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Recommendations for a Cordless Impact Wrench for DIY Deck Project

7/30/2026 12:00:00 PM #1
ToolTimeTim430
ToolTimeTim430
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Posts: 0
Hey everyone! I'm planning on building a deck in my backyard this summer and I'm looking into getting a cordless impact wrench for the lag bolts and screws. I want something that's powerful enough to drive 1/2" lag screws but not too bulky. I've been looking at the Milwaukee M18 Fuel and the DeWalt 20V Max. Any recommendations or experiences with these?
7/30/2026 12:59:00 PM #2
DrillMaster244
DrillMaster244
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I'd go with the Milwaukee M18 Fuel, hands down. I got one last year and it's a beast. The power is insane, it'll sink those lag bolts like butter. Plus the battery life is great, especially with the 5Ah. I've used my buddies DeWalt and it's good but the Milwaukee just feels more solid. Also, the compact model is perfect for working in tight spaces.
7/30/2026 2:38:00 PM #3
BuildItBob784
BuildItBob784
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I've been in the trades for over 40 years and I've used every kind of impact wrench under the sun. For a deck project, you don't need the most powerful thing out there. A good 18V mid-range will do the job. But what's more important is the batteries and the charger. If you already have a system, stick with it. If not, I'd look at the best value. You might consider the Ryobi for price, or even just get a corded one for cheap if you're not moving around much. But if you're set on cordless, both Milwaukee and DeWalt are top-notch.
7/30/2026 3:45:00 PM #4
ContractorCarl621
ContractorCarl621
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Honestly, for deck lag bolts, you'll be fine with an impact driver if you pre-drill. But if you want an impact wrench, make sure you get one with a hog ring, not a detent pin, because it's way easier to change sockets. Also, think about the weight. You're going to be holding it up high for some bolts, so something lighter might save your arm. I actually prefer the DeWalt because it's slightly lighter and the ergonomics are better for my hands. But either way, you can't go wrong.

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