DeWalt DWS780 Corded 12" Sliding Compound Miter Saw
DeWalt DWS780 Corded 12" Sliding Compound Miter Saw
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Product Details
Product Details
Key Features
Overview
The DEWALT DWS780 12 in. Double Bevel Sliding Compound Miter Saw is built for contractors, finish carpenters, remodelers, and serious DIY users who need one saw that can handle trim work and larger dimensional lumber. This is a sliding compound miter saw designed for accurate crosscuts, miters, bevel cuts, and finish work on the jobsite or in the shop. Model Number: DWS780.
The core of this saw is a 15 amp motor that turns the blade at 3,800 RPM. On the job, that means enough blade speed and power for repeated cuts in framing stock, hardwood trim, base, and crown without the saw feeling underpowered. DEWALT also pairs that motor with a sliding design, so you get the reach needed for wider boards instead of being limited to narrower trim pieces.
Capacity is one of the reasons the DWS780 has stayed relevant for so long. The back fence design is made to cut up to 2 x 16 dimensional lumber at 90 degrees and 2 x 12 at 45 degrees. Tall sliding fences support crown molding up to 7-1/2 in. nested and base molding up to 6-3/4 in. vertically against the fence. If you bounce between casing, base, crown, shelving, and deck or remodel punch work, that range matters because it lets one miter saw cover a lot of material without constant workarounds.
Accuracy features are where this saw earns its keep. The integrated XPS cut line positioning system gives you an adjustment-free cut line indicator, so you can see where the blade will hit without relying on a separate laser setup. DEWALT also uses an adjustable stainless steel miter detent plate with 10 positive stops, plus a cam lock miter handle with detent override. In plain terms, this helps you move quickly from common angles to custom angles while keeping repeatability under control.
The overall design is built around jobsite practicality. Dual horizontal steel rails, an innovative clamping mechanism, and linear ball bearings are there for smoother sliding action and durable tracking over time. An oversized bevel scale makes bevel changes easier to read, and the saw miter range of 60 degrees right and 50 degrees left gives you more flexibility for real trim layouts and awkward wall conditions. Spindle lock is included, which speeds up blade changes when you swap from a general-purpose blade to something better suited for finish work.
Dust management is not perfect on any miter saw, but DEWALT specifically calls out an efficient dust collection system that captures over 75% of dust generated when connected properly. The included dust bag helps with lighter indoor work and quick setup, while the rear dust chute and port support more controlled cleanup than running the saw with nothing attached. That makes a difference when you are cutting indoors, in finished spaces, or in a shop where cleanup time adds up.
From a portability standpoint, the DWS780 weighs 56 lbs. That is not featherweight, but for a 12 inch dual bevel sliding compound miter saw with this much capacity, it is still manageable for transport and storage. The side handles help when moving the saw on and off a bench or stand. It is a corded tool, so you are trading battery freedom for steady power and no runtime concerns during longer cutting sessions.
Who should buy it? If you need a full-capacity corded miter saw for trim carpentry, remodeling, deck work, punch list jobs, or general construction, this is the kind of saw that covers a lot of ground without getting overly complicated. If your work is mostly narrow casing and occasional weekend projects, it may be more saw than you need. But if you regularly cut wide boards, nested crown, or large base, the DEWALT DWS780 12 in. Double Bevel Sliding Compound Miter Saw makes sense because its power, cut line visibility, and capacity all pull in the same direction.
Built to Handle Wide Stock

This saw is built for users who need one miter saw to cover both trim duty and bigger lumber cuts. The sliding setup and back fence design give you more usable capacity than a basic non-sliding saw.
- Cuts up to 2 x 16 dimensional lumber at 90 degrees
- Cuts up to 2 x 12 dimensional lumber at 45 degrees
- Tall sliding fences support nested crown and vertical base molding
Made for Fast Angle Changes

When you are bouncing through repetitive trim cuts, setup speed matters almost as much as motor power. The detent system, wide miter range, and large bevel scale are there to help you move quicker without giving up control.
- 10 positive miter stops for common angle settings
- Miter range goes 60 degrees right and 50 degrees left
- Cam lock miter handle with detent override helps with fast, repeatable adjustments
What's in the Box
- (1) DEWALT DWS780 12 in. Double Bevel Sliding Compound Miter Saw
- (1) 12 in. 60T Carbide Blade
- (1) Blade Wrench
- (1) Vertical Material Clamp
- (1) Dust Bag
Key Specifications
| Tool Type | 12 in. Double Bevel Sliding Compound Miter Saw |
|---|---|
| Power Source | Corded Electric |
| Amperage | 15 Amps |
| No-Load Speed | 3,800 RPM |
| Blade Diameter | 12 in. |
| Arbor Size | 5/8 in. |
| Maximum Miter Left | 50° |
| Maximum Miter Right | 60° |
| Cut Capacity at 90° | Up to 2 x 16 |
| Cut Capacity at 45° | Up to 2 x 12 |
| Crown Molding Capacity | Up to 7-1/2 in. nested |
| Base Molding Capacity | Up to 6-3/4 in. vertical against fence |
| Positive Miter Stops | 10 |
| Weight | 56 lbs |
| Cord Length | 6 ft |
| Made In | Mexico |
Compatibility
Built For
Pro Tip
If you use the DWS780 for both framing and finish work, keep a dedicated fine-finish blade on hand and use the spindle lock to swap blades instead of forcing one blade to do everything. You will get cleaner trim cuts and put less strain on the saw during long days.
Tool Nut's Take
DEWALT DWS780 12 in. Double Bevel Sliding Compound Miter Saw Still Gets the Job Done
This is a proven corded miter saw with the capacity and cut line visibility that make daily trim and remodel work easier.
- Who it's for: Pros and committed DIY users who need one saw for trim, molding, shelving, and wider crosscuts in framing stock.
- Why it stands out: The mix of 15 amp power, XPS cut line indication, 2 x 16 crosscut capacity at 90 degrees, and tall sliding fences gives it real range instead of one-trick-pony performance.
- Worth knowing: It is still a 56 lb corded 12 inch slider, so plan your bench or stand setup accordingly. But if you want capacity and repeatability more than ultra-light weight, this is a smart buy.
Common Questions
- Is this a sliding miter saw? Yes. The DEWALT DWS780 is a sliding compound miter saw, which allows longer crosscuts than a non-sliding model.
- What is the miter range? The saw miters up to 50 degrees left and 60 degrees right.
- Does it support crown and base molding? Yes. Tall sliding fences support crown molding up to 7-1/2 in. nested and base molding up to 6-3/4 in. vertically against the fence.
- What blade size does it use? It uses a 12 in. blade with a 5/8 in. arbor.

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