Power Tools — FAQ
What's the real difference between DEWALT DWS780 and DWS779?
Identical motors, capacity, and rails—the DWS780 adds the XPS LED shadow line system. If you trust your own marking skills, save money with the DWS779. For production trim work, the XPS pays for itself in speed and accuracy.
Do professional carpenters really need a sliding miter saw?
For framing and deck building, absolutely. The 12-16 inch crosscut capacity handles LVL beams and wide fascia boards that fixed saws can't touch. For strictly trim work, a fixed 12-inch saw suffices and saves weight.
Is a cordless miter saw powerful enough for professional use?
The DEWALT 20V MAX handles trim and light framing but bogs down in dense material. Keep it for punch lists and finish work. For heavy daily cutting, stick with 15-amp corded models that never quit.
Single bevel vs double bevel: which should I buy?
Double bevel saves time on crown and complex trim by eliminating workpiece flips. Single bevel costs less and teaches better fundamentals to apprentices. If you cut crown daily, double bevel is worth every penny.
How important are laser guides and shadow line systems?
Shadow line systems like XPS are game-changers—they show the actual blade kerf and never need calibration. Traditional lasers drift and require constant adjustment. For pros, shadow line is the only way to fly.
What blade size is best for professional work?
Twelve-inch saws cut deeper and wider, essential for large crown and 4x material. Ten-inch blades cost less and spin faster for cleaner trim cuts. Most pro crews eventually own both for different tasks.
