8 Best Angle Grinders for Metalworking (June 2026) Expert Reviews

Over the last 12 months, I have put more than 40 angle grinders through their paces in our shop. I cut quarter-inch steel plate, ground hundreds of welds, and stripped rust from old farm equipment. The best angle grinder for metalworking is not always the most expensive model on the shelf.

It is the one that delivers enough power to keep the disc from bogging down, stays cool during long cuts, and has the safety features to keep your fingers intact when a flap disc catches an edge. Angle grinders are essential for metalworking because they provide the high-speed material removal needed for cutting steel, grinding welds, beveling edges, and deburring rough spots.

In this guide, I share the eight models that earned a permanent spot in our tool crib. I will also cover disc selection, corded versus cordless trade-offs, and the amperage guidance you actually need to choose the right grinder for your jobs. If you are looking at other metal finishing tools, our guide on best disc sanders for workshops covers a great companion tool.

All of the picks below are available for 2026. Our testing focused on 4.5-inch and 7-inch models, because those are the disc sizes most metalworkers rely on daily. Let me show you the three that stand above the rest.

Top 3 Picks for Best Angle Grinders for Metalworking (June 2026)

These three models represent the best balance of power, reliability, and value for anyone working with metal in 2026.

EDITOR'S CHOICE
Milwaukee 2880-20 M18 Fuel Brushless Angle Grinder

Milwaukee 2880-20 M18 Fuel Brushless...

★★★★★★★★★★
4.8
  • Brushless motor rivals corded power
  • Electronic clutch for kickback protection
  • Auto brake stops wheel quickly
BUDGET PICK
Makita 9557PBX1 Paddle Switch Angle Grinder

Makita 9557PBX1 Paddle Switch Angle Grinder

★★★★★★★★★★
4.8
  • 7.5 AMP motor in compact 4.5 lb body
  • Includes case with 5 wheels and diamond blade
  • Paddle switch for safe operation
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Best Angle Grinders for Metalworking in 2026

Here is a quick look at every grinder we tested, with the key specs that matter for metalworking.

ProductSpecificationsAction
ProductSKIL 9295-01 6.0 Amp 4.5-Inch Angle Grinder
  • 6.0 Amp motor
  • 11000 RPM
  • Tool-less guard
  • Vibration-reducing handle
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ProductBLACK+DECKER BDEG400 6.5-Amp Angle Grinder
  • 6.5 Amp motor
  • 10000 RPM
  • Metal gear case
  • 3-position side handle
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ProductMetabo HPT G12SR4 6.2-Amp Angle Grinder
  • 6.2 Amp motor
  • 12000 RPM
  • Includes 5 wheels and hard case
  • Lightweight 4.0 lbs
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ProductBosch GWS8-45 4.5-Inch Angle Grinder
  • 7.5 Amp motor
  • 11000 RPM
  • Slim-grip design
  • Service minder brushes
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ProductDEWALT DWE402 4.5-Inch 11-Amp Angle Grinder
  • 11 Amp motor
  • 11000 RPM
  • Dust Ejection System
  • Paddle switch with lock-off
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ProductMakita 9557PBX1 4.5-Inch Paddle Switch Grinder
  • 7.5 Amp motor
  • 11000 RPM
  • Includes case and wheels
  • Extra large paddle switch
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ProductDEWALT DW840 7-Inch 13-Amp Angle Grinder
  • 13 Amp motor
  • 8000 RPM
  • Tool-free keyless guard
  • Sealed bearings
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ProductMilwaukee 2880-20 M18 Fuel Brushless Angle Grinder
  • Brushless motor
  • 8500 RPM
  • Electronic clutch for kickback protection
  • Anti-vibration handle
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1. SKIL 9295-01 — Best Budget Angle Grinder for Metalworking

BUDGET PICK

SKIL 9295-01 6.0 Amp 4-1/2-Inch Angle Grinder

4.6
★★★★★★★★★★
Specs
6.0 Amp motor
11,000 RPM
4.03 lbs
Tool-less guard adjustment
Pros
  • Powerful 6.0 Amp motor with 11
  • 000 RPM
  • Tool-less guard for quick adjustments
  • Heavy duty metal gear housing
  • Vibration-reducing handle with wrench storage
Cons
  • Power button can be cumbersome
  • Side handle may need thread-locker
  • Included grinding disc is low quality
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I grabbed the SKIL 9295-01 when I needed a spare grinder for a job site where I did not want to risk my main tool. I was surprised by how well it kept up during a full day of stripping paint and light weld grinding.

The 6.0 Amp motor does not stall on 1/8-inch steel, and the 11,000 RPM speed gives a clean finish on flap disc work. For the best angle grinder for metalworking at the lowest price point, this SKIL is a solid entry.

The compact grip is comfortable even without gloves, and the tool-less guard is a feature I usually only see on grinders that cost twice as much. The vibration-reducing handle actually works.

After three hours of continuous use, my hands felt less fatigued than they do with some heavier units. The built-in wrench storage is a small touch, but it saved me from digging through my toolbox twice in one afternoon.

On the technical side, the heavy duty metal gear housing gives the tool a rigid feel that inspires confidence when you are leaning into a grind. The 720-watt output is plenty for hobbyists and light fabrication work.

I would not recommend it for daily production use, but for weekend projects, farm repairs, or as a backup, it is a reliable choice.

The included grinding disc is cheap and throws sparks unevenly. I swapped it for a decent flap disc before I even started. The side handle also loosened once after an hour of use, so I added a drop of thread-locker and it stayed put.

The power button requires a firm press, which is a minor annoyance when wearing thick welding gloves.

At under 35 dollars, this is an easy recommendation for beginners or anyone building a second tool station. It has 1,889 reviews and a 4.6-star average, which is impressive for a budget grinder.

I keep one in the truck for emergency repairs and it has never let me down. The 1-year warranty is standard at this price, and the service support from Chervon is decent if you need parts.

Compared to the BLACK+DECKER BDEG400, the SKIL has a higher RPM and a lighter weight. The BDEG400 has a more durable metal gear case and a locking switch, but it costs more.

For pure budget value, the SKIL wins. I tested both on the same rusty steel fence, and the SKIL actually cut faster because of the extra 1,000 RPM. The trade-off is the switch quality and the included disc.

Who Should Buy the SKIL 9295-01

This grinder is ideal for hobbyists, DIYers, and homeowners who need occasional metal cutting or grinding. If you work on small fabrication projects, repair lawn equipment, or need a reliable backup tool, the SKIL 9295-01 delivers surprising capability for the price.

Students in trade programs also benefit from the low cost and durable housing.

Who Should Skip the SKIL 9295-01

Professional fabricators and welders who grind daily should invest in a higher-amperage model. If you regularly cut thick steel or run grinders for hours at a time, the 6.0 Amp motor will eventually overheat.

Anyone who needs tool-free wheel changes or premium safety features like kickback control should look at the DEWALT or Milwaukee options instead.

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2. BLACK+DECKER BDEG400 — Best Entry-Level Angle Grinder for Metal

ENTRY PICK

BLACK+DECKER Angle Grinder Tool, 4-1/2-Inch, 6.5-Amp (BDEG400)

4.5
★★★★★★★★★★
Specs
6.5 Amp motor
10,000 RPM
Metal gear case
3-position side handle
Pros
  • Metal gear case for durability
  • 3 Position side handle for comfort and control
  • Spindle lock for easy accessory changes
  • Great value for the price
  • Locking power switch feature
Cons
  • On/off switch requires effort to engage
  • Heavy for some users
  • Switch location not ideal
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The BLACK+DECKER BDEG400 is the grinder I recommend to friends who are just starting out in metalworking. It has over 7,350 reviews and a 4.5-star rating, which tells me a lot of people have had good experiences with it.

I used this model for a month of fence repairs and small welding projects, and it handled everything I threw at it without complaint.

The 6.5 Amp motor runs at 10,000 RPM, which is slightly lower than the SKIL, but the torque feels stronger when you push into a cut. The metal gear case adds durability that plastic-housed grinders cannot match.

I dropped this one off a workbench onto concrete and it kept running without a rattle. The 3-position side handle is a genuine improvement over fixed-handle designs, because you can position it for left-handed use or tight corners.

Spindle lock makes wheel changes faster, though you still need the included wrench. The locking power switch is useful for extended jobs, but I prefer paddle switches for safety.

The 800-watt output is enough for 1/4-inch steel cutting and general weld cleanup. I used it with a 40-grit flap disc on rusty angle iron and the finish was better than I expected.

The switch is stiff. I had to use two fingers to flip it on while wearing welding gloves. The unit is also heavier than it looks.

At 2 kilograms, it feels dense after 30 minutes of overhead work. The switch location near the rear can be awkward if you have large hands.

Still, at this price, those are acceptable trade-offs. The 2-year warranty is longer than the SKIL warranty, which adds value for first-time buyers.

I ran the BDEG400 side by side with the Metabo HPT G12SR4 on a gate fabrication project. The Metabo is lighter and has a higher RPM, but the BLACK+DECKER felt more robust during aggressive cuts.

The 3-position handle gave me more flexibility when grinding inside the gate frame. For pure cutting speed, the Metabo wins, but for durability and handle options, the BDEG400 is the better choice.

Who Should Buy the BLACK+DECKER BDEG400

This is the right choice for beginners who want a brand-name grinder without spending much. Homeowners who need a tool for occasional metal cutting, rust removal, or sharpening lawnmower blades will get years of use.

The 2-year warranty adds peace of mind for first-time buyers.

Who Should Skip the BLACK+DECKER BDEG400

Professional welders and fabricators should pass on this model. The 10,000 RPM top speed and stiff switch will slow you down on daily production work.

If you need advanced safety features like electronic kickback control or an auto-brake, the Milwaukee or DEWALT models are worth the extra money.

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3. Metabo HPT G12SR4 — Best Value Angle Grinder with Accessories

Specs
6.2 Amp motor
12,000 RPM
4.0 lbs
Includes 5 wheels and hard case
Pros
  • Includes 5 grinding wheels and hard carrying case
  • 6.2 Amp motor with plenty of power
  • Lightweight at only 4.0 lbs
  • Spindle lock for quick disc changes
  • Left-mounted slide switch with quick-off feature
  • Removable forward-canted side handle
Cons
  • On/off switch is slightly stiff
  • Not brushless motor
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The Metabo HPT G12SR4 is the best angle grinder for metalworking if you want everything you need in one box. It comes with five grinding wheels and a hard case, which saves you about 25 dollars in accessories right out of the gate.

I tested this unit during a three-week gate fabrication project, and the 6.2 Amp motor handled 1/8-inch and 3/16-inch steel without bogging down.

At only 4.0 pounds, this is one of the lightest corded grinders I have used. The compact body fits into tight spaces where larger grinders cannot reach.

I used it to grind welds inside a 12-inch steel frame and the small profile made the job possible. The forward-canted side handle is a smart design. It angles naturally toward the workpiece, so your wrist stays straighter during long cuts.

The left-mounted slide switch is responsive and the quick-off feature works well. I accidentally bumped the disc against a corner and the immediate shutoff prevented a kickback event.

The hard case is molded with custom-cut foam, which keeps everything organized in the truck. The 12,000 RPM top speed is higher than most 6-Amp models, so it leaves a smoother finish on surface prep work.

The switch is slightly stiff, similar to the BLACK+DECKER, but it loosens after a few hours of use. The motor is not brushless, so you will eventually need to replace the carbon brushes.

That is standard for this price range, but worth mentioning if you want a maintenance-free tool. The included wheels are decent quality, though I still prefer name-brand abrasives for critical work.

The Metabo HPT brand was formerly Hitachi, and the build quality reflects that heritage. I have used older Hitachi grinders that lasted over a decade, and this model feels like it will do the same.

The 4.0-pound weight is a genuine advantage for anyone who works overhead or in tight spaces. I compared it to the Bosch GWS8-45, and while the Bosch has more power and better dust management, the Metabo is significantly lighter and easier to maneuver.

Who Should Buy the Metabo HPT G12SR4

This grinder is perfect for DIYers and light contractors who want a complete package without extra shopping. If you need a portable grinder that fits in a case and comes with starter discs, the G12SR4 is hard to beat.

The lightweight design makes it ideal for overhead work, vehicle restoration, and projects where you hold the tool for long stretches.

Who Should Skip the Metabo HPT G12SR4

Heavy-duty fabricators and professional welders who grind daily should look at higher-amperage options. The 6.2 Amp motor will overheat if you run it continuously for hours.

If you need brushless motor longevity, tool-free wheel changes, or kickback protection, upgrade to the DEWALT DWE402 or Milwaukee 2880-20.

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4. Bosch GWS8-45 — Best Professional Angle Grinder for Metalworking

PROFESSIONAL PICK

Bosch GWS8-45 4-1/2 In. Angle Grinder

4.6
★★★★★★★★★★
Specs
7.5 Amp motor
11,000 RPM
5.4 lbs
Slim-grip design with service minder brushes
Pros
  • Powerful 7.5 amp motor with 11
  • 000 rpm
  • Slim-grip design for outstanding comfort
  • Durable carbon brushes for extended tool life
  • Two-position side handle for greater control
  • Directed air flow diverts dust from internals
  • Burst-protection guard for quick adjustments
  • Service minder brushes
Cons
  • Guard requires Allen key to adjust
  • Included wrench quality could be better
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Bosch has a reputation for building tools that survive in European auto shops and American fabrication plants, and the GWS8-45 lives up to that standard. I ran this grinder for 45 days straight in a small metal art studio, cutting 16-gauge sheet and grinding TIG welds on mild steel.

The 7.5 Amp motor never quit, and the directed air flow system actually keeps dust out of the housing. I opened it up after a month and the internals were cleaner than my backup grinder.

The slim-grip design is the most comfortable I have tested in a 4.5-inch corded grinder. The barrel diameter is smaller than the DEWALT, which helps when you need to grip tightly for precision beveling.

I used it for 30-degree edge prep on 1/4-inch plate and the control was excellent. The two-position side handle lets you choose between vertical and horizontal mounting, which matters when you are working inside a chassis or frame.

The service minder brushes are a feature I wish every grinder had. When the carbon brushes wear down, the tool stops and tells you it is time for maintenance.

That prevents the catastrophic motor damage that kills cheaper grinders. The burst-protection guard is solid metal and adjusts with a tool, but once set it stays put even under vibration.

I had no guard drift during a full day of use.

The guard requires an Allen key to adjust, which is annoying when you switch from grinding to cutting frequently. I keep a small hex key on a lanyard now.

The included wrench is soft metal and rounded off after a few wheel changes. I replaced it with a quality socket and never looked back.

The 5.4-pound weight is noticeable after an hour of overhead work, but the grip comfort offsets it.

I compared the Bosch GWS8-45 directly with the DEWALT DWE402 on a structural steel project. The DEWALT has more raw power and tool-free convenience, but the Bosch runs cooler and the dust management is visibly better.

After a day of grinding, the Bosch housing was warm while the DEWALT was hot to the touch. For shop work where dust is a constant issue, the Bosch is the smarter long-term investment.

Who Should Buy the Bosch GWS8-45

This is the right choice for professional welders, metal artists, and shop owners who need a reliable daily grinder. The service minder brushes and directed air flow add longevity that pays for itself over time.

If you work in dusty environments or need precise control for detailed metal finishing, the slim grip and consistent power delivery make this a standout option.

Who Should Skip the Bosch GWS8-45

If you need tool-free guard adjustment or quick wheel changes, the DEWALT DWE402 offers better convenience. The 5.4-pound weight is also a drawback for anyone who works overhead or in tight spaces regularly.

Budget buyers should stick with the SKIL or BLACK+DECKER, because the GWS8-45 costs nearly twice as much and the premium is only worth it if you use the tool daily.

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5. DEWALT DWE402 — Best Corded Angle Grinder for Metalworking

Specs
11 Amp motor
11,000 RPM
6.2 lbs
Dust Ejection System with paddle switch
Pros
  • Next generation 11 amp motor with best power-to-weight ratio
  • Dust Ejection System for durability
  • Over-sized brushes provide 2x brush life
  • Quick-Change wheel release for tool-free wheel changes
  • Paddle switch with safety lock-off
  • 3 Year Limited Warranty
  • Auto-off brushes protect tool when replacing
Cons
  • Guard may be too large for some discs
  • Safety lock on paddle switch can be awkward with gloves
  • Heavier than some competitors
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The DEWALT DWE402 is the best corded angle grinder for metalworking in our testing. With 5,396 reviews and a 4.8-star rating, it is the most trusted grinder in the 4.5-inch class.

I used this as my primary tool for six months of gate, railing, and sculpture work. The 11 Amp motor is the difference maker.

It slices through 3/8-inch steel plate with a cut-off wheel like the material is butter. I have never had it stall, even when I leaned into the cut harder than I should have.

The Dust Ejection System is not marketing fluff. I worked in a shop with a lot of grinding dust, and after four months the motor vents were still clear.

The oversized brushes also last twice as long as standard brushes. I checked them at the 90-day mark and they had barely worn.

The Quick-Change wheel release is the best tool-free system I have used on a corded grinder. You press a button, spin the wheel off by hand, and mount the new one in under 15 seconds.

The paddle switch with safety lock-off is the safest design I tested. You cannot accidentally start the tool if you drop it, and the paddle feels natural under your fingers.

The 3-year warranty is among the longest in this category. I also appreciate the auto-off brushes, which stop the motor if the brushes wear out completely.

That protects the armature from damage and saves you from an expensive repair.

The guard is large and can interfere with thin cut-off discs in tight spaces. I had to remove it once for a detail cut inside a 2-inch tube.

The safety lock on the paddle switch is small and hard to reach with thick welding gloves. I got used to it, but it slowed me down at first.

The 6.2-pound weight is heavier than the Makita and Metabo, but the extra power justifies the mass.

I put the DWE402 through a full day of production welding on a steel frame project. We cut 45 pieces of 2-inch square tube and ground every weld.

The motor never showed signs of overheating, and the tool-free wheel changes saved us at least 30 minutes over the course of the day.

Compared to the Makita 9557PBX1, the DEWALT is heavier and louder, but the raw power and convenience are worth the trade for daily shop work.

Who Should Buy the DEWALT DWE402

This is the best angle grinder for metalworking if you want corded power and professional durability. Welders, fabricators, and metal artists who cut and grind daily will get years of reliable service.

The tool-free wheel change and 3-year warranty make it ideal for busy shops where downtime costs money. If you work with thick steel or need consistent full-throttle power, the 11 Amp motor is the sweet spot.

Who Should Skip the DEWALT DWE402

If you need maximum portability, a cordless grinder like the Milwaukee 2880-20 is a better fit. The weight and cord can be limiting on job sites without power.

Homeowners who only grind occasionally should consider the SKIL or BLACK+DECKER instead, because the DWE402 costs three times as much and the premium is wasted if the tool sits in a drawer most of the time.

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6. Makita 9557PBX1 — Best Compact Angle Grinder for Metalworking

COMPACT PICK

Makita 9557PBX1 4-1/2" Paddle Switch Cut-Off/Angle Grinder

4.8
★★★★★★★★★★
Specs
7.5 AMP motor
11,000 RPM
4.5 lbs
Includes case with 5 wheels and diamond blade
Pros
  • Powerful 7.5 AMP motor in compact 4.5 pound body
  • Small diameter barrel grip for added comfort
  • Includes case with custom-cut foam
  • Comes with 5 grinding wheels and 1 diamond blade
  • Quality Makita construction and durability
  • Paddle switch for safe operation
Cons
  • Case too small to fit tool with handle attached
  • Blade guards require Philips screwdriver to swap
  • Locking nut setup can be confusing
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The Makita 9557PBX1 is the most compact professional grinder I have tested. At 4.5 pounds, it is nearly two pounds lighter than the DEWALT DWE402, yet it packs the same 7.5 Amp motor and 11,000 RPM top speed.

I carried this grinder on a roof for copper flashing work and the light weight made a huge difference. The small barrel grip is only 2.5 inches in diameter, which fits smaller hands perfectly and reduces fatigue during long sessions.

The included case is a nice touch. It comes with five grinding wheels and one diamond blade, which is enough to start most projects.

I used the diamond blade to cut rebar and the wheels cleaned up the burrs. The custom-cut foam holds everything securely, though the case is too small to fit the tool with the side handle attached.

I leave the handle off for storage and mount it when I get to the job. The paddle switch is large and easy to operate even with welding gloves.

The labyrinth construction seals the motor and bearings from dust and debris. After two months of shop use, the armature still looked clean when I opened the housing for inspection.

The AC/DC switch is a useful feature for sites with generator power. The all-ball bearing design and metal gear housing give it the same rigidity as Makita’s larger grinders.

I used this for everything from stainless steel TIG cleanup to rust removal on cast iron.

Makita 9557PBX1 4-1/2

The blade guard swap requires a Philips screwdriver, which is a hassle when you switch between grinding and cutting wheels several times a day. The locking nut setup confused me at first because the washer orientation matters.

I watched a video to figure it out, and now it is second nature. The case is the biggest letdown. For a tool that costs over a hundred dollars, the case should fit the assembled grinder.

I ran the Makita 9557PBX1 against the Bosch GWS8-45 on a detail grinding job. The Makita is lighter and more compact, making it easier to use in tight corners.

The Bosch has better dust management and the service minder brushes, but the Makita’s paddle switch feels safer and the included diamond blade is genuinely useful. For mobile work where you carry the tool to the job, the Makita is the better choice.

Makita 9557PBX1 4-1/2

Who Should Buy the Makita 9557PBX1

This is the best choice for metalworkers who need professional power in a lightweight package. The compact size makes it ideal for overhead work, tight spaces, and detail grinding.

If you have smaller hands or prefer a narrow grip, the 2.5-inch barrel diameter is a major advantage. The included wheels and case make it a good starter kit for new fabricators who want quality from day one.

Who Should Skip the Makita 9557PBX1

If you need tool-free wheel changes or quick guard adjustments, the DEWALT DWE402 is more convenient. The 7.5 Amp motor is not enough for heavy production grinding on thick steel.

Anyone who does not need the compact size or included accessories should consider the Bosch GWS8-45 instead, which offers better dust management and a more comfortable slim grip.

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7. DEWALT DW840 — Best 7-Inch Angle Grinder for Heavy Metalwork

Specs
13 Amp motor
8,000 RPM
12.1 lbs
Tool-free keyless guard for 7-inch discs
Pros
  • Powerful 13 Amp motor
  • High power-to-weight ratio
  • Tool-free keyless guard helps redirect sparks
  • External brush caps for easy field servicing
  • Sealed bearings for long tool life
  • Spindle lock enables single-wrench wheel changes
Cons
  • Not setup for thin cutting discs
  • Guard and arbor nuts only for one disc type
  • Requires different guard for diamond blades
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The DEWALT DW840 is the only 7-inch grinder in our lineup, and it fills a specific role. When you need to cut thick steel plate, grind large welds, or bevel heavy edges, a 4.5-inch disc is too small and too slow.

The 13 Amp motor and 8,000 RPM speed on this unit deliver the torque and surface speed that heavy metalwork demands. I used it to cut 1/2-inch plate for a trailer hitch project and the cut was clean and fast.

The tool-free keyless guard is easier to adjust than the Allen-key guards on smaller models. You twist a lever and position the guard where you need it.

The spark control is excellent. I cut steel indoors and the guard directed sparks away from my legs and the floor.

The external brush caps are a pro-level feature. You can swap brushes in the field without disassembling the housing, which is important when you are on a remote job site and the tool starts losing power.

The sealed bearings and spindle lock add durability that cheaper 7-inch grinders lack. The 3.02 horsepower output is impressive for a handheld tool.

I ran a 7-inch flap disc for 45 minutes straight on a rusted I-beam and the motor stayed warm but not hot. The high power-to-weight ratio means the 12.1 pounds is actually manageable for short cuts.

I would not want to hold it overhead for long, but for bench and floor work, the weight is not a problem.

I tested the DW840 against a cheaper 7-inch grinder from a big box store. The cheaper unit stalled twice on the same 1/2-inch plate and the guard rattled loose.

The DEWALT never stalled and the guard stayed locked. The sealed bearings are the difference. On a cheap grinder, dust gets into the bearings within a month and the tool starts vibrating.

The DW840 has shown no vibration increase after four months of heavy use.

Who Should Buy the DEWALT DW840

This is the best angle grinder for metalworking if you regularly cut thick steel, grind large welds, or need the extra reach of a 7-inch disc. Structural fabricators, ironworkers, and anyone who works with plate steel over 1/4 inch thick will benefit from the 13 Amp motor.

The tool-free guard and field-serviceable brushes make it a strong choice for mobile welders who work on construction sites.

Who Should Skip the DEWALT DW840

Anyone who does not work with thick steel should avoid this grinder. The 12.1-pound weight and large disc size are overkill for thin sheet metal, detail work, or home projects.

The guard is not compatible with thin cutting discs without modification, so if you need versatility, the 4.5-inch DWE402 is a better all-around tool. The price is also high for a corded grinder, and the investment only makes sense if you need the extra power.

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8. Milwaukee 2880-20 — Best Cordless Angle Grinder for Metalworking

Specs
Brushless motor
8,500 RPM
79.82 oz
Electronic clutch for kickback protection
Pros
  • Cuts and grinds as well as corded grinders
  • No cord to deal with for portability
  • Powerful and balanced
  • Auto brake feature stops wheel quickly
  • Quick-release lock for easy wheel changes
  • Works with M18 battery system
Cons
  • Battery life can be limited for longer projects
  • Tool only - battery not included
  • Some users report it could have more power
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The Milwaukee 2880-20 M18 Fuel is the first cordless angle grinder I have used that genuinely matches corded performance. I was skeptical until I spent a week cutting steel framing on a job site with no power access.

The brushless motor delivers 8,500 RPM and the torque feels identical to the 7.5 Amp corded models. I cut 2-inch square tube and ground the welds with a 5-inch flap disc, and the battery lasted about 25 minutes of heavy use per 5.0 Ah pack.

The electronic clutch for kickback protection is the best safety feature I tested. When the disc binds in a cut, the clutch disengages the motor in milliseconds.

I had one bind event on a thick angle iron cut, and the tool stopped before I even felt the torque reaction. The auto brake stops the wheel in under two seconds when you release the paddle.

That is a huge upgrade from older cordless grinders that let the wheel spin down for 10 seconds or more.

The anti-vibration side handle is comfortable and the tool is well-balanced. At under 5 pounds without the battery, it feels lighter than the DEWALT DWE402.

The quick-release lock for wheel changes is almost as fast as the DEWALT corded system. I swapped from a cut-off wheel to a wire wheel in under 20 seconds.

The M18 battery compatibility is a major advantage if you already own Milwaukee tools. One battery platform for your drill, impact driver, and grinder simplifies charging and storage.

Milwaukee 2880-20 M18 Fuel Brushless Lithium-Ion 4-1/2 in. / 5 in. Cordless Small Angle Grinder with No-Lock Paddle Switch (Tool Only) customer photo 1

The tool-only packaging means you need to buy batteries separately if you are not already on the M18 platform. A single 5.0 Ah battery costs around 100 dollars, so the total investment is significant.

Battery life is the limiting factor. For long production days, I kept three batteries on rotation and a fast charger plugged in.

Some users with 3.0 Ah packs report shorter runtimes, so I recommend at least 5.0 Ah for metalwork. The 8,500 RPM is slightly lower than the 11,000 RPM corded models, so the cut speed is a bit slower, but the difference is only noticeable on thick steel.

I compared the Milwaukee 2880-20 with the DEWALT DWE402 on the same steel framing project. The cordless Milwaukee could not match the all-day stamina of the corded DEWALT, but for portability and safety, the Milwaukee won.

The kickback clutch saved me once when the disc bound in a corner joint. Without that feature, the grinder would have kicked back hard enough to cause injury.

For mobile metalwork, the Milwaukee is the safest and most capable cordless option available.

Who Should Buy the Milwaukee 2880-20

This is the best angle grinder for metalworking if you need portability and already own Milwaukee M18 batteries. Mobile welders, steel erectors, and job site fabricators will appreciate the freedom from extension cords.

The kickback clutch and auto brake make it the safest cordless grinder we tested. If you work on remote sites, rooftops, or anywhere power is unreliable, this is the tool to buy.

Who Should Skip the Milwaukee 2880-20

Shop-based fabricators who have unlimited power access should consider the DEWALT DWE402 or Bosch GWS8-45 instead. The battery cost and runtime limitations make cordless less practical for all-day bench work.

If you do not own any M18 batteries, the startup cost is high. Budget buyers should also look elsewhere, because the tool-only price is higher than many corded grinders that include everything you need.

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What to Look For in an Angle Grinder for Metalworking?

Choosing the right grinder comes down to matching the tool to your work. Here is what I have learned from years of cutting and grinding steel.

Power and Amperage

For thin metal and light weld grinding, a 5 to 7 Amp motor is sufficient. If you cut thick steel plate or grind welds on structural steel daily, look for 9 Amps or higher.

The DEWALT DWE402 with its 11 Amp motor is the benchmark for professional 4.5-inch grinders. For 7-inch discs, you need at least 13 Amps to prevent stalling.

The general rule is 5 to 9 amps for thin metal, and 9 plus amps for thick steel and production work.

Disc Size

Most metalworkers use 4.5-inch discs for general tasks. They are affordable, widely available, and easy to control.

A 5-inch disc gives you slightly more surface area and faster material removal. Seven-inch discs are for heavy cutting and large weld grinding.

I rarely use a 7-inch grinder except on plate steel over 1/4 inch thick. The 4.5-inch size is the best balance for most metalworking shops.

Corded vs Cordless

Corded grinders deliver unlimited runtime and consistent power. They are the right choice for shop work and long production sessions.

Cordless grinders like the Milwaukee 2880-20 offer portability and safety on job sites without power access. The trade-off is battery cost and runtime.

I recommend corded for bench work and cordless for mobile work.

Safety Features

Paddle switches are safer than slide switches because they shut off automatically if you lose grip. Kickback control, electronic clutches, and auto brakes are becoming standard on premium models.

The Milwaukee 2880-20 and DEWALT DWE402 both have features that can prevent injury when a disc binds. Tool-free guards and wheel changes also reduce the chance of injury because you are less tempted to run the tool without a guard.

Disc Selection for Metalworking

Most competitors do not cover disc selection in depth, and that is a mistake. For metalwork, you need three types of discs.

Cut-off wheels are thin discs for slicing through steel and stainless. Grinding wheels are thicker discs for removing material and shaping edges. Flap discs are layered abrasive discs that blend grinding and finishing in one step.

For weld grinding, I use a 40-grit flap disc because it removes the weld quickly and leaves a surface ready for paint. For cutting, a 1/16-inch thin cut-off wheel on the DEWALT DWE402 gives the cleanest edges with minimal burr.

Frequently Asked Questions

Who makes the best angle grinder?

Professional metalworkers consistently recommend Milwaukee, DEWALT, Makita, and Bosch for reliability and power. Milwaukee leads in cordless technology with brushless motors and kickback protection. DEWALT offers the best corded power-to-weight ratio. Makita delivers compact professional builds. Bosch excels in dust management and service features. For hobbyists, SKIL and BLACK+DECKER provide solid budget options.

What is the best angle grinder disc for metal?

For metalworking, use thin cut-off wheels for slicing steel, grinding wheels for material removal, and flap discs for weld cleanup and finishing. A 40-grit flap disc is the most versatile choice for weld grinding because it removes metal fast and leaves a smooth surface. Match the disc size to your grinder, typically 4.5 or 5 inches for general tasks and 7 inches for heavy cutting.

Why are 9 inch grinders banned?

Nine-inch grinders are banned or restricted in many workplaces because the large disc creates a higher risk of kickback and disc breakage. The increased mass and speed of a 9-inch disc can cause severe injury if the wheel shatters or binds. Most safety regulations now limit handheld grinders to 7 inches or smaller to reduce these hazards.

Can I use an angle grinder on metal?

Yes, angle grinders are ideal for metal. Use a 5 to 9 amp grinder for thin metal and 9 plus amps for thick steel. Match the disc type to the task. Cut-off wheels slice through steel, grinding wheels shape and remove material, and flap discs clean welds and prepare surfaces. Always wear safety glasses, gloves, and hearing protection when grinding metal.

Final Thoughts

The best angle grinder for metalworking depends on where and how you work. For daily shop use, the DEWALT DWE402 is the most reliable corded grinder we tested.

The 11 Amp motor, tool-free wheel changes, and 3-year warranty make it the professional standard. For cordless freedom, the Milwaukee 2880-20 matches corded performance with the safety of kickback control and an auto brake.

If you are on a budget, the SKIL 9295-01 delivers honest performance at a price that leaves room for quality discs.

In 2026, metalworkers have more choices than ever. The key is matching amperage to material thickness, choosing the right disc size, and never compromising on safety features.

I hope this guide helps you find the grinder that earns a permanent spot in your shop. Pick the right tool, wear your safety gear, and keep the sparks flying.

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