DeWalt DWS780 Miter Saw Review — 12″ Double-Bevel Sliding Compound

What the Research Shows

The DEWALT DWS780 is widely recognized across independent published assessments as one of the best miter saws available, with TechGearLab specifically naming it their top overall pick with an 85 out of 100 score, citing cutting power, ease of use, and high cut capacity as the deciding factors. Published manufacturer specifications confirm a 15-amp motor producing 3,800 RPM, a 12-inch double-bevel sliding compound design, and DEWALT’s XPS Cross Cut Positioning System — an LED-based shadow line indicator that projects the blade’s exact cutting path onto the workpiece before the cut is made.

Research across multiple independent published reviews, including Pro Tool Reviews and Wood Workers Guild of America, consistently frames the DWS780 as a worthy successor to DEWALT’s earlier DW-series miter saws, with published assessments specifically highlighting its dual horizontal steel rail slide configuration as a meaningful stability improvement over vertical-rail sliding designs used by some competitors.

Cutting Capacity & Precision

Published specifications confirm the DWS780 accommodates miter cuts up to 60 degrees to the right and 50 degrees to the left, with dual bevel capability up to 48 degrees in both directions — an unusually wide combined range that published assessments confirm covers the substantial majority of trim, framing, and crown molding cutting angles professional carpenters encounter. The back fence design, which published reviews note increases usable cut depth compared to some competing miter saws, allows the DWS780 to handle taller crown molding and baseboard stock without needing to reposition the material mid-cut.

The XPS Cross Cut Positioning System is consistently highlighted across published assessments as one of the DWS780’s standout features — by casting an accurate shadow of the blade onto the workpiece before the cut begins, it allows the operator to align the cut line precisely without needing to power on the blade first, a meaningful accuracy and safety improvement over simpler laser-guide systems that can require calibration and may drift out of alignment over time.

Build Quality & Stability

The dual horizontal steel rail configuration is confirmed in published specifications and consistently praised across independent reviews for the stability it provides during sliding cuts on wide stock — horizontal rail designs generally extend forward from the saw’s rear rather than requiring clearance behind the saw, which published assessments note can be a practical space-saving advantage when the saw is positioned against a wall or workbench backing. At approximately 56 pounds, the DWS780 has the mass needed for stable, accurate cuts, while remaining transportable between job sites with the aid of its carrying handles.

TechGearLab’s independent testing specifically praises the saw’s miter adjustment system, blade-changing process, and blade depth lock as refined and user-friendly relative to competing saws in its test group — meaningful ease-of-use advantages for a tool that professional users may adjust repeatedly throughout a workday.

Where It Falls Short

Research and published assessments identify legitimate limitations. Dust collection is consistently cited as the DWS780’s weakest attribute — Pro Tool Reviews specifically notes the dust collection system “could be improved,” and TechGearLab’s independent testing found average performance that improves significantly only when paired with a medium-power external vacuum rather than relying on the saw’s stock dust bag alone. At 56 pounds with a large sliding-rail footprint, published reviews note the DWS780 presents genuine storage and portability challenges for users with limited shop or garage space. Reddit community discussion also notes the DWS780 draws significant startup current (over 60 amps momentarily), a characteristic of large miter saw motors generally that may require attention to circuit capacity and extension cord gauge. Some published community discussion describes the blade-changing process as more involved than ideal, a partial contrast to TechGearLab’s more favorable assessment — suggesting some variability in individual experience with this specific task.

Value Assessment

At a list price around $600 but frequently available closer to $400, the DEWALT DWS780 delivers professional-grade miter saw performance that independent testing organizations consistently rank at or near the top of the category. Its wide combined miter and bevel range, the genuinely useful XPS shadow-line positioning system, and dual horizontal rail stability combine to make it a versatile, accurate tool suited to professional trim carpentry, framing, and serious hobbyist woodworking. Research and published assessments consistently support the DWS780 as one of the best 12-inch sliding compound miter saws available, with dust collection and storage footprint as the primary tradeoffs to weigh against its exceptional cutting versatility and accuracy.

This review is based on published manufacturer specifications, independent published data, and analysis of verified owner feedback from professional trade publications and woodworking communities. See our How We Review page for full methodology. Some links in this review are affiliate links.