The DWS779 and DWS780 sit at the center of many woodworking shops because both are 12-inch, 15-amp sliding compound miter saws built around DEWALT’s classic dual-rail design. People shopping the pair usually know the look, the power range, and the reputation, then try to figure out which of the two fits their bench, their budget, and the kind of cuts they actually make day to day. This roundup walks you through each saw and the genuine OEM and aftermarket support that keeps either one running cleanly for years, so you can spend less time guessing and more time cutting straight, square miters.
The Leading Options At A Glance
DEWALT Double-Bevel Compound Miter Saw 12-Inch (DWS716)
N538855 Miter Saw Washer for DeWALT Saws
Dust Collection Port for DWS779 and DWS780
DEWALT OEM N600007 Blade Wrench for Miter Saws
DeWalt DWS780 Replacement Dust Chute (N041726)
DeWalt OEM N544383 Miter Saw Kerf Plate
DeWalt DWS779R 12 in. Sliding Compound Miter Saw (Renewed)
Miter Saw Wrench N600007 for DeWalt Saws
Taking A Closer Look At The Options
You start every trim day with the same ritual: pull the saw out, set up a stop block, and start knocking out miters. The DWS716 lives in that rhythm. Its 12-inch blade pairs with a 15-amp motor that runs up to 3,800 rpm, and the double-bevel head tilts both directions without yanking the workpiece off the fence.
Inside a real jobsite, that means you’re not constantly flipping boards to make opposing bevels, and the cam-lock miter detent plate (the click-stop ring that snaps the saw to common angles like 22.5, 30, and 45 degrees) keeps your repeat cuts honest. The taller sliding fences give you enough vertical support for crown molding and wide baseboards, so the saw feels right at home on a trim cart or a small shop bench.
Bright Spots
- Double-bevel design that saves you a flip on opposing cuts
- Stainless-steel miter detent plate with positive stops for repeatable accuracy
- Tall fences that handle thick baseboard and nested crown
- Lightweight, portable 12-inch platform that suits trim crews
- Cam-lock miter system that feels solid once engaged
Things To Consider
- 12-inch capacity sits below the DWS779 and DWS780 sliding reach
- No factory XPS shadow line, so blade-shadow alignment costs extra
- Dust collection is functional, not aggressive, so a shop vac helps indoors
Key Specs
Best Suited To
Trim carpenters, remodelers, and serious DIYers who need an accurate 12-inch compound miter saw with genuine double-bevel convenience.
Consider Something Else When
Reach for the DeWalt DWS779R 12 in. Sliding Compound Miter Saw (Renewed) if you want the larger sliding crosscut of the DWS779 platform for deck boards and wider trim, and don’t need new-in-box packaging.
A miter saw blade change sounds simple until a worn washer lets the blade wobble on the arbor. This N538855 replacement washer is the small part that solves that headache. It’s designed to sit in the blade clamp stack on 12-inch DeWALT miter saws, including the DWS716, DWS779, and DWS780, so you restore the proper clamping force the saw originally had.
For anyone doing their own blade swaps, a fresh washer is cheap insurance. The part number is printed on the source diagram, which makes it easy to confirm fit before you place the order, and the part arrives as a single replacement washer rather than a full kit, so you only replace what actually wore out.
Where It Delivers
- Direct-fit part for the listed 12-inch DeWALT miter saws
- Restores proper blade-clamp tension for safer cuts
- Single-piece replacement rather than a full rebuild kit
- Confirmed N538855 part number for easy cross-checking
Worth Noting
- Not all DeWALT models are covered, so verify against the parts diagram
- Small hardware, easy to misplace during the swap
Made For
Owners who change blades themselves and want a correct factory-style washer on hand before they crack open the arbor.
Not Your Match When
You’re better served by the DEWALT OEM N600007 Blade Wrench for Miter Saws if you need a more complete tool to handle the full blade swap rather than a single internal washer.
The stock dust bag on the DWS779 and DWS780 catches the obvious chips and lets the fine dust escape right onto your bench. This aftermarket dust port solves that by giving you a real hose connection on the back of the saw, so the chips go somewhere useful instead of into your lungs.
The kit includes a set of adapters sized for the most common vacuum and shop-vac hose diameters, and the install is a straightforward bolt-on swap. If you run your saw in a garage or a basement shop with a shop vac already in the corner, this is one of the cleaner upgrades you can make, and unlike the DeWalt DWS780 Replacement Dust Chute (N041726), it works on both the DWS779 and DWS780 platforms.
Real Benefits
- Real hose port for shop vac and dust extractor hookups
- Multiple adapters cover the most common hose diameters
- Easy install without permanent modification to the saw
- Cuts cleanup time after long cutting sessions
Points To Note
- Seal quality depends on how well the included gaskets seat
- Capture is rarely 100 percent on a sliding miter saw
Who It Suits Best
Shop owners and serious DIYers running a DWS779 or DWS780 in an enclosed space where fine dust becomes a real chore.
Where Another Pick Suits Better
Pick the DeWalt DWS780 Replacement Dust Chute (N041726) if you only need to replace a cracked or missing factory dust duct on a DWS780 and want the original OEM-style fit.
Every miter saw ships with a small blade wrench, and they always seem to vanish right when you actually need one. DEWALT’s OEM N600007 is the factory-spec replacement that snaps onto the saw body for onboard storage, so it lives with the tool instead of in a drawer you’ll forget.
One end loosens the arbor bolt (the central bolt that holds the blade to the motor shaft) during blade changes, and the opposite end handles the Torx and hex fasteners on the blade guard and fence. The build is up to DEWALT’s typical factory quality, which is why it’s a common reorder for shops that rotate between finish, framing, and metal-cutting blades on the DWS715, DWS779, or DWS780.
A Few Strong Suits
- Genuine OEM part, so fit and finish match the original
- Onboard storage keeps the wrench with the saw
- Dual-function profile handles arbor and guard adjustments
- Compatible with the DWS715, DWS779, and DWS780 platforms
Trade Offs
- Costs a bit more than generic aftermarket wrenches
- Small enough to lose if you remove it from the saw
Right Fit For
Owners who swap blades for different materials and want the correct factory tool on the saw at all times.
Look Elsewhere When
The Miter Saw Wrench N600007 Fits For De-walt Miter Saw is a lower-cost alternative if you’re happy with a non-OEM equivalent and mainly need the function, not the factory stamp.
Plenty of older DWS780 saws end up with a cracked or brittle dust duct after years of heat and fine MDF dust. The N041726 is the genuine OEM dust duct assembly, sold as a single bulk-packed replacement, so you can swap in a fresh chute without resorting to tape or plastic salvage parts.
The part is specific to the DWS780 Type 1 12-inch compound miter saw, so cross-check your owner’s manual or the existing part before ordering. Once it’s bolted on, dust flow returns to factory spec, which matters if you’ve already routed the saw’s exhaust into a shop-vac setup.
Good Reasons To Consider
- Genuine OEM replacement for an exact factory fit
- Single-piece dust duct assembly, no extra hardware hunt
- Restores proper airflow for shop-vac hookups
Honest Caveats
- Only fits the DWS780 Type 1, so double-check the model
- Bulk packing means no retail box or instructions
Whose Shelf It Belongs On
DWS780 owners whose original dust duct has cracked, warped, or gone missing during a past teardown.
Swap It Out When
Pick the Dust Collection Port for DWS779 and DWS780 if you’d rather upgrade to a true shop-vac hose port than replace the original factory chute.
The kerf plate (the low-profile insert that sits in the saw’s table around the blade) is one of those parts nobody thinks about until a cut catches a chipped edge. The OEM N544383 is a direct-fit DEWALT replacement measuring roughly 17.25 by 3.25 by 0.50 inches, and it suits the DWS779, DWS780, and several DHS790 variants.
A fresh plate tightens up zero-clearance support around the blade, which helps with tear-out on fine trim cuts and keeps small offcuts from diving into the throat. It’s a small part, but it’s the kind of detail that separates a clean cut from one that leaves fuzz on the bottom edge of your trim.
Everyday Wins
- Genuine OEM part for a precise factory fit
- Covers both the DWS779 and DWS780 platforms
- Reduces tear-out on the underside of trim cuts
- Straightforward swap with basic hand tools
Small Caveats
- Single plate only, so order two for a full replacement set
- Not compatible with every DEWALT 12-inch saw, so check the model list
Perfect Match For
Owners obsessed with cut quality who want to keep their DWS779 or DWS780 table in factory shape after years of use.
Another Choice May Suit
Step up to the DEWALT Double-Bevel Compound Miter Saw 12-Inch (DWS716) if the kerf plate issue is just a symptom of an older saw you’re ready to replace rather than repair.
The DWS779 is the workhorse of the pair, and the DWS779R brings that same sliding 12-inch platform to DIYers on tighter budgets through the refurbished program. The saw miters 60 degrees to the right and 50 degrees to the left, which is plenty of travel for deck work, baseboard, and most standard trim.
Buying renewed means the unit has been professionally inspected and tested, so it arrives ready to plug in and cut. You give up the brand-new packaging and warranty, and the cosmetic condition may show light wear, but you get the same cutting geometry that built the DWS779’s reputation in the first place.
A Strong Showing
- Sliding 12-inch capacity handles wider stock than a non-slider
- Wide miter range covers common compound angles
- Lower entry cost than a brand-new DWS779
- Inspected and tested before shipping
Points To Keep In Mind
- Cosmetic condition varies by unit
- Renewed warranty terms differ from new-in-box coverage
- Availability can be inconsistent as stock rotates
Who Should Grab It
DIYers and weekend builders who want DWS779 cutting performance without paying full new-saw pricing, and who don’t mind a refurbished unit.
Reach For A Different Pick When
Step up to the DEWALT Double-Bevel Compound Miter Saw 12-Inch (DWS716) if you need a new factory warranty, light jobsite use, and the convenience of double-bevel action for trim.
This aftermarket N600007 wrench is the budget answer to a lost or damaged factory tool. It measures about 5.1 by 2.10 by 0.35 inches and fits the DWS713, DWS715, DWS716, DWS779, and DWS780, plus several cordless and slide-compact models, so a single spare covers most of the workshop.
The trade-off is build quality. The factory OEM wrench feels more robust in the hand and snaps more securely into the saw’s onboard storage slot. For a backup that lives in a drawer or a tool bag, though, this version covers the same arbor and guard-fastener jobs at a noticeably lower cost.
What It Does Well
- Broad model coverage across the DEWALT 12-inch line
- Handles both arbor bolts and Torx guard fasteners
- Lower cost than the OEM equivalent
- No special tools required for blade changes
Some Limits To Know
- Aftermarket build feels lighter than the OEM tool
- Onboard storage fit may be looser than the factory wrench
Built With In Mind
Shops that have already lost a factory wrench and want a low-cost replacement that works across multiple DeWALT saws.
Skip It When
Choose the DEWALT OEM N600007 Blade Wrench for Miter Saws if onboard storage fit and factory-grade build matter more than the small savings.
Picking The Right Saw And Support Parts
Choosing between the DWS779 and DWS780 starts with the kind of cuts you make most. The DWS779 is the simpler sliding platform with a 15-amp motor, geared toward framers, deck builders, and DIYers who want wide crosscut capacity. The DWS780 adds a factory XPS shadow line (an LED that casts a blade shadow on the workpiece) and a few refinement touches that finish carpenters appreciate. Either way, you are looking at a heavy bench tool, so plan for a dedicated miter saw station or stand before you buy.
Blade size and motor power matter less than the cut geometry. A 12-inch blade handles 2x lumber and most nested crown, while a 15-amp motor covers the same stock without bogging down. Capacity numbers look similar on paper, but sliding reach, miter range, and fence height make a bigger day-to-day difference. Look for tall sliding fences if you routinely cut nested crown molding, and check the miter range (the DWS779R, for example, swings 60 degrees right and 50 degrees left) for compound angles.
Think about dust control and maintenance before you commit. A shop vac plus a quality dust port is far more pleasant than the stock bag, and small wear parts like the kerf plate, dust chute, blade wrench, and arbor washer are easy to keep on hand so the saw never sits idle. Buying a renewed DWS779R makes sense if you mainly need the cutting platform, while a new DWS716 fits trim-focused workflows that don’t need sliding reach.
Finally, weight and footprint often get ignored. Both the DWS779 and DWS780 are substantial saws that need a stable surface and a clear cut path. Measure your bench, leave room for long stock to feed through, and confirm you can lift the saw onto a stand or jobsite table without help. A saw that is too heavy to move is a saw you stop using.
Key Considerations Across These Picks
Common Buying Slip Ups
Skipping the part-number check is the most frequent mistake. The DWS780 dust chute, for example, fits the Type 1 only, and the N544383 kerf plate is specific to certain model variants. Always confirm your saw’s exact model and part number before ordering replacements, otherwise you end up with a return and a wasted afternoon.
Where The Extra Money Goes
The jump from a basic sliding miter saw to a feature-loaded model pays for things you actually feel on the job: an XPS shadow line that speeds up alignment, a more refined miter detent plate, and tighter factory tolerances. For trim carpenters who measure twice and cut hundreds of times, those touches add up to faster work and cleaner joints. For weekend DIYers, the savings on a renewed or simpler model often make more sense.
