DeWalt DCS438B 20V MAX XR Cut-Off Tool Review: Worth It? (October 2026)
The DeWalt DCS438B is a compact cordless 3-inch cut-off tool for small cuts in metal, tile, stone, plastic and other materials. It includes three wheel types and an adjustable dust shroud, but you need a compatible 20V MAX battery.
On this page (8 sections)
- What does the DeWalt DCS438B do well?
- How do the included wheels and depth adjustment help?
- What should you know about dust, visibility and wheel changes?
- How should you set up and care for the DCS438B?
- Is the DCS438B safe for your planned cuts?
- How does the DCS438B compare with other 3-inch tools?
- What should you check before buying the DeWalt DCS438B?
- Is the DeWalt DCS438B worth choosing?
The DeWalt DCS438B is a cordless 3-inch cut-off tool for compact cuts in materials such as metal, tile, stone and plastic. It comes with three wheel types, an adjustable dust shroud and an LED, making it a flexible option for short cuts and repairs.
The main buying question is whether this format suits your work. Choose it for controlled, smaller cuts and an existing DEWALT 20V MAX battery setup; skip it if you need a full-size grinder for broad grinding or long cuts.
What does the DeWalt DCS438B do well?
The DCS438B is strongest when you need a portable tool for small cuts in different materials. DEWALT describes it for metal, tile, stone, plastic, drywall and fiber cement.
DEWALT DCS438B 20V MAX XR 3-Inch Cut-Off Tool: Best for multi-material cuts
- Brushless motor
- 20,000 rpm no-load speed
- 3 included wheels
- Adjustable dust shroud
A compact cordless cut-off tool with wheels for bonded abrasive, multi-material and tile cutting. The adjustable dust shroud includes an AirLock connection for a DEWALT extractor.
Pros
- Includes 3 wheels for different cutting tasks
- Tool-free depth adjustment with inch and millimeter markings
- Bright LED for dark work areas
- Onboard hex wrench storage and spindle lock
Cons
- Bare tool, so the battery is separate
- A 3-inch cut-off tool is not a direct replacement for a full-size angle grinder
It has a brushless motor and reaches 20,000 rpm with no load. The package includes a bonded abrasive wheel, a diamond multi-material wheel and a diamond tile wheel, so you have options for different cutting jobs from the start.
That range can be useful for repair work where the material changes from one task to the next. The compact 3-inch format is also easier to place in a tight work area than a larger grinder, though it is meant for cutting rather than covering a wide grinding surface.
If you are comparing it with full-size grinders, start with our guide to angle grinder sizes. The right size depends on the disc and the work you need to do.
Who should consider the DeWalt DCS438B?
Choose the DCS438B if you already own compatible DEWALT 20V MAX batteries and need a cordless cut-off tool for short, precise cuts. Its included wheel set suits users who work with more than one material and want a dedicated compact cutter.
It is also a practical fit for occasional repair or installation work where portability and depth setting matter. The tool-free adjustment on the dust shroud uses inch and millimeter markings, which helps when a cut needs to stop at a set depth.
Skip it if your main jobs involve removing material over a broad area, making long continuous cuts, or using larger discs. In those cases, a standard angle grinder is a better match for the task.
How do the included wheels and depth adjustment help?
The DCS438B gives you three wheel types for different cutting materials. Use the bonded abrasive wheel for jobs suited to that wheel, the diamond multi-material wheel for compatible materials, and the diamond tile wheel for tile work.
Always match the wheel to the material and follow the tool and wheel instructions. Do not assume one wheel can safely handle every material just because the tool itself is described for several types.
The dust shroud has a tool-free depth adjustment and an adjustable shoe. Use the markings to set the wheel depth for the cut, then check the setting before starting so the wheel does not go deeper than the task requires.
For a closer look at wheel categories, read our guide to angle grinder discs and their uses. The DCS438B uses 3-inch cut-off wheels, so confirm compatibility instead of assuming a larger grinder disc will fit.
What should you know about dust, visibility and wheel changes?
The removable shroud has an AirLock connection for a DEWALT extractor, which is sold separately. A connected extractor can help manage dust at the cut, but use the setup recommended in the manual and wear protection suited to the material.
The integrated LED lights the work area. It helps when a cut falls in a dim spot, but you still need a clear view of the cut line and a stable work position before switching the tool on.
The tool has onboard hex wrench storage and a spindle lock for wheel changes. Keep the wrench in its storage point, and disconnect the battery before changing a wheel or doing maintenance.
The tool also supports forward and reverse operation, letting you change cut direction for an application. Check the manual for the correct setup and direction for your wheel and workpiece.
How should you set up and care for the DCS438B?
Start by selecting a wheel designed for the material, then inspect it for damage and confirm it is mounted correctly. Keep the guard and shoe in place, set the cutting depth for the task, and secure the workpiece before making a cut.
If you use the dust shroud with an extractor, connect it before cutting and make sure the hose does not interfere with your grip or the workpiece. Keep the cutting area clear so the tool can move without snagging on cords, loose material or offcuts.
After use, remove the battery before cleaning or maintenance. Clear dust from the tool and shroud with a method allowed by the manual, check the wheel and guard, and store the wrench where it will be available for the next change.
Avoid forcing the wheel through the material. Let the cutting edge do the work, keep a steady grip, and stop if the wheel binds or the tool shifts unexpectedly.
Is the DCS438B safe for your planned cuts?
Use the DCS438B only for cuts suited to the tool and wheel, with the guard fitted and the work secured. Compact size does not remove the risks from sparks, dust, fragments or kickback.
Read the manual before use and wear eye and hearing protection, plus protection suited to the material. Keep hands clear of the wheel path and do not twist the tool in a cut.
Our angle grinder safety guide explains guards, protective gear and kickback basics that also matter for cut-off work. For a quick explanation of the guard, spindle lock and other parts, see angle grinder parts explained.
How does the DCS438B compare with other 3-inch tools?
The DCS438B is the clearest choice if you want its specified three-wheel set and adjustable dust shroud. Milwaukee, Makita and RYOBI may suit you better when you already own batteries on those platforms.
| Product | Best for | Wheel size | No-load speed | Power | Our score |
|---|---|---|---|---|---|
| DEWALT DCS438B 20V MAX XR 3-Inch Cut-Off Tool | multi-material cuts | 3 in | 20,000 rpm | 20V MAX battery | 8.7 |
| Milwaukee 2522-20 M12 3-Inch Cut-Off Tool | M12 battery owners | 3 in | 12V battery | 8.4 | |
| Makita XCM01Z 18V LXT 3-Inch Cut-Off Tool | depth adjustment | 3 in | 18V LXT battery | 8.2 | |
| RYOBI ONE+ HP 18V 3-Inch Cut-Off Tool | ONE+ battery owners | 3 in | 18V ONE+ battery | 8.1 |
When is the Milwaukee 2522-20 a better fit?
The Milwaukee 2522-20 fits users who already own M12 batteries and want reversible blade rotation. Its brushless motor and one-handed grip are the main stated features.
It uses a 12V battery platform, while the DCS438B uses 20V MAX batteries. Compare the batteries and charger you already have before choosing between the two tools.
When should you choose the Makita XCM01Z?
Choose the Makita XCM01Z if you use Makita 18V LXT batteries and want a tool-less dust collection guard. With the guard installed, it supports cuts up to 5/8 in deep.
It also has forward and reverse operation and a one-handed design. The DCS438B includes three specified wheel types, while the Makita package does not specify its wheel contents.
Does the RYOBI ONE+ tool fit a different setup?
The RYOBI cut-off tool suits existing ONE+ battery owners who want an adjustable guard and depth guide. It supports cuts up to 0.62 in deep and includes forward and reverse cutting capability.
The wheel package is unclear because wheels are described as included in some kits. Choose the DCS438B if having three specified wheel types in the package matters to you.
What should you check before buying the DeWalt DCS438B?
Check your battery, the materials you cut and the size of your usual work before buying. The DCS438B is a bare tool, uses 3-inch wheels and includes three wheel types for different cutting tasks.
If you already own DEWALT 20V MAX batteries, the bare-tool format may make sense. If you do not, factor in the need for a compatible battery and charger when comparing it with a kit or another cordless platform.
Think about whether you will use the dust shroud and extractor connection. The extractor is separate, so this feature adds value only if you already have a compatible setup or plan to get one.
Finally, consider cut length and depth. This tool makes sense for compact cuts and depth-controlled work, while a larger grinder is the better choice for broader grinding or larger discs.
Is the DeWalt DCS438B worth choosing?
Choose the DeWalt DCS438B for compact cordless cuts across multiple materials, especially if you already have 20V MAX batteries and want the included wheel set. Its adjustable dust shroud, LED and tool-free depth setting make it a useful fit for small cutting jobs.
Pick Milwaukee, Makita or RYOBI if their battery platform already fits your tools. If you want a larger grinder for general cutting and grinding, compare our best DeWalt angle grinders.
Frequently asked questions
Is the DeWalt DCS438B an angle grinder?
The DCS438B is a cordless 3-inch cut-off tool for smaller cutting tasks, rather than a general-purpose angle grinder for broad grinding work. It can cut materials such as metal, tile, stone, plastic, drywall and fiber cement when paired with a suitable wheel.
Does the DeWalt DCS438B include a battery?
No, the DCS438B is sold as a bare tool. It includes three wheels, an adjustable dust shroud, an arbor adapter ring and a hex wrench, but you'll need a compatible 20V MAX battery and charger for cordless use.
What wheels come with the DCS438B?
The DCS438B includes a bonded abrasive wheel, a diamond multi-material wheel and a diamond tile wheel. Match the wheel to the work material, and follow the tool and wheel instructions for mounting, guarding and use.
Can the DCS438B collect dust?
The DCS438B has a removable dust shroud with an adjustable shoe and an AirLock connection. It can connect to a DEWALT extractor, sold separately; use the shroud and extraction setup according to the tool manual and the material you're cutting.
