutting, plumbing work, and any situation that requires a degree of control. Not all reciprocating saws offer orbital action, and for many users it is not a deciding factor.

Corded vs Cordless

Corded reciprocating saws deliver 10 to 15 amps of sustained power through a wall outlet. For all-day demolition work like gutting a bathroom, tearing out a deck, or stripping a house to the studs, corded saws do not slow down, lose power, or need a battery swap. They are also less expensive than comparable cordless models. A quality corded reciprocating saw from Milwaukee, DeWalt, or Makita costs $80 to $150. If the work happens near an outlet and you have access to a heavy-duty extension cord, corded power is hard to beat for sustained demolition.

Cordless models on 18V/20V platforms with 5Ah or larger batteries handle most residential demolition tasks competently. Battery life varies by material, but expect 30 to 60 minutes of heavy cutting per charge in nail-embedded lumber. Having two batteries is practical, as one charges while you cut with the other. The 36V/40V platforms from Makita, DeWalt (FlexVolt), and Milwaukee (MX FUEL) push cordless performance even closer to corded levels for sustained heavy work.

The cordless advantage is enormous for overhead cuts, ladder work, roof work, and job sites where running extension cords is impractical or creates a tripping hazard. Cutting through old rafters while standing on a ladder with no cord to manage is a significant safety and convenience improvement. If you already own batteries in a cordless platform, the cordless reciprocating saw on that platform is the better choice for most homeowners and remodelers. The portability alone justifies the price premium over corded.

Blade Selection

The blade is what makes a reciprocating saw versatile. Swap the blade and you have a different tool for a different material. Keeping a variety of blades on hand means you are ready for wood, metal, mixed materials, and pruning without any other equipment.

Wood blades run 6 to 12 inches long with 5 to 8 TPI (teeth per inch). Longer blades handle thicker material. A 12-inch blade cuts through a 2x10 floor joist in a single pass. The aggressive tooth pattern cuts fast but rough, which is exactly what you want in demolition. For green wood and tree pruning, use dedicated pruning blades that have wider gullets (the spaces between teeth) to clear wet, sticky chips that would clog a standard wood blade.

Metal blades run 4 to 8 inches long with 14 to 24 TPI. Bi-metal construction, which bonds hardened high-speed steel teeth to a flexible carbon steel body, survives hitting nails and screws without snapping. For pipe cutting, match the blade length to the pipe diameter plus a few inches of clearance for the shoe. 18 TPI is a reliable general-purpose metal-cutting choice that works on copper, steel, cast iron, and threaded rod. For thin sheet metal, go higher to 24 TPI so at least 3 teeth are in contact with the material at all times.

Demolition blades run 8 to 12 inches long with 8 to 14 TPI. These are thick, heavy bi-metal blades designed specifically for nail-embedded lumber, mixed materials, and outright abuse. When you are tearing apart a structure and hitting nails, screws, lag bolts, and the occasional piece of steel flashing, demolition blades keep cutting where standard wood blades would break or dull instantly. They are the default blade for remodeling work.

Carbide-tipped blades cost more than standard bi-metal but last 10 to 20 times longer in abrasive materials. Cast iron pipe, stainless steel, cement board, and hardened fasteners all eat through standard bi-metal blades in minutes. A carbide-tipped blade handles the same material for hours. If you are cutting cast iron drain pipe (a common task in older homes), carbide-tipped blades are worth the $8 to $15 per blade premium because you will go through far fewer of them.

Technique and Safety

Let the shoe ride against the work surface. The shoe, which is the flat metal plate at the base of the saw, acts as a pivot point and provides control. Press the shoe firmly against the material you are cutting and let it stabilize the saw while the blade does the work. Without shoe contact, the saw bounces unpredictably, the blade chatters against the material, and the cut wanders. Proper shoe contact is the difference between a controlled cut and a fight with the tool.

Do not force the blade through the material. Let the teeth do the cutting at their own pace. Excessive pressure bends the blade, which produces curved cuts that angle away from your intended line and breaks blades prematurely. A sharp blade in the right TPI range for the material should cut smoothly with moderate feed pressure. If you find yourself pushing hard, the blade is either dull, the wrong TPI for the material, or both.

Check behind the cut surface before cutting into any wall, floor, or ceiling. Reciprocating saws will happily cut through electrical wires, plumbing pipes, and gas lines hidden behind drywall, plaster, or sheathing. Use a stud finder with wire-detection capability or an inspection camera to identify what is behind the surface before you start cutting. This is not optional. Cutting through a live electrical wire or a gas line has consequences that range from expensive to life-threatening.

Wear safety glasses and hearing protection for every cut. Reciprocating saws throw debris aggressively, especially during demolition when nails, wood splinters, and plaster fragments fly in unpredictable directions. The saw produces 90 or more decibels under load, well above the threshold for hearing damage with prolonged exposure. A full face shield is worthwhile during overhead demolition work where falling debris is likely to hit you in the face. Thick work gloves protect your hands from vibration during extended use and from sharp material edges.

Frequently Asked Questions

What Is a Reciprocating Saw Used For?

Demolition (removing walls, decks, old framing), plumbing (cutting pipe in tight spaces), tree pruning (branches up to 8 inches in diameter), and any rough cutting where speed matters more than precision. A reciprocating saw is not a finish-work tool. If you need a clean edge, use a circular saw, miter saw, or jigsaw. The reciprocating saw is for taking things apart, not putting them together.

Can I Cut Metal with a Reciprocating Saw?

Yes. Use a bi-metal or carbide-tipped blade with 14 to 24 TPI. Reduce speed to about half trigger for metal cutting. Let the blade do the work without forcing it through the material. Cutting cast iron, steel pipe, threaded rod, angle iron, and rebar is routine work for a reciprocating saw with the right blade. Apply cutting oil on thick steel to extend blade life and reduce heat buildup.

What Is the Difference Between a Reciprocating Saw and a Sawzall?

Sawzall is Milwaukee's brand name for their reciprocating saw product line. The name has become a generic term in the trades, the same way "Band-Aid" is used for any adhesive bandage. Every major manufacturer makes a reciprocating saw. Milwaukee calls theirs a Sawzall, DeWalt calls theirs a Reciprocating Saw, Makita uses the same generic name, and Bosch uses both "reciprocating saw" and their own branding. They are all the same type of tool.

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