How to change blades on a circular saw?

Circular saws are the unsung heroes of DIY crafting and woodworking. They can cut through a variety of materials, including plywood, hardwood, metal, and plastic. Nonetheless, the quality and condition of the circular saw blade greatly affects the effectiveness of these tools. The ability to quickly change circular saw blades is essential to improving your cutting skills.

In this article, BISON will walk you through the step-by-step process in this guide to ensure you understand the basic skill of how to replace a blade. Once you get it right on your first try, you'll be able to remove and replace it in minutes.

Why should you replace a circular saw blade?

Circular saws are versatile tools for home workshops and professional construction sites, relying on a blade to efficiently cut wood, metal, and other materials. However, over time and long-term use, the blades will dull and may become subject to wear, requiring sharpening or replacement of the blades in order to create precise, clean cuts for your tasks.

When should you replace a circular saw blade?

If your kerf tears increase, the wood starts to burn and the saw blade is having trouble cutting, it's time to replace it. Clean, precise cuts require a sharp knife, and a dull saw blade won't provide a fine cut.

Steps to replace a circular saw blade

Before you replace your circular saw blade, you need to make sure you gather all the items you need for the replacement process in advance. Here's a list of tools and safety equipment you'll need.

Tool list:

Wrench or allen key: Most circular saws come with a special wrench or Allen key that is used to loosen and tighten the blade retaining bolts or screws.

Screwdriver: A screwdriver can remove any part or cover that has access to the blade.

Blade lock or block: A blade lock tool (if provided with the saw) or a simple block is used to prevent the blade from turning when loosening or tightening the bolt.

New circular saw blade: A new saw blade that is compatible with your circular saw and conforms to the material you are cutting.

Stable workbench: Make sure the blade does not slip accidentally during installation.

safety equipment:

Safety goggles: Wear safety glasses to protect your eyes from flying debris or dust, which can pose a serious risk when changing blades.

Dust mask/respirator: If your work environment produces a lot of dust, a dust mask or respirator can help prevent the inhalation of harmful particles and keep your respiratory system healthy.

Heavy duty gloves: Wearing gloves will protect your hands from the sharp edges of old and new blades as well as any friction or sparks that may occur during disassembly. Gloves provide a secure grip on the tool and provide necessary hand protection.

Ear protection: It is recommended to use covered tools to protect ears during test sawing, circular saws are very loud to prevent noise damage to hearing.

Personal protective equipment (PPE) is the first line of defense when replacing a circular saw blade. It is crucial to use the right gear to protect yourself from potential dangers. Changing the blade on your circular saw becomes a simple task when you have the right tools and protective gear, so get started!

#Step 1: Understand the status and basic information of your circular saw

Power off: Make sure the circular saw is unplugged from any power source or, for battery-powered circular saws, remove the battery. Prevents accidental starting while working on the saw.

Additionally, you will need to find a blade wrench and a blade lock. Check the handle, base, and motor housing of most circular saws, as these are where the wrench typically attaches to the board. If you can't see it, refer to your circular saw's owner's manual. Manufacturers often provide complete safety guidelines and recommendations for their products. This will make changing the circular saw blade much easier.

#Step 2: Press the blade lock

The blade lock is usually located on the motor housing beneath the blade guard. Turn the blade while pressing it down until you feel the locking button click into place, preventing further rotation.

Pro tip: Many people find that locking the depth at the lowest setting makes it easier to remove the circular saw blade so the shoe (base) doesn't wear out. If you are replacing a circular saw blade while it is mounted on a work surface or sawhorse, make sure the workpiece is securely clamped or attached. This avoids unintentional movement that could result in contact with the blade.

#Step 3: Loosen the spindle bolts

Place the wrench around the spindle bolt (middle of the blade) while holding down the blade lock button. After loosening the bolt half a turn with a wrench, you can manually tighten the bolt and release the blade lock.

#Step 4: Rotate the blade guard and remove the blade and flange

The hard part is over. Now, all you have to do is unscrew the blade guard, lift the blade, and pull it out. Use caution when removing the old blade or installing a new blade. Avoid contact with sharp teeth and always treat the blade with respect. Even dull blades can cause injury if not handled properly.

In addition to the blade, there will be an additional element. Spindle bolts secure the outer flange to the blade, providing stronger retention than bolts alone.

#Step 5: Use the right side of the blade

To install a circular saw blade, we reverse the process of removing the circular saw blade. The key here is to remember the direction of the blade - it's not always with the print side!

The teeth on a circular saw move up in the material, not down. Regardless of the orientation of the saw, the teeth closest to the front always point upward.

Most circular saws have an arrow on the guard or blade cover to help you remember which way the blade rotates.

#Step 6: Open the blade guard and install the blade and flange

Open and rotate the guard, slide the blade onto the spindle, install the outer flange, and hand-tighten the spindle bolts. You can resume operation by pressing the blade lock button, rotating the blade until the lock stops, and tightening the bolt with a wrench. Engaging this lock prevents the blade from rotating while working. Then it’s time to start testing the circular saw!

#Step 7: Test that the circular saw is working properly

Reconnect the circular saw to the power source, start the circular saw and watch the blade. If there is no abnormal swing or vibration, the installation is correct. Then try it on scrap wood. If you hear any strange vibrations or noises, this may indicate a problem with the blade installation.

Note: If you notice any issues during your test cut, power down the saw and make adjustments as necessary, whether that's tightening the nut slightly or realigning the blade.

Quick steps to replacing a saw blade

• Turn open the blade guard.

• Slide on the blade.

• Install the outer flange.

• Press in the blade lock.

• Tighten the spindle bolt.

Replacing a circular saw blade may seem daunting, but with the right information and safety precautions, it becomes easier. Think safety first, choose the right blade, and follow these guidelines to keep your circular saw in good condition. Knowing how to change a circular saw blade will set you apart from the competition, whether you're carving intricate wood or doing home improvement work.

In conclusion

In this article, we take an in-depth look at the key steps to replacing a circular saw blade to ensure the longevity and safety of your circular saw.

Circular saw blades must be replaced regularly. By following the step-by-step process outlined in this guide, you can safely disconnect the power, remove the old blade, and install the new blade.

As a manufacturer specializing in circular saws, BISON offers high-quality circular saws and accessories that reduce wear and tear, minimize your maintenance workload, and ensure you spend more time working on your projects and less on your tools Maintenance. Click our website now to view more product series or contact BISON to discuss exclusive customization services.