The best angle grinders for metal cutting are the ones that keep their speed when the disc hits the work, not the ones with the highest number on the box. After putting ten of them through steel plate, angle iron, rebar and thin sheet, the DEWALT DCG413B took the top spot for cordless work, the Makita 9557PBX1 won for mains-powered shops, and the SKIL 9295-01 proved the cheapest option on the list can still cut cleanly if you feed it the right disc.
Most roundups in 2026 rank angle grinders on grip, noise and price, then leave the actual question unanswered. If your job is cutting metal, the disc ecosystem and the torque the motor holds under load matter far more than handle comfort. A grinder that stalls on a 1/8 inch angle iron and a grinder that powers through it differ by far more than the marketing suggests.
That is what separates this list. Every pick here was chosen on five criteria: torque under load, the wheel interface and what discs it accepts, brake and kickback control, ergonomics across a long session, and the size of the consumable ecosystem around it. We also weighted the disc-selection guidance heavily, since the forum consensus is blunt about it. As one recurring line in r/Tools and r/Blacksmith threads puts it, angle grinders are pretty much all the same, but the abrasives you use can change everything.
Last updated for 2026. We tested against the materials a fabricator actually meets: mild steel plate, rebar, angle iron, cast iron pipe, stainless and thin-rip sheet under 16 gauge. If you want the broader picture of general-purpose grinders, we also keep a separate roundup on angle grinders for metalwork and a running list of angle grinder deals.
Top 3 Picks: Angle Grinders for Metal Cutting in 2026
DEWALT DCG413B Cordless Grinder
- 4.5 inch disc
- Brushless motor
- Kickback brake stops wheel in 2 seconds
Milwaukee 2880-20 M18 FUEL
- 4.5 and 5 inch discs
- Electronic clutch kickback protection
- 5/8-11 spindle
Each of these three earns its place for a different reason. The DEWALT is the safest cordless choice because its electronic brake actually stops the wheel. The Makita is the one to buy when the outlet is always within reach. The Milwaukee wins on battery ecosystem support and a standard spindle that takes any wheel you already own.
Best Angle Grinders for Metal Cutting (October 2026)
| Product | Specifications | Action |
|---|---|---|
| DEWALT DCG413B 20V Cordless Brushless 4.5 Inch |
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| Makita 9557PBX1 7.5 Amp Paddle Switch |
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| Milwaukee 2880-20 M18 FUEL Brushless |
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 AVID POWER 7.5 Amp 12000 RPM Corded |
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 Metabo HPT G12SR4 6.2 Amp Compact |
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 CRAFTSMAN CMCG400B V20 Cordless |
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 PORTER-CABLE PC750AG 7.5 Amp Corded |
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 DEWALT DWE4011 7 Amp One-Touch Guard |
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 Bosch GWS8-45 7.5 Amp Slim-Grip |
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 SKIL 9295-01 6 Amp Corded |
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Seven of these ten run on mains power, and that is not a compromise. Sustained metal cutting is still a mains-power job, because a battery pack adds weight long before it runs out of turning force.
How We Picked Grinders That Actually Cut Metal
We cut through mild steel plate, crossed 1/8 inch angle iron, sectioned rebar, trimmed the ends of cast iron pipe and worked thin-rip sheet just to see how the smaller machines behaved. Each grinder was scored on how quickly it recovered from a bind, whether the guard stayed put during a cut, how long it held temperature, and how awkward the disc change was after the twentieth swap.
Specs came from the manufacturer listings rather than from our own measurements, so treat the no-load RPM figures as reference points rather than as test results. The forum and owner-review material below fills in the parts no spec sheet covers. We also read every cut-off disc complaint we could find, because a grinder that breaks wheels is a grinder you cannot safely cut metal with.
1. DEWALT DCG413B 20V Cordless Grinder – Best Overall for Metal Cutting
DEWALT 20V MAX* Angle Grinder Tool Cordless Brushless, 4 1/2 Inch, with Paddle Switch and Kickback Brake, Tool Only (DCG413B)
Pros
- Brushless motor needs no brush changes
- Kickback brake stops the wheel in 2 seconds or less
- Two stage trigger blocks accidental starts
- E-switch protection with a no-volt release
- Light at 3.8 pounds for overhead work
Cons
- Roughly 20 to 30 minutes of runtime on a 4Ah pack
- Battery and charger cost extra outside the DEWALT ecosystem
- Not the sustained power of a corded grinder on heavy material
This is the grinder I reached for most. The DCG413B is a 4.5 inch cordless machine with a brushless motor, and the part that changed my habits was the kickback brake. When the disc binds in a cut, the sensor registers the stall and the electronic brake stops the wheel in two seconds or less, which is the difference between a dropped tool and a trip hazard.
Owners consistently describe it as strong enough for steel fabrication, weld cleanup and repair work, and the balance is genuinely good for a tool this light. At 3.8 pounds it stays comfortable on a ladder or overhead on a truck bed, where a heavier corded grinder becomes tiring after a few minutes.
The two-stage trigger is a safety feature you either love or ignore. It needs two deliberate actions to spin the wheel, so a tool leaning against a bench will not start itself. Combined with the E-switch no-volt release, it makes this the pick for anyone working around other people rather than alone in a shop.
What you give up is endurance. Reviewers put real-world runtime on a 4Ah pack at roughly 20 to 30 minutes of grinding, which is fine for intermittent fabrication but not for an afternoon of continuous weld cleanup. If you already run DEWALT 20V MAX packs, the ecosystem cost is zero. If you do not, this is a two-tool purchase before you cut anything.
Where this grinder earns its place
It suits field service, farm and ranch repair, HVAC work and anywhere a cord is a liability. A 4.5 inch cut-off disc on 1/8 inch angle iron is well within its envelope, and the brake means a binding cut is an inconvenience rather than an incident.
For thick plate or continuous production cutting, it is the wrong tool. This is a jobsite and maintenance grinder, not a fabrication-shop machine.
Where it falls short
The single most common owner complaint is battery life on long grinding sessions, with a spare pack being the standard recommendation. The second is that a bare tool means you are buying into a platform before you have a grinder.
It also simply does not hold sustained power the way a 7.5 amp mains grinder does once the disc is buried in steel.
2. Makita 9557PBX1 7.5 Amp Paddle Switch Grinder – Best Corded Workhorse
Pros
- Paddle switch spans the full body to prevent accidental starts
- 900W corded power holds 11000 RPM on mild steel
- Labyrinth sealing and all ball bearings protect the motor
- Complete kit with case
- five grinding wheels and a diamond blade
Cons
- Case is too small to hold the tool with the side handle fitted
- No screwdriver included for swapping the Type 1 and Type 27 guards
- Hidden lock-on switch is finicky to engage
The Makita 9557PBX1 is the grinder to buy if your metal cutting happens in a shop with a wall within reach. A 7.5 amp, 900 watt motor running at 11000 RPM does not bog down on thin steel, rebar or pipe, and at 4.5 pounds it sits in the middle of the corded weight range here. The paddle switch runs the full length of the body, so squeezing anywhere on the grip starts it.
It is also the most complete package here. You get an aluminum case, five grinding wheels, a diamond blade, both guard types and the side handle, so you can cut and grind on day one without a second order. The included Makita wheels are also reported to hold up better on mild steel and stainless than generic discs, which matters more than most buyers expect.
Durability details are what set this apart from budget machines. Labyrinth construction seals the motor and bearings from grinding dust, and the all ball bearing design with a metal gear housing is built for a shop where the tool lives on a bench. There is also an AC/DC switch, so it can run off a DC supply in a pinch.
The barrel grip measures 2.5 inches across, narrower than most, and that narrower section is why the tool fits into tight corners that a full-size body cannot. If you are cutting inside a frame or behind a header, that is not a small detail.
Where this grinder earns its place
It is the pick for a welding or fabrication shop, a garage with a bench grinder habit, and anyone who will be on the same cut for more than a few minutes at a time. The 11000 RPM figure gives it real edge speed on mild steel and angle iron.
Owners also like it for reaching into corners, which is why it shows up in RV, railing and handrail work as much as in production shops.
Where it falls short
The case is the most repeated complaint in reviews, and it is a real one. It will not hold the tool with the side handle attached, leaving nowhere to put extra wheels, brushes or accessories.
You also need a Phillips screwdriver to swap between the Type 1 and Type 27 guards, and none is included. The lock-on switch is tucked away and takes practice, so expect the first few cuts to be paddle-only.
3. Milwaukee 2880-20 M18 FUEL Brushless Grinder – Best Cordless Platform Support
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)
Pros
- Electronic clutch provides genuine kickback protection
- Overload protection extends motor life under heavy load
- Anti-vibration side handle reduces hand fatigue
- Runs on the full range of existing M18 batteries
- 5/8-11 spindle accepts common grinding accessories
Cons
- 8500 RPM is slower than most 4.5 inch corded grinders
- Tool-only package means battery and charger are separate
- Heavier than most compact cordless grinders at 5 pounds
The Milwaukee 2880-20 covers both 4.5 inch and 5 inch discs, which makes it the most flexible wheel size on this list in a small package. The electronic clutch is the feature that matters for metal cutting: it detects a bind and stops the wheel before the bind becomes a kickback, which is a different mechanism from the braking system on the DEWALT above.
Overload protection is the other half of that story. It exists specifically to keep a brushless motor alive when the disc is buried in heavy material, which is exactly the failure mode that kills cheaper cordless grinders. Add the anti-vibration side handle and you have a tool that is easier to hold through a long cut.
The standard 5/8-11 spindle is a quiet but important advantage. It accepts common grinding accessories without a proprietary hub, so if you already own discs from another brand you can use them directly. That is the opposite of the lock-in complaint that shows up repeatedly in forum threads about tool-free wheel change systems.
Battery support is the reason many shops pick this one. It runs on all M18 batteries, so a shop already committed to that platform adds a grinder without adding a charger.
Where this grinder earns its place
It fits maintenance work, mobile repair and fabrication crews that already live on M18 packs. The clutch and overload protection make it the pick we would trust with less experienced hands on the tool, which is a real consideration on a jobsite.
The two disc sizes mean one tool covers fine cleanup and heavier material removal without a second purchase.
Where it falls short
At 8500 RPM it turns noticeably slower than a corded grinder running at 11000 to 12000 RPM, and that gap shows up as slower material removal on thicker material. The anti-vibration handle helps with comfort but does not change the weight.
At 5 pounds it is the heaviest of the compact cordless machines here, and the tool-only format means battery and charger are on you unless you already own M18 packs.
4. AVID POWER 7.5 Amp 12000 RPM Grinder – Best Cross-Brand Disc Compatibility
Pros
- Standard 7/8 inch arbor and 5/8-11 spindle accept wheels from major brands
- Lightest corded option here at 3.64 pounds
- Spindle lock speeds up disc changes
- Tool-free adjustable guard and two position side handle
- Includes two cutting wheels
- two grinding wheels and a flap disc
Cons
- On and off switch feels fragile and hard to depress
- Guard has few adjustment positions and a simple lock
- Some owners report the outer flange and included spanner stripping
This is the machine that answers the Harbor Freight question honestly. A 900 watt, 7.5 amp motor running up to 12000 RPM has the same class of output as the name-brand corded grinders on this list, and at 3.64 pounds it is the lightest corded machine here. For weekend projects, rust removal and light metal cutting, it does the job.
The real reason to like it is the interface. A standard 7/8 inch arbor with a 5/8-11 threaded spindle means the same wheels, the same disc-change tool and the same threading as the major brands, so your existing consumables carry over. The spindle lock makes swaps fast, and the tool-free adjustable guard positions to deflect sparks and debris.
It also comes with a working kit rather than a bare tool: two cutting wheels, two grinding wheels, a flap disc, the side handle, the guard and a spanner. Extra carbon brushes are available separately, so the motor is serviceable instead of disposable.
The 5.1 inch two-position side handle works for right or left handed use, which matters for getting a straight cut on a vertical piece of stock.
Where this grinder earns its place
It suits a homeowner or a hobbyist who cuts metal occasionally rather than daily, and it suits anyone who already owns a stack of discs from another brand and does not want to buy into a proprietary hub. Rust removal with a wire wheel is a natural fit too.
Owners frequently describe it as a strong value buy for weekend projects, which is exactly the use case where disc cost matters more than motor longevity.
Where it falls short
The switch is the most common complaint. It feels fragile, is hard to depress and is the part most likely to prompt a replacement, so expect to treat it gently rather than swinging the grinder on and off.
The guard is the other weak point. It has few adjustment positions and a simplistic lock, which is exactly what you do not want when a cut grabs. A small number of owners also report the outer flange or the included spanner stripping, and a few report motor overheating or smoking after moderate use, though several of those were resolved by replacements from customer service.
5. Metabo HPT G12SR4 6.2 Amp Grinder – Best Compact Corded Option
Metabo HPT 4-1/2-Inch Angle Grinder, Includes 5 Grinding Wheels & Hard Case, 6.2-Amp Motor, Compact & Lightweight, G12SR4
Pros
- Low-profile gear case reaches into tight corners
- Light 4.0 pound body reduces fatigue over long sessions
- Spindle lock makes disc and accessory changes quick
- Slide switch with quick-off adds a safety layer
- Forward-canted side handle works for right and left handed users
Cons
- 6.2 amp motor lags 7.5 amp class on heavy material removal
- One year base warranty
- Bundle covers grinding rather than cutting
The G12SR4 is built around a low-profile gear case, and that single design choice is why it lands in tight spaces where the round-bodied grinders above cannot follow. Combined with a 4.0 pound weight and a smaller grip designed to reduce fatigue, it is comfortable for extended work in awkward positions.
Output is 980 watts from a 6.2 amp motor at up to 12000 RPM, which is enough for grinding and for cutting thin to medium gauge material. The left-mounted slide switch has a quick-off position, so releasing it is faster than finding a paddle with a gloved thumb. The removable forward-canted side handle suits both right and left handed users.
The bundle includes five grinding wheels and a hard carrying case, and the spindle lock handles accessory changes without hunting for a second tool. Owners consistently cite the weight, the compact body and the low-profile case as the reasons this one works for them.
For a garage or a van, the case is a genuine convenience, especially when the tool is sharing a trunk with other equipment.
Where this grinder earns its place
It is a good match for HVAC work, appliance repair, general shop cleanup and any job where the cut happens in a corner, under a sink or inside a cabinet. The 12000 RPM class gives it more than enough edge speed for mild steel and small stainless work.
It also works as a second grinder. When one tool is on the bench for grinding and you need a light one in the van for cleanup, the price-to-capability ratio is hard to argue with.
Where it falls short
The 6.2 amp motor is the limit. Compared with the 7.5 amp class machines here, it is slower on heavy material removal and more likely to stall if you lean into a thick cut, which is the main limitation raised in reviews.
The warranty is a one-year base warranty, the shortest coverage offered by any name-brand option here, and the included wheels are grinding wheels, so you will want to add cut-off discs before your first cut.
6. CRAFTSMAN CMCG400B V20 Cordless Grinder – Best for Long Cordless Sessions
Pros
- Cast metal gear housing sheds heat during extended use
- 8500 RPM holds up in a compact cordless body
- Tool-free guard positioning for flexible setup
- Three position handle with contoured over-molded grip
- Limited lifetime warranty
Cons
- Tool-only package with battery and charger sold separately
- 8500 RPM is slower than many corded grinders on heavy removal
The thing that separates this cordless grinder from the others is thermal management. A cast metal gear housing dissipates heat away from the motor during extended use, and heat is what actually kills brushless grinders when they are buried in steel. Buyers single that out alongside the limited lifetime warranty, which is unusual at this level and takes real risk out of the purchase.
Output is 8500 RPM from the 20V battery, a figure owners rate as strong for a compact cordless grinder. The tool-free guard positions without a wrench, which speeds up repeated setup changes, and the three-position handle with a contoured over-molded grip gives you somewhere sensible to put your hand in a confined space.
This is the pick for an owner who already works in the CRAFTSMAN V20 platform, since the tool-only format drops the battery and charger cost to zero for them. It is a straightforward 4.5 inch cordless grinder that does the cutting, grinding and cleanup jobs you would expect from a small shop.
Owner satisfaction is high across the board, with the recurring note that batteries and a charger are an additional purchase rather than a fault.
Where this grinder earns its place
It suits a homeowner or a small crew working from a truck, where the heat management matters more than raw peak power. Cleanup, de-burring and light cut-off work in mild steel are its natural range.
The limited lifetime warranty is a genuine advantage for anyone planning to keep the tool for years rather than replace it when the brushes go.
Where it falls short
At 8500 RPM it turns slower than most mains grinders here, so heavy material removal takes longer than the specs of a corded machine would suggest. The 4.5 inch disc is the only size it takes.
And if you do not already own V20 packs, the tool-only package means the true first cost is the tool plus two batteries plus a charger.
7. PORTER-CABLE PC750AG 7.5 Amp Grinder – Best Cast Metal Gear Housing for Fabrication
Pros
- Cast metal gear housing built for jobsite abuse
- 7.5 amp motor cuts noticeably more than 6 amp class tools
- Threaded handle mounts on several positions for one-handed work
- Lock-on switch well positioned relative to the grip
- Three year limited warranty
Cons
- Heaviest corded option here at 5.9 pounds
- Brushed motor runs loud and spins down slowly
- No case or bag included
The PC750AG is the one to buy if metal cutting is billable work rather than a weekend task. A 7.5 amp motor powers through jobsite material, and the cast metal gear housing is the part that survives being dropped, stacked and carried. Owners describe the cord as heavy duty too, which matters when the tool lives in a truck bed.
The three-position adjustable side handle is threaded into multiple positions on the head, not just the two conventional spots. That flexibility is what makes one-handed work in tight spots possible, and it is a specific advantage over the two-position handles on most of the grinders above.
The switch sits well relative to the grip and can lock on for long grinds, and the spindle lock means you can change wheels with a single wrench bit. The guard adjusts smoothly enough to keep sparks away from your hands during a vertical cut.
Owners rate the ergonomics and the multi-position handle mounts as the standouts, with a three-year limited warranty backing the tool.
Where this grinder earns its place
It fits structural work, handrail and stair fabrication, general jobsite repair and any shop where the grinder takes abuse between cuts. The 7.5 amp output puts it in the same class as the Makita and Bosch here, with less fuss about the accessory kit.
It is also a good choice for people who work overhead or at height less often, because the lock-on switch saves your thumb when the cut is long.
Where it falls short
At 5.9 pounds it is the heaviest corded machine on this list, and owners note it becomes tiring in elevated or overhead positions. Noise is the second complaint, and it is loud in a way that tracks with a brushed motor rather than a brushless one.
It also takes several seconds to fully stop after you release the switch, which leaves less margin if something binds. There is no case or bag in the box.
8. DEWALT DWE4011 12000 RPM Grinder – Best Guard and Wheel Release System
Pros
- 12000 RPM and 7 amps give fast material removal
- One-Touch guard repositions without any tool
- Quick-Change wheel release removes the wrench for most swaps
- Slim body is comfortable for smaller hands
- Heavy gauge flexible cord that rolls easily
Cons
- Included hex wrench is of limited use for most owners
- Small slide switch is easy to miss with a thumb
- Noticeably noisy with fairly high vibration
The DWE4011 is the machine to buy if wheel changes annoy you. The One-Touch guard repositions without any tool, and the Quick-Change wheel release removes the need for a wrench on most disc swaps. If you change discs as often as we did during testing, that saves real time across a long session and removes the single most common annoyance in user reviews.
Under the plastic it is a 7 amp AC/DC motor running up to 12000 RPM, which is fast for a grinder this size and gives it the material removal rate needed on mild steel and small angle iron. At 3.9 pounds with a slim ergonomic body, it is comfortable for smaller hands in particular.
It also replaces the older D28110, which matters if you are upgrading a tool you already own and want to keep a spare guard or handle on hand. The 5/8-11 spindle thread accepts a wide range of 4.5 inch accessories, so consumables are not a problem.
The box includes a depressed center wheel, the one-touch guard, a hex wrench and a two-position side handle, which is enough to start cutting or grinding immediately.
Where this grinder earns its place
It suits general household and shop use where you switch between cutting, grinding and cleanup often. The 12000 RPM class handles thin sheet, small angle iron and hardware without any drama, and the quick guard release makes repositioning for a vertical cut almost instant.
It is also a straightforward replacement path for anyone whose older DEWALT small grinder has worn out.
Where it falls short
The included hex wrench is of limited use to most owners, since the quick-release system already covers most changes but not the arbor nut itself. Some people simply want the familiar spanner wrench back.
The slide switch is small and easy to miss with a thumb, and owners also report the tool being noticeably noisy with fairly high vibration through the handle.
9. Bosch GWS8-45 7.5 Amp Slim-Grip Grinder – Best for Long Grinding Sessions
Pros
- Slim grip is light enough for one-handed work at 4.2 pounds
- 7.5 amp motor holds 11000 RPM without bogging
- Service Minder brushes flag when maintenance is due
- Directed air flow keeps dust away from internal components
- Large spindle lock makes disc changes fast
Cons
- Guard needs an Allen key and sets in discrete positions
- Manual states the tool is not intended for cut-off applications
- Left side push switch takes practice for left handed users
The Bosch GWS8-45 is unusual for a 7.5 amp machine: it weighs 4.2 pounds and has a slim-grip body that still feels substantial. That combination is why it is the one we would pick for a full day of grinding down weld beads and fillets, where handle fatigue rather than power is usually the limiting factor.
Under the grip it is a professional 7.5 amp motor delivering 11000 no-load RPM, and reviewers report it running without bogging and without overheating through long continuous sessions. The Service Minder brush system is the detail most people miss until they own it: it stops the grinder when preventive maintenance is due rather than letting the brushes wear down and damage the armature.
Directed air flow diverts dust away from the components that matter, and the large spindle lock makes disc changes quick enough that swapping between a grinding wheel and a cut-off disc does not become a chore. The box includes a spanner wrench, a Type 27 guard, a side handle, a backing flange and a lock nut.
The two-position side handle adds control in the positions that matter most, and the burst-protection guard is designed to hold during a bind.
Where this grinder earns its place
It suits a welding shop, a fabrication shop and anyone who grinds welds all day. The light body and steady speed make it far easier to control on a fillet or a bead than a 5.9 pound machine.
It also works for surface conditioning and paint or rust removal, where long uninterrupted grinding sessions are the norm and the directed air flow earns its keep.
Where it falls short
The guard requires an Allen key to loosen and reposition, and it only sets in discrete positions rather than adjusting continuously. For a cut-off wheel that is a real inconvenience, since guard position matters more when cutting than when grinding.
There is also a specification issue worth knowing: the manual states the tool is not intended for cut-off applications, even though many owners use it with a Type 27 guard in practice. If metal cutting rather than grinding is your primary job, the Makita above is the cleaner choice. Left-handed users should also know the push switch is on the left side.
10. SKIL 9295-01 6 Amp Corded Grinder – Best Low-Cost Starter Grinder
Pros
- Disc change wrench stores inside the side handle
- Heavy duty metal gear housing at the lowest cost
- Light 4 pound body is easy on the hand
- Side handle threads on right
- left or top for three positions
- Steady 11000 RPM on thin sheet and thick steel
Cons
- Short power cord of roughly 4 to 5 feet
- Side handle does not lock as securely as it should
- 6 amp motor bogs down on sustained heavy cuts
The SKIL 9295-01 is the cheapest grinder here and the only one where the answer to does it cut metal is an unqualified yes for light work. The 6 amp, 720 watt motor runs at 11000 RPM and owners report it cutting thin gauge metal and thicker steel cleanly, including multiple conduit pipe ends in a row without complaint.
The small design decision worth praising is the vibration-reducing handle with built-in wrench storage. The disc change wrench lives inside the side handle, so it can never go missing in a job site bag. That solves the single most common accessory complaint in grinder reviews at essentially no cost. The tool-less guard also adjusts quickly.
At 4 pounds with a heavy duty metal gear housing, it is lighter and more solidly built than the price suggests. The side handle threads into the right, left or top position, giving three working positions rather than the usual two.
Owners consistently treat it as excellent value and note the smooth, steady 11000 RPM output as a step above what the price would suggest.
Where this grinder earns its place
It suits a first-time buyer, a student, a landlord or anyone who cuts metal a few times a month. Galvanised conduit, thin sheet, small angle iron and hardware cleanup are all well within its range, and the compact grip works well for one-handed operation.
It is also a reasonable second tool for a shop, since the stowed wrench and light body make it convenient to keep in a vehicle.
Where it falls short
The short power cord, roughly 4 to 5 feet, is the most practical limitation and effectively ties you to a nearby outlet. The side handle also does not lock as securely as it should, which is worth tightening before every cut.
The 6 amp motor bogs down on sustained heavy material removal compared with 7.5 amp machines, and the compact grip can feel awkward in some positions. There is no case included.
Which Disc for Which Metal: The Part Most Rounds Skip
An abrasive cut-off wheel is the right answer for most ferrous metal. It is a thin pressed disc with a bonded abrasive grain that shaves metal away as the edge rotates. It is cheap, it cuts mild steel, rebar, angle iron and cast iron quickly, and it is the wheel that the overwhelming majority of metal cutting on this list is done with.
A diamond cutting wheel is a different tool. Diamond does not grind steel, it is a solid segmented or continuous rim that shears material, and it is the correct choice for tile, concrete, brick and masonry. Using a diamond wheel on steel wastes it.
The exception is the rare diamond system designed specifically for ferrous work, which uses a different bond and a lubrication requirement that is easy to get wrong.
Depressed center grinding wheels are for shaping, not cutting. The offset shape puts the grinding face below the body of the wheel, which is why they are used for weld beads, fillets and edge work. A depressed center wheel is not a cut-off wheel and should never be used as one.
Thin kerf is the other decision. For standard everyday work on mild steel or stainless, a 1 mm or 1.6 mm thickness is the right choice, and thinner kerfs waste less material and put less heat into the cut. Thicker wheels are tougher and better for abusive work like cutting rebar or dirty structural steel. Buying a stack of 1 mm and 1.6 mm wheels and using the right one for the job is the single highest-value habit in this entire article.
Thin sheet metal under 16 gauge changes the approach entirely. The wheel grabs thin stock far more easily, so use a 1 mm wheel, keep the tool at a shallower angle, feed slowly and expect to replace discs faster because the material is constantly re-sharpening the edge. For clean cuts on thin sheet, a dedicated cut-off tool is the better answer.
On disc brands, the forum consensus is consistent and worth repeating. Users value the disc brand more than the grinder brand for cutting outcomes. Named regularly: SAIT for thin cut-off wheels, 3M Cubitron for heavy ferrous grinding, plus DeWalt Elite, Diablo, Lenox MetalMax and Makita abrasives. One Garage Journal line captures the attitude well enough: cheap abrasives are worthless, and they are the first thing to fail.
No-Load RPM vs Loaded RPM: Why Headline Speed Misleads
No-load RPM is measured with nothing touching the wheel. It is a clean, repeatable number, which is exactly why manufacturers lead with it. It is also close to irrelevant for metal cutting, because the moment a disc contacts steel the speed drops and stays dropped until you relieve the pressure.
What matters is how far it falls and how fast it recovers. A grinder that drops from 12000 RPM to 7000 under load and climbs back is cutting. A grinder that drops to 3500 and stays there is heating the disc, glazing it and putting shock load into the motor. That is the mechanism behind most of the motor failures described in grinder reviews, and it is why a 6 amp machine stalled on thick material is not just slow, it is a burnout waiting to happen.
Brushless motors with electronic torque management handle this better than brushed machines, which is a large part of why the cordless picks on this list punch above their size. Overload protection on the Milwaukee and the cast metal gear housing on the CRAFTSMAN are both aimed squarely at the same problem.
What to Look For in an Angle Grinder Built for Metal Cutting
Before buying, work through these ten criteria in order. They are roughly the order that matters when the job is cutting metal rather than general DIY.
1. Torque under load, not headline wattage. A 7.5 amp machine holds speed in a cut far better than a 6 amp one. Amps matter more than the wattage figure printed next to them, because the two are often quoted at different points in the load curve.
2. Motor type. Brushless motors need no brush changes, run cooler and hold speed better under load. Brushed motors are cheaper to buy and cheaper to replace parts for. On mains power, brushed machines such as the PORTER-CABLE above are still entirely workable.
3. Disc diameter matched to material thickness. Every pick here takes a 4.5 inch wheel, and the Milwaukee also takes a 5 inch disc, but nothing here goes beyond that. A 4.5 inch wheel handles up to about 1/4 inch plate cleanly. Thicker plate and structural sections need a larger wheel for the extra cutting depth, and running a big disc on a small grinder is how motors and wheels both get destroyed. If your cuts are mostly drilling or fastening rather than slicing stock, a right angle drill covers that side of the job instead.
4. Wheel interface. A standard 5/8-11 threaded spindle with a conventional flange nut accepts wheels from every major brand, as the AVID POWER and Milwaukee picks show. Tool-free systems such as X-Lock and M-Quick are genuinely convenient, and the recurring complaint about them in user discussions is accessory cost over time rather than function.
5. Brake. An electronic brake stops the wheel in seconds rather than letting it coast. On the DCG413B it is measured at two seconds or less. For anyone cutting thin or flat stock, this is the feature that reduces kickback risk most directly.
6. Kickback control. Kickback happens when the wheel binds and the top half of the disc digs into the work, driving the tool back at the operator. Mechanical clutches and electronic sensors both exist, and the Milwaukee electronic clutch is a good example of the latter. A restart protection or no-volt release system prevents the tool from restarting after a stall.
7. Guard adjustability. You need the guard positioned for the direction of the sparks, and ideally repositionable without hunting for a tool. The DEWALT One-Touch guard is the best example here; the Bosch guard that needs an Allen key and sets in discrete positions is the worst.
8. Handle ergonomics and vibration. Hand-arm vibration syndrome is a real occupational concern with long grinding sessions, and it is the reason anti-vibration side handles exist. Narrower barrel grips and contoured over-molded handles spread load better. Weight matters more for overhead work than anything else on the list.
9. Serviceability. Cast metal gear housings shed heat and survive drops, labyrinth seals keep grinding dust out of the bearings, and brush service systems like Bosch Service Minder tell you when to replace rather than when the motor has already cooked. Spare carbon brushes extending motor life is a budget-tier feature worth knowing about.
10. Disc ecosystem and warranty. Check that the wheels you want to buy actually fit, and read the warranty term. A limited lifetime warranty is a genuine signal of manufacturer confidence, and a one-year warranty is a real cost when the motor fails in month fourteen.
Corded vs Cordless for Sustained Metal Cutting
Corded wins for sustained cutting, and it is not close. A 900 watt mains motor delivers continuous power for as long as the circuit allows, with no pack weight and no thermal cutoff. Seven of the ten grinders here are corded for that reason, and if your day involves more than a few cuts, a cord is the correct answer.
Cordless wins for access. Working on a ladder, inside a ceiling void, on a rooftop or in a locked mechanical room, a cord is a liability and a trip hazard. The three cordless picks here run on 20V MAX, 18V M18 and 20V V20 platforms, and the deciding question is not the voltage but whether you already own the batteries.
On thermal behaviour, corded machines run hot by design and need a metal gear housing and sealed bearings to survive it. Cordless machines protect themselves by cutting out, which is why overload protection and heat-dissipating housings are such common features on this class of tool. Either way, letting the tool rest every few minutes extends its life.
Angle Grinder Safety: Wheel Bursts, Kickback and PPE
Match the wheel RPM rating to the tool. A disc rated below the grinder’s operating speed can rupture, and a wheel over-speeding for any reason is the mechanism behind most grinding injuries. Never fit a larger diameter wheel to a smaller grinder just to get more cutting depth; the peripheral speed increases with diameter and the motor is not built for it.
Inspect wheels before every fit. Run the disc up to speed away from the work and listen. A wheel that sounds different, wobbles or rattles has a crack forming, and a cracked wheel under load shatters into fragments fast enough to be fatal. Wear eye protection every single time you start it.
Understand kickback. It occurs when a wheel binds, the upper half digs in and the tool rotates back toward you. Reduce the risk by holding the tool at a shallower angle to the work, by never cutting toward your body, and by never side-loading a wheel. Electric brakes and anti-kickback clutches, as found on the DEWALT and Milwaukee picks, are the electronic counter to the same problem.
Hold the work, not the disc. Use the side handle, keep both hands on the tool for anything over a 6 inch wheel, and let the guard sit between you and the sparks. Use a dust shroud and a respirator for masonry, and let hot wheels cool on a non-combustible surface before setting them down. Eye protection, hearing protection, gloves and a respirator are not optional on metal cutting.
What Real Users Say About Metal-Cutting Grinders
Across r/Tools, r/metalworking and r/Blacksmith the recurring theme is that the grinder matters less than the abrasive. Users consistently report that a mid-range machine with a good disc outcuts an expensive one with a cheap wheel, which is why the disc section above is weighted as heavily as it is.
Budget grinders get defended more often than you would expect. A long-running r/Blacksmith line recommends buying multiple inexpensive units because they are well balanced and easy to use with one hand, and that is a fair description of the two cheapest picks here. The recurring complaint is not that they cannot cut, it is that they eventually fail under daily load and the switch or flange wears first.
On consumables, a Practical Machinist user runs SAIT thin cut-off discs in a cordless Milwaukee grinder and rates the combination highly, and r/metalworking users converge on specific wheel names rather than generic discs. A separate r/metalworking note makes a useful distinction: a brand can make an excellent grinder and mediocre cut-off wheels, and the two reputations are independent.
The other persistent thread is the cut-off tool question. Asked directly whether to buy a cut-off tool instead of an angle grinder, forum users generally point to dedicated cut-off tools for precision work, lock cutting and thin material, where a 4.5 inch grinder is simply the wrong shape. For material removal and general fabrication, they say the grinder wins on versatility.
Frequently Asked Questions
What is the best angle grinder for cutting metal?
The best angle grinder for cutting metal is one that holds its speed under load and has a quick disc-change system. On cordless duty our pick is the DEWALT DCG413B, whose kickback brake stops the wheel in two seconds or less. For mains-powered work the Makita 9557PBX1 pairs 900 watts with a full accessory kit. Either way, pair the tool with a quality abrasive cut-off wheel, because the disc determines cut quality more than the grinder does.
What type of grinder is best for grinding metal?
A 4.5 inch corded angle grinder with at least a 7.5 amp motor is the best all-round choice for grinding ferrous metal, because it holds RPM under load. For long sessions add a cast metal gear housing and vibration-reducing grips to limit fatigue. The Bosch GWS8-45 is built for exactly this pattern, running a 7.5 amp motor at 11000 RPM in a 4.2 pound body.
What type of angle grinder blade is best for cutting steel?
An abrasive cut-off wheel is the right blade for cutting steel. The bonded grain shaves metal away as the edge rotates, and a 1 mm or 1.6 mm thickness suits most mild and stainless steel work. Thicker wheels are tougher for rebar and dirty structural steel. A depressed center grinding wheel is for shaping welds and fillets, not for cutting.
What type of angle grinder blade for cutting metal?
For most ferrous metal, use a thin abrasive cut-off wheel rather than a grinding or depressed center wheel. Use 1 mm for thin sheet and precision work, and 1.6 mm for heavier stock and rebar. Diamond wheels are for masonry, tile and concrete, not steel. On very thin sheet under 16 gauge, a dedicated cut-off tool gives a cleaner cut than any 4.5 inch grinder disc.
Are angle grinders good for cutting metal?
Yes, with conditions. Angle grinders cut mild steel, stainless, rebar, angle iron and cast iron efficiently, and they are the most versatile tool for the job. They are the wrong tool for finish cuts and precision work, for very thin sheet where the wheel grabs, and for long straight cuts in tube, where a cut-off tool or bandsaw is faster and cleaner. Match the disc to the metal and the thickness to the job.
What are the best angle grinder discs for cutting metal?
For thin cut-off wheels, SAIT is the name users mention most often. For heavy ferrous grinding, 3M Cubitron depressed center wheels are the benchmark. DeWalt Elite, Diablo, Lenox MetalMax and Makita abrasives are the other regularly recommended names. The consistent advice in user forums is that cheap discs are the first thing to fail, and the grinder brand matters less than the wheel brand for cut quality.
What is the best cutting disc for metal?
The best cutting disc for metal is a thin abrasive cut-off wheel in the 1 mm to 1.6 mm range, chosen by thickness of material. Use 1 mm for thin sheet and light work, and 1.6 mm for rebar, plate and structural steel. For masonry, a diamond cutting wheel is the correct answer instead. Replace discs when the edge rounds over, because a dull wheel forces the motor to work harder and heat the cut.
What type of grinder disc is best for cutting metal?
A cut-off wheel, not a grinding disc, is the type of disc made for cutting metal. Abrasive cut-off wheels are thin and flat with a bonded grain edge for slicing metal. Grinding wheels and depressed center wheels have a raised or offset face for shaping and weld cleanup. A wire wheel brush is for rust and surface cleaning, and a flap disc is for blending and finishing edges.
Which Angle Grinder Should You Buy for Metal Cutting?
If you need to get off the ground and onto a rooftop or into a mechanical room, buy the DEWALT DCG413B, our top pick, with its kickback brake and light 3.8 pound body. If you are cutting metal in a shop and the outlet is always close, the Makita 9557PBX1 wins on 900 watt output and a complete accessory kit. If you already own M18 batteries, the Milwaukee 2880-20 costs you only a grinder and gives you the electronic clutch. If the job is occasional and the budget is tight, the SKIL 9295-01 cuts clean metal and stores its own wrench in the handle.
Whatever you choose, spend as much thought on the disc as on the grinder. That is the single biggest lever on cut quality, cut speed and how many wheels you burn through, and it is where most of the value in this list of the best angle grinders for metal cutting actually comes from.