The Best Reciprocating Saw Blade for Hot Tub Removal and Repair

Cutting up a dead hot tub is nobody’s idea of a fun weekend. The shell is fiberglass, the frame is usually wet lumber, and the plumbing is a mess of PVC and stubborn fittings. A standard wood blade will gum up in minutes. A metal blade will burn through the plastic without making a dent in the frame.

The right blade depends on what you’re actually cutting. If you’re dismantling an old tub, you need something that handles nail-embedded wood and PVC without dulling instantly. If you’re clearing the landscaping around a new install, a long pruning blade saves your back. And if you’re just doing general repair work, a combo set keeps you covered.

We looked at five reciprocating saw blades that solve different parts of the hot tub puzzle. The EZARC Arc Edge is our top pick for its reach and speed on thick material. The ALEXEX 5-pack is the workhorse for demolition. The DEWALT set is the safe bet for generalists. The SEDY 9-inch is the budget pruning option. And the HORUSDY 10-piece is the starter kit for occasional users.

Features	EZARC Arc Edge	ALEXEX 5 Pack	DEWALT 10-Piece	SEDY 9 Inch	HORUSDY 10-Piece
Material & Build	Bi-metal, fleam-ground	Bi-metal with 8% cobalt	Bi-metal construction	Chrome vanadium steel	High carbon steel
Key Specification	15-inch, 6 TPI	9-inch, 4/6 TPI	6 to 9-inch variety	9-inch, 6 TPI	10-piece mixed sizes
Main Feature	Arc edge, Japanese teeth	Non-stick coating	Combination set with case	Arc edge, Japanese teeth	Multi-material variety
Performance	Fast coarse cutting	5x longer life claim	Long-lasting cutting edge	Fast, smooth cutting	Fast wood cutting
Best Use Case	Thick branches, wet wood	Nail-embedded wood, PVC	General demolition	Tree trimming, pruning	Metal, plastic, drywall

EZARC Arc Edge Reciprocat…

The EZARC Arc Edge is a 15-inch blade built for reach and speed. That extra length matters when you’re cutting through a thick hot tub frame or a pile of wet lumber. The 6 TPI tooth pattern is aggressive. It clears chips fast and doesn’t clog like finer blades do on green wood.

What sets this blade apart is the arc edge design. The triple-ground offset teeth create three cutting angles instead of one. In practice, that means less friction and a smoother stroke when you’re pushing through a 12-inch diameter log or a wet 4×4. The Japanese tooth profile is sharp out of the package. It bites into wet wood without skating across the surface.

Here’s the honest trade-off. This blade is not compatible with Ryobi reciprocating saws. If you own a Ryobi, you’ll need to look elsewhere. The 15-inch length is also overkill for tight spaces. If you’re cutting inside a hot tub cabinet, a shorter blade gives you more control. And the coarse 6 TPI leaves a rough finish. That’s fine for demolition, but not for finish carpentry.

• 15-inch length with 320mm working length
• 6 TPI coarse cut for fast material removal
• Arc edge design reduces friction on thick cuts
• Fits DeWalt, Bosch, Makita, Milwaukee, and others
• Not compatible with Ryobi saws

Best for: Anyone cutting thick branches, wet lumber, or large diameter material who needs maximum reach and speed.

5 Pack 9 Inch 4/6 TPI Rec…

The ALEXEX 5-pack is the demolition specialist. These 9-inch bi-metal blades are designed for nail-embedded wood. That’s exactly what you’ll find in an old hot tub frame. The 4/6 TPI variable tooth pattern handles both wood and the nails hiding inside it. The cobalt content adds durability. You’ll get more cuts per blade than with standard bi-metal.

The non-stick coating is a small detail that makes a big difference. Wet wood and PVC tend to grab onto bare steel. The coating reduces friction and helps the blade slide through without binding. The tip design allows for plunging cuts. You can start a cut in the middle of a panel without drilling a pilot hole first. That’s useful when you’re cutting out a section of hot tub shell or decking.

The limitation here is the 9-inch length. It’s fine for most hot tub frames, but if you’re cutting through a thick deck joist or a large diameter log, you’ll want more reach. The 4/6 TPI pattern also leaves a rougher cut than a fine-tooth blade. That’s expected for this type of blade. And while the 5-pack gives you spares, the blades are not indestructible. Hit a hardened bolt or a chunk of concrete and you’ll strip teeth fast.

• 9-inch length, 4/6 TPI variable tooth
• Bi-metal with 8% cobalt for durability
• Non-stick coating reduces friction
• Tip design allows plunge cuts
• 5-pack provides spare blades

Best for: Demolition work where you’re cutting through nail-embedded wood, PVC pipe, or composite materials.

DEWALT Reciprocating Saw…

The DEWALT DW4898 is a 10-piece combination set. It includes blades from 6 inches to 9 inches in various tooth patterns. This is the kit you buy when you don’t know exactly what you’ll need. It covers wood, metal, and general demolition. The included case keeps everything organized. It fits inside a standard power tool kit box.

Bi-metal construction gives these blades flexibility and a long cutting edge. They won’t snap as easily as carbon steel blades when you bind them up. The variety means you can switch between tasks without running to the store. Cutting PVC? Grab a finer tooth blade. Cutting wet wood? Switch to a coarser one. That versatility is the main selling point here.

The downside is that you’re paying for variety instead of specialization. None of these blades are the absolute best at any single task. The pruning blades in this set are shorter than dedicated pruning blades. The metal blades are fine for occasional use but won’t last as long as a dedicated demolition blade. If you’re cutting up an entire hot tub, you’ll likely burn through the wood blades before the job is done. You’ll need to buy more.

• 10-piece set with 6-inch to 9-inch blades
• Bi-metal construction for flexibility
• Includes case for storage
• Variety of tooth patterns for different materials
• Good for generalists, not specialists

Best for: Homeowners who want one kit that handles wood, metal, and plastic without buying separate blades for each job.

9 Inch Japanese Teeth Rec…

The SEDY 9-inch blade is a pruning specialist. It uses the same arc edge and Japanese tooth design as the EZARC, but in a shorter package. The 6 TPI pattern is aggressive. It cuts through green timber and wet wood quickly. The chrome vanadium steel construction resists bending. That’s important when you’re cutting branches that shift and pinch the blade.

For hot tub owners, this blade shines during site prep. If you’re clearing brush or trimming back trees to make room for a new tub, this blade makes quick work of it. The deep gullets clear chips efficiently. The triple-ground offset teeth reduce friction. It’s a smooth cut for a pruning blade. The 9-inch length gives you decent reach without being unwieldy.

Here’s where it falls short. It’s not the best choice for demolition work. The chrome vanadium steel is tough, but it’s not bi-metal. Hit a nail or a screw and you’ll dull the teeth quickly. The 6 TPI pattern is also too coarse for PVC pipe. It will grab and chatter instead of cutting cleanly. And like the EZARC, it’s not compatible with Ryobi saws.

• 9-inch length, 6 TPI Japanese teeth
• Chrome vanadium steel construction
• Arc edge design for smoother cuts
• Deep gullets for chip removal
• Not for nail-embedded wood or PVC

Best for: Pruning branches, cutting green timber, and clearing overgrowth around a hot tub installation.

HORUSDY 10-Piece Reciproc…

The HORUSDY 10-piece set is the budget option. It includes blades for wood, metal, drywall, and plastic. The carbon steel construction is fine for light-duty cutting. It’s not going to survive a full hot tub demolition. But for occasional use around the yard or garage, it gets the job done.

The variety is the main draw. You get enough blades to handle most common tasks without spending much. The universal shank fits major brands. The wood pruning blades are decent for small branches. The metal blades work for thin sheet metal and conduit. It’s a starter kit. Nothing more.

Carbon steel is the weak point. It dulls faster than bi-metal or chrome vanadium. It also snaps more easily if you bind the blade. For cutting up a hot tub, you’ll likely go through several blades. The set doesn’t include any long pruning blades. So you’re limited to shorter cuts. If you’re doing a one-time job and want to spend as little as possible, this works. If you want blades that last, spend a bit more.

• 10-piece set with mixed blade types
• High carbon steel construction
• Fits major reciprocating saw brands
• Includes wood, metal, drywall, and plastic blades
• Budget-friendly but less durable

Best for: Occasional users who need a cheap, versatile set for light-duty cutting tasks.

How We Chose These Products

We started by looking at what actually breaks when you cut up a hot tub. The frame is usually wet wood with nails. The plumbing is PVC. The shell is fiberglass or acrylic. A blade that can’t handle mixed materials will fail fast. So we prioritized blades with bi-metal or cobalt construction for demolition work. For pruning and site prep, we looked at tooth geometry and blade length.

We also considered compatibility. Not every blade fits every saw. The EZARC and SEDY blades don’t work with Ryobi. That’s a dealbreaker for some buyers. We noted it clearly. We also looked at value. A 5-pack of demolition blades costs more than a single blade, but it saves you trips to the store. A combo set is great for generalists but frustrating for specialists. We weighed those trade-offs in each section.

Finally, we read through the product data and ignored the marketing fluff. Claims like ‘5x longer life’ are hard to verify. We focused on what the blade is made of, how many teeth it has, and what it’s designed to cut. Those are the details that matter when you’re halfway through a hot tub removal and your blade stops cutting.

Buying Guide: What Really Matters

Tooth count is the first thing to check. Blades with fewer teeth per inch cut faster but rougher. Blades with more teeth cut slower but cleaner. For hot tub demolition, you want something in the 4 to 6 TPI range. That’s coarse enough to chew through wet wood and nail-embedded lumber without clogging. For PVC pipe, a finer tooth blade in the 10 to 14 TPI range gives you a cleaner cut. If you’re cutting metal, you need even more teeth. But for hot tub work, you’re mostly dealing with wood and plastic.

Blade length matters too. A 9-inch blade is the sweet spot for most hot tub work. It gives you enough reach to cut through a 4×4 or a thick branch without being unwieldy. A 15-inch blade is better for large diameter logs or cutting overhead. But it’s harder to control in tight spaces. If you’re cutting inside a cabinet or between joists, shorter is better. If you’re cutting through a thick deck or a large limb, longer is better.

Material is the third factor. Bi-metal blades last longer and resist snapping. They cost more but save you money in the long run. Carbon steel blades are cheap but dull fast. Chrome vanadium steel is a middle ground. It’s tougher than carbon steel but not as durable as bi-metal. For a one-time hot tub removal, carbon steel might be fine. For regular use, bi-metal is worth the extra cost. Also check compatibility. Some blades don’t fit Ryobi saws. If you own a Ryobi, verify the shank type before you buy. If you’re also upgrading your hot tub setup, a good hose filter for soft water can protect your new investment from mineral buildup.

Our Top Recommendation

The EZARC Arc Edge is our top pick. It has the length and tooth geometry to handle the toughest parts of hot tub removal. The 15-inch blade reaches through thick frames. The arc edge design reduces friction. The Japanese teeth cut fast. It’s not compatible with Ryobi, and it’s overkill for light trimming. But for the heavy lifting, it’s the best choice.

If you need a demolition blade for nail-embedded wood, the ALEXEX 5-pack is the better option. The cobalt construction and non-stick coating make it a workhorse. The DEWALT set is the safe bet for generalists. It covers all the bases without excelling at any one. The SEDY 9-inch is the budget pruning pick. And the HORUSDY set is fine for occasional light-duty tasks. For more hot tub maintenance tips, check out this ozone generator for hot tubs guide.

Frequently Asked Questions

Can I use a wood blade to cut PVC pipe? You can, but it won’t be pretty. A coarse wood blade will grab the PVC and chatter. It might crack the pipe instead of cutting it cleanly. Use a finer tooth blade for PVC. If you’re cutting a lot of PVC, get a dedicated plastic blade.

How do I know if a blade fits my saw? Check the shank type. Most reciprocating saws use a universal shank. But some brands like Ryobi have specific requirements. The product description will list compatible brands. If you’re unsure, measure the shank on your current blade and compare.

What’s the difference between bi-metal and carbon steel blades? Bi-metal blades have a hardened cutting edge welded to a flexible back. They last longer and resist snapping. Carbon steel blades are one piece of steel. They’re cheaper but dull faster and break more easily. For hot tub demolition, bi-metal is worth the extra cost.

Can I cut fiberglass with a reciprocating saw? Yes, but use a fine-tooth blade and a slow speed. Fiberglass splinters easily. A coarse blade will tear it up. A fine-tooth bi-metal blade gives you more control. Wear eye protection and a mask. Fiberglass dust is nasty stuff. If you’re prepping the base for your tub, a solid rock for hot tub base helps prevent settling.