Power Tool Buying Guide for Circular Saw

What Is a Circular Saw?

A circular saw is a go-to cutting tool found in just about every workshop, jobsite, or garage. It’s a handheld power saw that uses a rotating round blade to cut through wood, plastic, metal, and even masonry, depending on the blade. Circular saws are ideal for framing, decking, trimming, ripping plywood, and making quick, straight cuts. They're fast, efficient, and easy to control once you get the hang of it.

You’ll find both corded and cordless versions. Corded saws offer more consistent power and are better for long sessions or heavy-duty use. Cordless saws are all about portability and convenience—no cords to trip on, unplug, or accidentally cut through.

History of the Circular Saw

The circular saw dates back to the late 1700s, with the earliest known versions invented in England for lumber processing. Over time, the design was adapted into a handheld tool, and by the early 20th century, it became a jobsite staple. Skil was one of the first major manufacturers to popularize the portable circular saw, which is why some people still call any circular saw a “Skilsaw.” Today, nearly every major tool brand makes a version, each with their own tweaks and features.

What It’s Used For

Circular saws are all about straight cuts, fast, clean, and repeatable. Common uses include:

  • Framing lumber
  • Cutting plywood and sheet goods
  • Deck building
  • Trim and siding cuts
  • Ripping boards or cross-cutting stock

With the right blade, they can also handle metal, tile, and masonry, but most users stick with wood.

What to Look for When Buying

Here’s what matters when choosing a circular saw:

  1. 1
    Corded vs. Cordless: Corded gives you unlimited run time and more power. Cordless offers freedom and portability but eats through batteries fast on heavy cuts.
  2. 2
    Blade Size: The most common is 7 1/4". This size gives you deeper cuts and more blade options. Smaller saws (like 6 1/2") are lighter and easier to handle but cut shallower.
  3. 3
    Motor Type: In-line motors (sidewinders) are lighter and more compact. Worm drive motors give you more torque and deeper cuts, but they’re heavier.
  4. 4
    Electric Brake: Stops the blade within seconds of releasing the trigger. Safer and more efficient—worth making sure your saw has it.
  5. 5
    Bevel and Depth Adjustments: Look for smooth, tool-free adjustments. A wide bevel range lets you handle angled cuts with less hassle.
  6. 6
    Shaft Lock (Blade Lock): Makes blade changes quicker and safer.
  7. 7
    Ergonomics & Build Quality: A solid, well-balanced saw with a sturdy base plate makes cutting smoother and more accurate.

Pros and Cons

Pros

  • Fast, straight cuts through a variety of materials
  • Versatile for framing, deck work, and sheet goods
  • Cordless models offer jobsite flexibility
  • Corded models provide nonstop power
  • Tons of blade options for different tasks

Cons

  • Can be dangerous without proper technique
  • Cordless saws drain batteries quickly
  • Worm drive saws require occasional oiling
  • Not ideal for tight curves or intricate work
  • Can produce a lot of dust without a vacuum port

Blade Compatibility

Blades make the saw. Always use the right one for your job:

  • Framing blades (24 teeth) – good for rough cuts and fast ripping
  • Finish blades (60–80 teeth) – for smoother, cleaner cuts
  • Plywood blades – fine-tooth blades to reduce splintering
  • Masonry or tile blades – use abrasive or diamond-tipped blades for those jobs
  • Metal-cutting blades – made specifically for aluminum or thin steel

Blades dull fast when misused. Keep them sharp and swap them out when needed.

Safety and Maintenance Tip

  • Set your blade depth just below the material—about 1/4" more than needed
  • Clamp your work for stability
  • Check for nails, screws, or staples in the material
  • Let the blade reach full speed before cutting
  • Don’t force the saw, let it do the work
  • Always wait for the blade to stop spinning before setting the saw down
  • Keep your blade clean and sharp for safer, more efficient cuts

Who This Tool Is For

  • DIYers and homeowners who need to cut plywood, framing lumber, or decking
  • Contractors and pros in framing, remodeling, siding, or general carpentry
  • Anyone looking for a fast, reliable cutting tool for straight-line work
    The circular saw is a workhorse and belongs in any serious tool setup.

FAQ

Can a circular saw cut metal or tile?

Yes, with the right blade. Just keep in mind, cutting those materials will wear blades faster and may require safety gear like goggles and masks.

Is a worm drive better than an in-line circular saw?

Worm drives offer more torque and deeper cuts, but they’re heavier and require oil. In-line saws are lighter, cheaper, and fine for most people.

What’s better—corded or cordless?

Corded gives you full-time power. Cordless is more portable. If you’re doing long sessions or heavy cutting, stick with corded. For convenience and mobility, cordless works great.

Final Thoughts

A circular saw is one of the most practical and reliable tools you can own. It’s simple, powerful, and built to handle a wide range of cutting tasks. Whether you’re framing a wall, cutting down plywood, or just doing basic repairs, a good circular saw will save you time and frustration.

The key is choosing the right one for how you work, corded for more power and runtime, cordless for flexibility and convenience. Pay attention to blade size, ergonomics, and safety features like an electric brake and depth adjustment. If you invest in the right saw and keep it maintained, it’ll serve you well for years.