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How to safely use a circular saw

How to safely use a circular saw

Posted on March 15, 2019March 9, 2021 by Aaron Barnett
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Checked and updated on March 9, 2021 by Aaron Barnett

Author intro

Not knowing how to use a circular saw is what is holding most people back from having a go at doing some DIY or woodworking. This guide covers how to use an electric or cordless circular saw so you can make quick and easy cuts in wood instead of struggling by hand with a hand saw.

Be-aware: Circular saws can cause a serious injury used incorrectly, only do what you feel comfortable doing, have someone watch you that knows how to safely use one and knows about, kickback, RCDs, and how to position timber for cutting, read down below.

Table Of Contents show
Steps to safely use a circular saw
What circular saw to use?
Conclusion

Dangers to watch out for using a circular saw:

  • Kick back – This is when the tool blade jambs and the saw suddenly kick’s back, it’s something to always be prepared for.
  • Accidental cutting – Be careful to position yourself away from the blade and not swing the tool close to anyone after a cut.
  • Electric shock – Make sure to always use an RCD at the power source, avoid water contact, and don’t cut the lead.
  • Falling timber – Make sure that when you cut a large piece of timber that it will not fall in a dramatic way that could cause damage or injury.
  • Cutting direction – You can only cut wood with a circular saw in a straight line dong otherwise is dangerous and will jamb the blade.

Skill saw clamps and saftey gear

Steps to safely use a circular saw

1. Check and set up your circular saw

  • Use an RCD – When using any power tools an RCD can stop you from getting an electric shock. It’s important to remember that a surge protector is not an RCD.
  • Keep the lead away from the blade – Or better have a cordless circular saw if you don’t need the extra power.
  • Wear ear muffs – To protect your ears from the sound.
  • Check the safety guard – Check that the guard automatically retracts and springs back without catching.
  • Eye protection – Make sure to wear glasses to protect your eyes, especially when cutting man-made boards like particleboard.
  • Sharp blade – Make sure the blade is sharp and smooth cutting without resistance sharp blades are safer than blunt blades that require more force. if you need more information check out more on how to change a circular saw blade.
  • Gloves –  Means a bit more protection is added.
  • Set the blade depth – Set the appropriate blade depth so that the teeth just get through the timber your cutting. The more the blade extends down the more friction and resistance there is on the blade. 
  • Motor size – Make sure you don’t have a saw too much bigger than what’s needed, at the same time don’t have a saw that is under-powered and struggling to cut.

DSC 0207

2. Position your work comfortably

To reduce the likelihood of a kickback you need to position the wood you are cutting in a sturdy way.

  • Use clamps – To hold the wood your cutting firmly in place, this also means both your hands can be on the saw and not close to the blade.
  • Position for the cut – Position any timber being cut so that after cutting it will not fall in a dramatic way or jamb.
  • Cutting Plywood – When cutting a full sheet of plywood you can position it so it only falls 2 inches by setting up a good cutting bench.
  • Large Irwin quick grip clamps can secure your workpiece much more securely than your hand ever could. 

2 types of Irwin Clamps For Skill Saw

3. Position yourself safely

It’s important to position your body so that if kickback happens, the cutting blade will not touch you. Do this by always having the saw lower than your torso, even just of the ground is best. 

You have a better grip and more control holding the saw at a lower height, and the blade is further away from your torso and vital organs making it safer.

Imagine the saw going forward and backward, and position yourself so you are not in its path both in front or behind the blade incase kickback happens.

4. Have a good cutting technique

It’s important to hold on to the saw with two hands as much as possible and again to use good quality clamps to secure your work every time you cut.

With experience and for 4/2, you can use one hand on your work and one hand on your saw, tilt the timber on an angle downwards and use the weight of the saw to make the cut.

When cutting a large piece of timber and the offcut that will fall away would be large and heavy, note that this weight is going to be folding onto your saw blade and could cause a kickback. To get around this cut first 8 inches longer than your exact cut length but do it very quickly so the saw doesn’t have enough time to catch. Then make a second slow careful cut, when now the weight of the offcut isn’t enough to fold and jamb on the saw.

5. Diagnosis of overheating

A circular saw blade will wobble if it overheats; a saw blade could be overheating if the blade is not rated for the RMP of the saw. If you are doing a heavy amount of ripping (cutting timber along the grain) this could also overheat the blade.

Maybe a more powerful motor is needed for the work you are doing, or stop the tool for a rest and let it cool down if the blade is getting too hot.

What circular saw to use?

The smaller a circular saw motor (amps), the less power it has, and the easier it is to control for beginners. But if the saw is under-powered for the work you want to do, and the saw is struggling this can be a problem. You want to get a saw you can easily control and is also not underpowered for the job you want to do.

A small 1400-watt Makita or Milwaukee corded circular saw can be a good overall choice, but at a disadvantage when ripping heavy amounts of timber, although it’s better to use a portable table saw for ripping jobs instead.

A battery-powered circular saw is a safer option for small jobs, and even easier to control for beginners that want the better portability of a cordless Makita or Milwaukee 18v circular saw.

Milwaukee 2730 20 Circualr Saw

Conclusion

You can never be certain a kickback won’t happen but you can make it unlikely to happen by improving the technique and positioning of your work.

As you get more experience using a circular saw you can do more and more different types of cuts, and the building and woodworking world can start to open up to you.

If you haven’t got a saw yet and your a beginner I recommend getting a cordless saw first click here to read my review.

Aaron using a Makita cordless circular saw

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Builder and Editor at bangingtoolbox.com
Aaron Barnett

My name is Aaron, and welcome to Bangingtoolbox.

As a qualified builder and DIY’er, my goal with Banging Toolbox is to provide the #1 building and DIY resource on the internet for my readers.

I’m here to show people how to start DIY, and to help qualified professionals take building to the next level.

Feel free to have a look around, and don’t hesitate to ask me any questions, you can find out more about me here.

You may also like:

  • How to change a circular saw blade | And tips for recycling blades
  • How to find a real tool review online
  • Circular Saw vs Miter saw | When to use what?
  • Jigsaw vs circular saw | When to use what tool?
  • Miter saw or Table saw? | When to use each tool and the differences
  • How to cut a square hole in wood
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ROBERT TAVARES
ROBERT TAVARES
2 years ago

“skill saw”? pretty sure it’s “Skil saw”

Reply
bangingtoolbox
bangingtoolbox
2 years ago
Reply to  ROBERT TAVARES

Thanks Robert

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