How to sharpen table saw blades

If you ask professionals, everyone will tell you the same thing – if you want the best results, your tools need to be in top condition, always, especially cutting tools. They need to be sharp, clean, and fully operational, to ensure that the final result of your work is top-notch with the highest possible security, to avoid injury at work. In this particular case, we are talking about table saw and its sharpening. When it becomes dull, your work will be ruined – it will give you rougher finish plus it will overload the engine, the motor will work harder, and at the end, it can burn out. Not to mention that it can be dangerous, because if you work with the table saw in that condition, you risk that the saw chop the piece of wood which can fly in your direction and hurt you. That can cost you a lot of nerves and money, that’s why investment in sharpening saw can save you money in the long run, keep you safe and at the same time, you will keep your work results on the highest possible level.

There are several types of blades for a table saw. Usually, they are made of stainless steel and carbide. The blades made of stainless steel are cheaper, and usually, they do not sharpen. They come in packs of 2-4 blades, and they cost around $20. Usually, they are not worth sharpening because you can just take another one. The carbide blades are more expensive (from $40 and more), but they are more quality, and they tend to last much longer. They are also made of steel but with one very important difference – the tips of their teeth are made from carbide, for more precise cuts and durability. You can use a hand file, stone for sharpening, or automatic sharpener if you’re going to sharpen blades yourself. The automatic sharpeners will get the job done faster, but they can also be rough on the blade’s teeth. They can overheat or lose the correct angle of the teeth they are sharpening and finally, to damage them. Although it requires more of your time and effort, manually sharpening will produce much better results. So, let’s see how it works!

Examining the old blade

Before you start with sharpening blades of your table saw, you need to check how dull or are they dull at all. Look at the type of cut that you are getting from your blades. If the wood has burn marks or the other imperfections, then the blade probably burning the wood as it’s sitting there too long and not cutting correctly. In some cases, there may be other problems if the wood is burnt, but probably it’s a dull blade. Don’t risk your safety or ruining a project with a dull blade.

Preparation for sharpening

You need to do a full preparation for this process. Before you start with the sharpening, you will need a diamond blade and protection equipment. The gloves and goggles are mandatory, but even a protection mask would be nice to have because you can risk inhaling small pieces of metal during the sharpening process, as well as earphones. After all, the whole process is very loud. Once your safety measures are in place, get a setup. Replace the table saw blade with a diamond blade, and take care while doing so to avoid injuries. Take the blade that needs sharpening and places it next to the diamond blade. You need to sharpen the inside of the tooth and touch it up briefly against the diamond blad and so make sure that the diamond blade is in place.

Sharpening the blade

Now, it’s time to sharpen the saw blade. Turn on the table saw turning the first tooth up against your diamond blade. Touch the tooth briefly against the diamond blade and then pull back, putting the next tooth next for sharpening. Continue doing this until you cover all the teeth. The process is a difficult one, and so you do not need a hurry. If you do not want to use a diamond blade to sharpen, you can alternatively use a sharpening file and start sharpening sections of the saw. Do this with the use of full-back and forth strokes across the blade section. Rotate your blade and continue sharpening until you feel that the blade is sharp enough. Now that your blades are very sharp, that does not mean that they will never go dull again. That’s why you need to keep them sharp and away from rust, and the best way to do that is to lubricate them. Since you just sharpened your blades, you don’t have to use much oil. You just need to squeeze a tiny amount of lubricating oil on the entire blade, including the edges that you sharpen. After that, take a newspaper roll and use it to rub the oil into the blade. Spread the oil as much as possible, and don’t worry if you remove some of the oil in the process. Once you finish, replace the blade. And you’re done! Alternatively, you can always bring your blades to the professional sharpener who will do it for a small price, without mistake and your blades will be like a new. And as we said already, keep on your mind always – safety first! You need to know how to use a particular model of the table saw and how to be totally safe during its use. We recommend you carefully read the manufacturer manual and to read our other articles where you can find more useful pieces of advice how to use a table saw, and tips for maintenance, safety and use of the table saw, as well as the best offers of table saws on the market.

So, keep in mind, you need to maintain your tool so it can provide you the best performance, and you need to know how to be safe while using it.


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