Deck building - rotary tool recommendations?

Hey folks, I'm about to build a 12x16 deck for my backyard. I've got a drill and circular saw, but I'm thinking about getting a rotary tool for cutting in tight spots and maybe some detail work on the rails. I've seen Dremel and some other brands. What would you recommend for a project like this? I don't want to break the bank but also don't want junk.

If you're gonna use it for a deck, you're gonna want something with a bit more power than a Dremel. I'd look at a die grinder with a rotary bit. But honestly, for a deck, you're better off with a jigsaw or oscillating multi-tool for cutting. The rotary tool is more for precision stuff like engraving or cleaning up metal. But if you insist, get a corded Dremel 4000, it's solid.

Yeah, what Carl said. For deck work, an oscillating multi-tool will be your best friend for cutting flush and getting into corners. I have the DeWalt one, it's a workhorse. For a rotary, I'd only use it for sanding in tight spots or maybe routing a small groove if you're doing fancy stuff. But if you're dead set, the Dremel 4300 is good, it has a bunch of accessories.

I'm more of a woodworker, and I agree, rotary tools are not ideal for structural deck work. But for rounding over edges on the rails, a rotary with a router bit can be handy. I have a cheap off-brand rotary that I use for that, works fine. Just remember to go slow and use the right speed. Also, wear eye protection, those bits can break.

I gotta chime in. If you want precision and durability, go with something corded. I've had my Dremel 4000 for years, still runs like a champ. But for a deck, I'd seriously consider a trim router instead. That'll do a lot more for you—rounding edges, making dados. You can get a decent trim router for not much more than a rotary. Just my two cents.