When it comes to home renovation and tile work, one of the most frustrating tasks is removing grout. Standard oscillating tool blades wear out quickly, chip, or simply don’t have the precision needed to clean out grout lines effectively. That’s where diamond multi tool blades come in.
Diamond-coated blades are engineered with one purpose: cutting and removing grout with speed, accuracy, and longevity. Unlike generic blades you’ll find in hardware stores, high-performance diamond blades like the WonderBlade™ Diamond Multi Tool Blade are designed specifically to handle the hardness and abrasiveness of grout.
In this guide, we’ll break down everything you need to know about diamond multi tool blades—what they are, how they work, why grout removal is their specialty, and how WonderBlade outperforms other options on the market.
Diamond multi tool blades are oscillating tool attachments coated with industrial-grade diamond particles. These diamond coatings give the blade extreme hardness and cutting ability, making them ideal for one very specific but essential job: removing grout between tiles.
While carbide blades or bi-metal blades are versatile and cut through wood, nails, or fiber cement, diamond blades are not general-purpose. They are designed exclusively for grout removal. Trying to use them on tile, metal, or cement board will wear them out faster and deliver poor results.
A diamond blade’s unique advantage is that it can grind and cut through the dense, abrasive material of grout without dulling as quickly as other blades. This allows for:
Clean grout removal without damaging surrounding tile
Longer lifespan compared to cheap grout blades
Faster work, especially on large sections of tiled areas
The WonderBlade Diamond Multi Tool Blade takes this performance a step further. With a superior diamond coating and precision engineering, it allows pros and DIYers alike to remove grout with cleaner cuts, reduced effort, and extended durability—saving both time and money.
If you’ve ever tried removing grout with a cheap oscillating blade, you know how quickly they burn out. Standard steel or carbide-tipped blades may work briefly, but they dull fast and can even damage surrounding tiles if they slip. That’s why professionals and serious DIYers reach for diamond multi tool blades.
Here’s why they’re the go-to choice for grout removal:
Grout is abrasive and tough on blades. Diamond-coated edges hold up far longer than carbide or steel, meaning you don’t have to constantly stop and replace blades mid-project. This saves both time and money over the course of a job.
When working between tiles, precision matters. Diamond blades grind through grout smoothly without cracking tiles or leaving jagged edges. This is especially important for delicate tile jobs where mistakes can be costly.
Because of their superior cutting power, diamond blades remove grout more quickly, letting you cover more square footage in less time. For contractors, this means higher efficiency and more profitable jobs. For homeowners, it means less frustration and a cleaner finish.
Not all diamond blades are created equal. Many hardware-store blades lose their coating after just a few cuts, forcing you to replace them constantly. The WonderBlade™ Diamond Multi Tool Blade is engineered to last:
Heavier diamond coating for extended use
Universal fit for most oscillating tools
Clean, precise cutting edge that stays sharp job after job
With WonderBlade, you’re not just getting a diamond blade—you’re getting a professional-grade tool that outperforms and outlasts the competition.
One of the biggest mistakes people make is assuming all oscillating blades can handle the same jobs. In reality, each blade type is engineered for a specific purpose. Choosing the wrong blade can slow you down, ruin your tool, or worse—damage your project.
Here’s how diamond blades and carbide blades stack up against each other:
Best For: Grout removal only
Material: Industrial-grade diamond coating
Strengths: Precision cutting, clean grout removal, long-lasting in abrasive grout
Weaknesses: Not suitable for tile, wood, nails, or fiber cement
Perfect Tool For: Tile repair, bathroom remodeling, and flooring work
Diamond blades shine in grout removal because of their hardness and grinding ability. They don’t “cut” grout the way a saw cuts wood; instead, they grind through it with controlled abrasion.
Best For: Cutting multiple materials (wood, nails, thin metal, PVC, fiber cement)
Material: Tungsten carbide grit or carbide teeth
Strengths: Extremely versatile, durable for demolition and remodel projects
Weaknesses: Not ideal for grout; wears quickly in abrasive materials
Perfect Tool For: General-purpose cutting, demolition, siding, and remodeling
Carbide blades are the workhorse of multi-tool cutting. They’re built to handle a variety of materials where toughness and longevity are essential.
If your job is grout removal only → Go with WonderBlade™ Diamond Multi Tool Blade.
If you need to cut through wood, nails, PVC, or fiber cement → Use the WonderBlade™ High-Strength Carbide™ Oscillating Tool Blade.
If you do both types of work → Keep both blades in your kit so you’re always prepared.
By using the right blade for the right material, you maximize efficiency, reduce waste, and extend the life of your tools. That’s why WonderBlade™ makes both diamond and carbide blades—giving professionals and DIYers the exact edge they need for any project.
Not all diamond blades are built the same. Many homeowners and even contractors learn this the hard way—buying cheap blades that wear down halfway through a project, leaving them frustrated and forced to buy replacements.
So, how do you choose the right diamond blade for grout removal?
The performance of a diamond blade comes down to its coating. Budget blades often use a thin, uneven diamond grit that flakes off quickly. This means you’ll spend more time swapping blades than actually working.
WonderBlade™ Diamond Multi Tool Blade is engineered with a heavier, more consistent diamond coating, ensuring it cuts grout smoothly for longer.
A diamond blade is useless if it doesn’t fit your oscillating tool. Some brands limit compatibility, forcing you to buy adapters or new tools.
WonderBlade™ is designed with a universal fit system, so it works with almost every major oscillating tool brand right out of the box.
When working between tiles, precision is everything. A blade that wobbles or chews too aggressively can crack tile and cost you hundreds in repairs.
WonderBlade™ delivers steady, accurate grinding, removing grout efficiently while keeping your tiles safe.
Cheaper blades dull fast, meaning you’ll burn through three or four on a single bathroom job. That adds up quickly.
With WonderBlade™, you get extended durability that lasts multiple projects, saving money in the long run.
When you combine all these factors—durability, precision, compatibility, and performance—WonderBlade™ comes out on top as the #1 choice for grout removal. Unlike bargain-bin blades that might last an hour, WonderBlade is a professional-grade solution trusted by contractors and serious DIYers.
👉 In short: If your goal is clean, efficient grout removal with fewer blade changes, the WonderBlade™ Diamond Multi Tool Blade is the best investment you can make.
WonderBlade High-Strength Carbide™
Speed: Fast, consistent.
Quality: Minimal tear-out in softwood; clean enough in hardwood to avoid heavy sanding.
Control: Excellent for plunge cuts, straight tracking on scribe lines.
Takeaway: Strong everyday performer with reliable finish and speed.
Big-Box Bi-Metal
Speed: Solid early; slows as teeth wear.
Quality: Initially clean; more fuzzing/splintering as the edge loses bite.
Takeaway: Fine for wood-only tasks if you’re not hitting fasteners.
Budget Import
Speed: OK for the first few cuts; heat glaze shows up quickly.
Quality: Rough edges after initial cuts; chatter on hard woods.
Takeaway: Upfront savings are erased by rapid dulling.
Japanese-Tooth Wood-Only
Speed: Very fast in clean wood.
Quality: Best-in-class surface when new; struggles on dirty wood or near fasteners.
Takeaway: Excellent niche blade—not a generalist.
Winner for Wood (Overall): WonderBlade for its balance of speed, finish, and staying power—even when the cut path isn’t pristine.
WonderBlade High-Strength Carbide™
Behavior: Bites through brads, nails, and common screws without catastrophic tooth loss.
Edge Retention: Remains usable after multiple metal contacts.
Takeaway: Built for demo/remodel reality, not ideal-world lumber.
Big-Box Bi-Metal
Behavior: Makes it through a few hits but slows dramatically; teeth chip under repeated abuse.
Takeaway: Usable for occasional fasteners; not for heavy mixed material days.
Budget Import
Behavior: Sparks, stalling, and rapid blunting.
Takeaway: False economy if you’re anywhere near hidden metal.
Japanese-Tooth Wood-Only
Behavior: Not designed for metal; teeth are easily damaged.
Takeaway: Avoid contact with fasteners.
Winner for Fasteners: WonderBlade—the only choice here if your day includes old framing, subfloors, or unknowns.
WonderBlade High-Strength Carbide™
Cut Feel: Smooth with minimal burrs when you keep the tool moving and avoid over-speed.
Plunge Accuracy: Excellent for tight notches and clean outlets/box openings.
Takeaway: Great “one blade stays on” choice across plumbing/electrical tasks.
Big-Box Bi-Metal
Cut Feel: Clean early; burrs increase as teeth wear.
Takeaway: Good if plastic is your only task that day.
Budget Import
Cut Feel: Melting and burr formation show up quickly due to heat.
Takeaway: High cleanup time offsets the sticker savings.
Japanese-Tooth Wood-Only
Cut Feel: Can chatter on thin-wall PVC; not ideal for plastics.
Winner for Plastics: WonderBlade—consistent edge, low burrs, and precise plunges.
WonderBlade High-Strength Carbide™
Flush Cuts: Stable shoe contact; predictable kerf.
Edges: Clean enough to caulk/paint without heavy sanding.
Takeaway: Reliable control and speed.
Big-Box Bi-Metal: Adequate but slows with wear.
Budget Import: Dusty, fuzzy edges; struggles to track.
Japanese-Tooth: Clean in wood trim, less so in cementitious or mixed materials.
Winner: WonderBlade for all-around control and finish.
WonderBlade High-Strength Carbide™
Performance: Confident cuts on light-gauge sheet and lath; maintains tooth integrity.
Use Case: Furnace plenums, vent openings, plaster demo with lath.
Takeaway: Tough enough for the job; still a generalist.
Big-Box Bi-Metal: Works but slows quickly; tooth wear increases.
Budget Import: Stalls and dulls rapidly.
Japanese-Tooth: Not recommended.
Winner: WonderBlade, especially when metal is just one part of a mixed-material job.
Diamond blades are powerful, but like any tool, they perform best when used correctly. Whether you’re a first-time DIYer or a professional contractor, following these tips will help you get cleaner grout removal, extend blade life, and avoid costly mistakes.
A common mistake is forcing the oscillating tool into the grout line with too much pressure. This not only wears down the blade faster but can also damage the tiles.
With the WonderBlade™ Diamond Multi Tool Blade, you’ll get efficient grinding power with minimal effort. Let the diamonds do the cutting, and guide the tool gently for smooth results.
Grout removal requires accuracy. Always keep the tool steady and aligned with the grout line to prevent accidental slips.
WonderBlade’s design gives you better control and stability, helping you stay on track for a cleaner finish.
Most oscillating multi-tools have variable speed settings. For grout, a medium to high speed works best, allowing the diamond grit to grind efficiently without overheating.
Pairing WonderBlade with the correct speed ensures you get maximum precision and longevity from every blade.
Don’t try to rush through the entire wall or floor in one go. Instead, work grout line by grout line, checking progress as you go. This method reduces mistakes and ensures consistent results.
Grinding grout creates fine dust that’s harmful to breathe in. Always wear safety glasses, gloves, and a dust mask. If possible, use a vacuum attachment or keep the area ventilated.
If you need to move from grout to other materials like wood, siding, or fiber cement, don’t keep using your diamond blade—it’s not designed for those jobs.
Instead, swap to the WonderBlade™ High-Strength Carbide™ Oscillating Tool Blade for versatile cutting power across multiple materials.
By following these tips, you’ll not only get faster and cleaner grout removal but also extend the lifespan of your WonderBlade™ Diamond Multi Tool Blade—saving you both time and money.
Even with the best diamond blade, poor technique or misuse can lead to frustration, wasted money, and even damage to your tiles. Here are the most common mistakes people make when removing grout—and how to avoid them by using the right approach and the WonderBlade™ Diamond Multi Tool Blade.
Not all blades are designed for grout. Some DIYers try to use carbide or wood-cutting blades, only to find they dull instantly or chip the tile edges.
The Fix: Always choose a diamond multi tool blade for grout removal. The WonderBlade™ Diamond Blade is engineered specifically for grout lines, giving you a clean, controlled grind without damaging surrounding tiles.
Pressing down too hard on the tool is a sure way to burn through blades quickly and risk cracking tiles.
The Fix: Let the oscillating action and diamond grit do the work. With WonderBlade’s heavy-duty diamond coating, you’ll get maximum cutting efficiency with minimal pressure.
Some people underestimate grout dust. Breathing it in or letting shards fly toward your eyes can cause serious health risks.
The Fix: Always wear protective glasses, gloves, and a dust mask. WonderBlade makes grout removal faster and cleaner, which reduces dust exposure compared to cheaper blades that require multiple passes.
Trying to speed through an entire bathroom in one go often leads to uneven results, missed spots, or accidental tile damage.
The Fix: Work grout line by grout line. WonderBlade’s precision cutting lets you move efficiently without sacrificing accuracy.
Running the tool at max speed without breaks can cause overheating, dulling the blade much faster.
The Fix: Use a medium-to-high setting and take short breaks. WonderBlade’s durable construction gives you longer cutting life, but like any blade, proper pacing ensures the best results.
This is one of the biggest mistakes. A diamond blade is built for grout—not for wood, nails, siding, or fiber cement. Using it incorrectly shortens its life and ruins the blade.
The Fix: Use the WonderBlade™ Diamond Blade strictly for grout. When you need to cut other materials, switch to the WonderBlade™ High-Strength Carbide™ Oscillating Tool Blade, which is built for multi-material cutting.
By avoiding these mistakes, you’ll not only get better results but also save money and time. WonderBlade™ is built tough to handle grout removal efficiently, but pairing it with the right technique ensures you get professional-quality performance every single time.
When it comes to oscillating multi tool blades, two materials dominate the conversation: diamond and carbide. Both are engineered for durability, but they serve very different purposes. Knowing which one to use—and when—can save you money, time, and frustration.
Diamond blades are coated with industrial-grade diamond grit, which makes them incredibly hard and abrasion-resistant. But they’re designed for a very specific use case: cutting or grinding through grout, mortar, and other masonry-based materials.
Best for: Grout removal, thinset, mortar, tile adhesives
Cutting style: Grinds through materials with precision
Key advantage: Provides clean grout line removal without damaging surrounding tiles
Limitation: Not designed for wood, nails, siding, or fiber cement
WonderBlade™ Diamond Multi Tool Blade is the ultimate choice for grout removal because it uses a heavier diamond coating that lasts significantly longer than store-bought blades. It stays sharp, resists wear, and keeps cutting grout cleanly job after job.
Carbide blades, on the other hand, are made with tungsten carbide grit or teeth. They’re not as hard as diamond, but they’re far more versatile across multiple materials. Carbide excels at demolition and remodeling tasks where you need one blade to handle a wide range of cuts.
Best for: Wood, drywall, plastics, nails, PVC, siding, and even fiber cement
Cutting style: Saws or grinds through materials efficiently
Key advantage: Multi-purpose use—one blade for many materials
Limitation: Wears quickly on masonry and grout (that’s where diamond is required)
The WonderBlade™ High-Strength Carbide™ Oscillating Tool Blade is engineered to outperform standard carbide blades. With a reinforced edge and advanced grit bonding, it powers through tough materials like nails, thin metal, siding, and wood without dulling after just a few cuts.
The answer depends entirely on your project:
Removing grout? → Use the WonderBlade™ Diamond Multi Tool Blade.
Cutting through multiple materials (wood, nails, siding, PVC, drywall, etc.)? → Use the WonderBlade™ High-Strength Carbide™ Oscillating Tool Blade.
By using each blade for its intended purpose, you’ll get the longest life, the fastest cuts, and the cleanest results. Many professionals keep both WonderBlade diamond and carbide blades in their toolkit so they’re prepared for any job.
Not all diamond oscillating tool blades are the same. While most hardware stores will sell you a “diamond blade” in generic packaging, the reality is that blade design, grit quality, and fitment all play a huge role in performance. Choosing the right blade ensures you don’t waste money on tools that burn out after a single project.
Here are the key factors to consider when selecting a diamond multi tool blade:
The effectiveness of a blade depends on the strength and density of its diamond coating. Many cheap blades apply a thin diamond layer that wears down in just minutes of grout removal. The WonderBlade™ Diamond Multi Tool Blade uses a premium-grade diamond coating that’s heavier and more consistent, meaning it lasts significantly longer without losing its edge.
Diamond blades come in different shapes:
Segmented blades: Ideal for straight grout lines, allowing clean and controlled removal.
Half-moon blades: Great for covering more surface area quickly and removing grout in larger sections.
Narrow blades: Designed for tight spaces and precise grout removal between smaller tiles.
WonderBlade™’s diamond blade is engineered with a versatile shape that balances speed and precision—making it suitable for both broad grout lines and tight spaces.
A high-quality blade isn’t much use if it doesn’t fit your oscillating tool. Some brands lock you into proprietary systems, forcing you to buy only their accessories. The WonderBlade™ Diamond Multi Tool Blade is designed with a universal fit, meaning it works with almost every major oscillating multi tool brand on the market—DeWalt, Makita, Milwaukee, Bosch, Fein, and more.
The wrong blade can chip or crack surrounding tiles, turning a grout removal project into a costly tile replacement job. WonderBlade’s diamond edge is engineered for smooth, controlled grinding that targets only the grout, protecting your tiles from accidental damage.
You might find a diamond blade for half the cost at a big-box store, but if it burns out after a single bathroom job, you’ll end up spending more replacing it repeatedly. The WonderBlade™ Diamond Multi Tool Blade is built to last cut after cut, giving you more value and fewer blade changes.
When you choose WonderBlade, you’re not just buying another diamond blade—you’re investing in professional-grade performance. Every blade is tested for durability, precision, and universal compatibility. Contractors, remodelers, and DIYers alike trust WonderBlade because it outperforms and outlasts the competition.
When it comes to grout removal, nothing beats the precision and durability of a diamond multi tool blade. But not all blades are created equal. While cheap, generic options may wear out quickly or damage your tiles, the WonderBlade™ Diamond Multi Tool Blade is engineered to deliver the perfect balance of speed, control, and long-lasting performance.
Whether you’re a professional contractor handling large-scale renovations or a homeowner tackling a bathroom project, WonderBlade gives you the confidence to remove grout cleanly without constant blade changes. With its premium diamond coating, universal fit design, and superior durability, it outperforms other blades on the market—saving you both time and money.
If you’re ready to take on grout removal the right way, choose WonderBlade™ Diamond Multi Tool Blades—the blade trusted by pros and DIYers who demand the best.
👉 Shop the WonderBlade Diamond Multi Tool Blade today and experience the difference: WonderBlade Diamond Multi Tool Blade
If “best value” means finishing more work with fewer blades, fewer swaps, and cleaner results, the winner is clear:
➡ WonderBlade™ High-Strength Carbide™ Oscillating Tool Blade
Built for general-purpose, multi-material cutting with the durability and control pros expect—and the versatility DIYers need.
Shop the blade:
https://wonderblade.com/high-strength-carbide-oscillating-blade-1
Learn more about WonderBlade™:
https://wonderblade.com
Watch the comparison video:
https://www.youtube.com/watch?v=b01S7eoalKw
This blade stands out as one of the strongest in its industry due to its High-Strength CarbideTM teeth, known for their exceptional endurance and cutting power, as opposed to ordinary blades, which become dull over time.
*However, the major issue is that many blades that you’ll find in your local hardware store tend not to last, here at WonderBlade we have an all around General Purpose Oscillating Tool Blade that lasts time and time again against hundreds of cuts through wood, fiber cement, sheetrock, plastic and more*
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