Building a cedar deck – need a rotary tool for the railing notches?

Hey all, I'm planning to build a 12x16 cedar deck next month. I need to cut some half-lap notches in the railing posts for the top rail. My circular saw can't reach deep enough. Would a Dremel 4300 with the plunge router attachment work, or should I rent a proper router? Budget is around $150. Any advice?

Don't waste your time with a Dremel for that. Cedar is soft but those notches need to be clean and accurate. Get a proper trim router like the DeWalt DW660 or Makita RT0701C. They're under $150 and will last you years. Use a spiral upcut bit for clean edge. Pro tip: clamp a straightedge and take light passes.

I've used a Dremel for similar work and it's a pain. Too much vibration, bits wander. Go with the DeWalt DW660; it's precise with the micro adjustment. Also, practice on scrap first. Nothing worse than a wobbly railing.

Whatever you choose, wear a dust mask and eye protection. Cedar dust is no joke. And if you use a router, secure that workpiece. I've seen kickback send a post flying. Stay safe, man.

I used a Dremel 4300 with the plunge base to cut notches for a pergola. Worked fine for me! But I took light passes and used a sharp carbide bit. Might be slower but cheaper if you already have the tool. Just don't expect it to plow through like a full router. Good luck!