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The DEWALT DWA1856 3-1/2-inch 2X Long Life hole saw cuts 2-by material in one pass, with a bi-metal edge and improved plug ejection for clean, fast holes.
Pair withDEWALT DWA1860 3-3/4-Inch Bi-Metal Deep Cut Hole Saw$10.00
Categories : tools
SKU : WOR-TOO-962
The DEWALT DWA1856 3-1/2-Inch 2X Long Life Hole Saw is built for contractors and DIYers who need clean round holes in wood, drywall, and metal without changing blades constantly. Its bi-metal construction includes up to 8.75% cobalt, which helps the cutting edge stay sharp longer than standard hole saws. The deep-cut design slices through 2-by material in a single pass, and the improved plug ejection system pops waste out so you can keep moving.
This hole saw is part of DEWALT's 2X Long Life family, and its double-tooth design strengthens each tooth to reduce breakage. The staggered slots on the side make it easier to remove material plugs, especially in wood. The 3-1/2-inch diameter is a common size for door latch installations, electrical conduit, and plumbing pass-throughs.
The DWA1856 does not include an arbor. Pair it with a DEWALT hole saw arbor, such as the DWAR50, for hassle-free mounting on any drill. Make sure the pilot bit is properly seated and the arbor is tightened before starting.
Bi-metal with up to 8.75% cobalt for longer edge life and faster cuts.
Deep-cut design slices through 2-by material in one pass.
Staggered slot pattern helps pop out material plugs easily.
Double-tooth geometry strengthens each tooth and improves durability.
Fits standard 1/2-inch hole saw arbors.
Size: 3-1/2 in (88.9 mm)
Arbor: Sold separately; fits standard 1/2-in arbors
Depth: Deep cut (cuts 2-by in one pass)
Model: DWA1856
Material: Bi-metal with up to 8.75% cobalt
Product Type: Hole Saw
Tooth Design: Double-tooth geometry
Plug Ejection: Staggered slots for easy removal
Seller: Workbench World
MPN: DWA1856
Whether you're installing a door latch, running wire, or cutting clean openings, a hole saw only works well when the setup is right.
Use a 1/2-inch arbor with a pilot bit that matches the guide hole. The pilot bit keeps the saw centered, so make sure it's sharp and tightly seated.
For wood, run a 3-1/2-inch bit at 300-500 RPM for clean cuts. For metal, slow down to 100-200 RPM and apply cutting oil. Let the saw self-feed; don't push hard.
The staggered slots allow you to push the plug out from behind or use a screwdriver. Removing the plug right away prevents overheating and keeps the saw cutting fast.
No, the arbor is sold separately. It fits standard 1/2-inch hole saw arbors with a pilot bit.
Yes, the bi-metal edge is designed for wood, metal, and drywall. Use cutting oil and run the drill at a moderate speed for metal.
The 2X Long Life design resists dulling significantly longer than standard hole saws. Exact hole count depends on material, speed, and pressure.
Yes, the deep-cut shape is sized for 2-by material, so it can cut completely through a 1-1/2-inch thick board in one pass with a suitable drill.
I've been framing for thirty years and I've used every hole saw that comes along. This DEWALT DWA1856 cuts through 2x material in one pass, just like it says. The plug ejection actually works, so I'm not prying out stuck wood every five minutes. It's a bit pricey, but when you're running a crew, time is money. I'll be picking up another one for my apprentice.
It cuts well and the holes are clean. The only issue is the size—it's a 3-1/2, so it's big. I needed a smaller one for my project, but it did the job.
Cuts like a dream.
Used it to drill through some studs. It worked fine. No complaints.
I'm a DIYer and I was nervous about cutting a hole for a vent. This saw made it so easy. The teeth are sharp and the plug popped right out. It took me less than a minute to get a perfect circle. I'm honestly impressed with how smooth the edge is. Definitely recommend it for anyone doing home projects.
Cuts through 2x6 like butter. No vibration. Good buy.
I used it with my drill to make holes for a birdhouse. It got the job done, but the saw is pretty heavy and took a while to get started. I think it's better for larger projects. Overall fine.
The saw took a while to cut through a 2x4. I expected it to slice right through. It's okay, but I've had better.
Perfect holes every time.
I've used this on several jobs now. It cuts accurately and the ejected plug is a nice feature. The teeth seem to stay sharp longer than other brands I've tried. It's a solid tool for framing and electrical work. I'd definitely buy it again.
It cut the hole I needed, but it's tough to handle for a small person. The saw is strong, so it works well once you get it going.
I've owned many hole saws over the years and this one is the best. It doesn't bind up and the cuts are clean. The plug comes out automatically, which saves time. I use it for electrical boxes and it's worth every penny.
It worked for one hole, but then it dulled quickly. Maybe I got a bad one, but I expected more from DEWALT.
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Address: 4820 Industrial Parkway, Cleveland, OH 44135, United States