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Help! Choosing the Right Grinder for My Deck Project

8/19/2026 10:00:00 AM #1
DIY_Dan_88
DIY_Dan_88
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Posts: 0
Hey folks! I'm planning to build a 12x16 deck in my backyard this spring, and I need to cut some pressure-treated lumber, maybe some composite too. I've got a circular saw but it's not great for long cuts or getting into tight corners. I'm thinking about getting an angle grinder with a cutting wheel. Any recommendations? Should I go corded or cordless? I want something reliable but not break the bank.
8/19/2026 10:26:00 AM #2
ContractorCarl928
ContractorCarl928
New Member
Posts: 0
Hey Dan! For deck work, an angle grinder is definitely handy, but you might also want to consider a circular saw with a good blade. BUT since you asked, for a grinder, I'd say go corded – more torque, no battery sag. I've used DeWalt and Makita, both solid. For cutting through PT lumber, get a metal-cutting wheel or a diamond blade if you're doing composite. Just be careful with kickback – always use two hands and a guard. And wear eye protection! What's your budget?
8/19/2026 10:44:00 AM #3
SawDustSteve997
SawDustSteve997
New Member
Posts: 0
I second the corded option for continuous use. I have a Bosch 4.5" grinder and it's been a workhorse for years. But if you go cordless, make sure you have spare batteries. For cutting deck boards, I actually prefer a circular saw – but for flush cuts or getting into corners, a grinder with a cut-off wheel is great. Also, don't forget about a grinder with a paddle switch – safer because you have to hold it to run. I've had a few close calls with trigger switches.
8/19/2026 1:12:00 PM #4
ContractorCarl710
ContractorCarl710
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Posts: 0
I'm a Makita guy through and through. My 4-1/2" corded grinder has been going strong for 15 years. Build quality is excellent. For a project like yours, you don't need something huge – just a solid 4.5" with a side handle. And get a brand you can get parts for easily. Also, think about a grinder with variable speed – helps when you're doing more than just cutting, like grinding down weld beads if you're doing metal work.

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