How to Slow Down Miter Saw Motors?

Last Updated on July 26, 2022

If your miter saw is running too fast, it can be a real problem. You might end up with uneven cuts, or worse, you could damage the material you’re working on.

There are a few things you can do to slow down the motor on your miter saw. In this article, we will cover the basics of how to slow down miter saw motors safely and effectively.

Maintenance of miter saw

Performing routine maintenance on your miter saw will increase its lifespan and prevent it from breaking down. This is especially important if you regularly put material near the blade or use it in high-stress applications. Replace worn-out parts regularly to ensure safety and proper operation.

Listed below are some tips to keep in mind when performing maintenance on your miter saw. Continue reading to learn how to maintain your saw. After performing these maintenance steps, your miter saw should be operating as well as it did when you bought it.

Check the bevel adjustment knob on your miter saw. This is found on the back or side of the saw. It allows the blade to tilt left or right.

Some miter saws have a double-bevel adjustment mechanism so that you can adjust the bevel angle both left and right. Make sure to lower the blade to the material you’re cutting so that the blade will be positioned in the proper bevel.

Clean the blades of your miter saw regularly. Ensure they are sharp and lubricated. Also, clean the brushes and the kerf board. Replace them if they are dirty or worn.

If your miter saw isn’t equipped with these features, you can buy an inexpensive version. Check for dust ports in the blade guard to ensure a clean workspace. Lastly, always engage the trigger lock on your saw.

Wear and tear of motor

If your miter saw is slowing down while cutting wood, the problem is likely caused by worn out brushes. Brushes are engineered to last for several years.

However, if your saw starts making grinding noises during woodworking, it is a sign that something is wrong. To diagnose the issue, check the brushes, bearings, and armature. Replace any damaged parts with new ones.

Another cause of slowing down is a worn-out motor. While the motor brushes may be fine, internal failure can cause the motor to overheat, causing the blade to spin very slowly.

If this happens, replace the motor. You can try cleaning your saw blade with alcohol before replacing the brushes. If this does not help, check the brushes for signs of damage. If the saw is still slowing down, you can replace the brush.

If the motor is causing the miter saw to slow down, you might be using an extension cord with low house current. In this case, you should contact the electric company and see if they can help.

Lastly, try using an adjustable stand. This will help you to keep the miter saw steady. Using a stand that is too low will cause the blade to skip a cut.

Replacement of brushes

A bad set of brushes can significantly decrease the speed of your miter saw. Carbon brushes, found in the motor of an electric miter saw, are responsible for transferring electricity from the commutator to the armature.

These brushes can become damaged or worn over time, resulting in intermittent power delivery. Replace your brushes, as they can easily be replaced with a screwdriver.

By performing this simple maintenance, you can restore your saw’s power and revitalize it. A quick and easy maintenance job will save you hundreds of dollars on replacement tools.

Keeping the miter saw brushes clean is essential to prolong its life. A poorly maintained miter saw can cause it to run slowly or stop completely. It is important to keep your saw clean by replacing the brushes as needed.

You can find them beneath the motor casing, attached to springs. Make sure you purchase the right-size brushes for your saw. They should be about one-eighth-inch long and have pitted or rough edges. The contact points on the brushes should match their curvature.

Another common cause of a slow-running miter saw is a bad motor brush. This can cause excess heat to be produced by the saw’s blade, and this can lead to overheating.

If you’ve been putting material near the blade without replacing it, you may be putting it off too long. Besides, you’re more likely to start seeing sparks in the near future.

Setting up an extension fence

Setting up an extension fence

In order to set up an extension fence for your miter saw, you should have a straight piece of wood. This will help you cut the pieces accurately and safely. If you bend the fence, it can cause the blade to kick out or bind.

There are two types of fences: two-piece and continuous. If you’re using a continuous fence, you’ll need to lay the straight edge of the board across the fence and loosen the screws. The two-piece fence is also easily straightened once you’ve set the miter.

Before you start cutting, you should consider setting up an extension fence that you can remove after the cut is complete. If you don’t have one, you can make a temporary one from a board that you’ve already cut.

Make sure to drill holes in the extension fence so that you can reuse it for future projects. The screw holes will get worn over time. Also, if you cut the board too deeply, your cut will be less than 90 degrees. This can result in a wobbly table and joints that won’t line up.

Another way to set up an extension fence to slow down miter cut is to put a thin piece of plywood or MDF over the table. This will help you cut against the blade rotation and prevent it from grabbing the piece of wood as you work.

Never use the free-hand technique, as it can be dangerous and inaccurate. Once you’ve done this, make sure that you secure the five-point check on the saw. The five-point check should include the carriage, power plant, and table height, tilt, and quill.

Also, make sure that you have an upper guard and never try to reach over the blade while it is running. Always use a companion when working with large sheets of wood.

Using a stop block

There are three basic ways to use a stop block: by clamping it to the fence, using a zero clearance slot, or by using an extension board.

The former is easiest to use and requires no track or fancy set-up. Beginner woodworkers will appreciate this option. The latter can be used for large groups of cuts or when a piece of wood is too thick to be cut in half.

The use of a stop block will prevent the blade from flexing and cutting outside the line, which results in a slightly shorter board. The other method involves pressing the board up against the blade to raise the blade.

This will result in just enough cut off the board. For one-off cuts, using a stop block is not necessary. Instead, measure the length of the board, and take into consideration the thickness of the blade.

Using a stop block will prevent kickback, a phenomenon where a spinning blade propels a small piece of wood towards the user. The stop block will prevent kickback, which can be very frustrating if you’re cutting a wide board.

It will also prevent you from accidentally cutting the wrong piece, meaning two cuts will be parallel. If you need to stop the miter saw in the middle of a cut, you’ll need a stop block that prevents the blade from moving.

Operating a miter saw with your left hand

You should be careful when operating a miter saw. Never operate the saw with your hands in the path of the blade. Always use safety glasses and do not reach under the blade when it is plugged in.

Be sure to secure the material before cutting it with clamps. When finished cutting, unplug the saw. Do not operate the miter saw if it is still plugged in.

While operating a miter saw, make sure to place the board flush against the back fence of the saw. Use the miter gauge handle located on the front of the saw to adjust the blade to the desired angle.

After setting the desired angle, check the spot where the blade meets the wood. If necessary, adjust the board. If it is pushed too far, clamp it six inches from the blade.

When operating a miter saw, make sure the blade is not too wide. If you do not allow the blade to reach its maximum width, you can risk damaging your finger.

Always use a miter saw guard to protect your hands. Using a miter saw guard will protect you from getting injured by the blade. If you have a right hand miter saw, the blade guard will be covered in wood dust.

Frequently Asked Questions (FAQs)

What are some ways to slow down a miter saw?

Some ways to slow down a miter saw are to use a lower speed setting, use a smaller blade, or use a blade with more teeth.

How do you adjust the speed on a miter saw?

The speed of a miter saw can be adjusted by changing the blade. A higher number blade will rotate faster and cut through the material more quickly, while a lower number blade will rotate more slowly and be better suited for cutting thicker or harder materials.

What are the benefits of slowing down a miter saw?

Some benefits of slowing down a miter saw include reducing the amount of tear-out on the workpiece, getting a cleaner, more accurate cut, and reducing the amount of noise generated by the saw.


One way to slow down a miter saw is to use a lower speed setting. Another way to slow down the blade is to use a blade with fewer teeth.

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