Choosing The Correct Diamond Blade

30/11/-0001 Post By: George H
Choosing The Correct Diamond Blade

Choosing the correct Diamond Blade

There are many factors to consider when selecting the right diamond blade for the job. There are a number of blades that claim to carry out the same job as each other, and you might be confused by that. Some will claim to specifically cut brick, for example and others will claim to cut brick as well as other materials such as concrete. So, which is the best for cutting brick? The things to consider when choosing your Diamond blade are the material you are cutting, the equipment you are using, how deep you want the cut to be, whether you’re going to perform a wet or dry cut and deciding whether you want an enhanced life blade or a blade with a faster cut.


The first stage of choosing a Diamond Blade is knowing what material(s) you are going to be cutting. There’s no point buying a blade designed for cutting ceramics when you’re going to be cutting something like class A engineering brick. We list all of our Diamond Blades clearly stating the materials that they are designed to cut, but if for some reason that’s not enough; manufacturers have their own guides that help you identify what blade is best suited for certain materials.


The next thing to consider is what equipment you will be using the Diamond Blade with. It’s no good buying a 350mm Diamond Blade if you’re going to be using an angle grinder, because it just won’t fit let alone cut. You need to make sure the bore size of the Diamond Blade is the same as the fitting on your tool. This is so the blade is secured and installed onto the tool properly. There’s also power to consider. Is your equipment going to cut at 1000rpm when using a Diamond Blade best suited to 8000rpm? Similarly, if you have a blade that’s suited for 4000rpm, there’s no point using a tool at 12000rpm.

Depth of cut

How deep are you going to be cutting? The diameter of the blade and the tool you are using both influence how deep you can cut the material. Obviously, the larger the diameter the deeper you can cut; however, when it comes to a tool such as an angle grinder you can only cut as far as the blade comes out of the tool. For example, if you have a 5-inch angle grinder, the blade will extend by 2.5 inches, and you’ll only be able to have a cut 2.5 inches deep.

Wet or dry

Some blades are designed to only be used in wet conditions and vice versa. If you use a wet blade in dry conditions, then it won’t perform up to standard and it will most likely overheat, crack or shatter. A dry blade’s performance is based on the airflow around the blade when it’s in use. They can have their own ventilation which will prevent an overhaul of heat, but they still need cooling. Wet blades require water to be cooled, which will prevent excessive heat. The water flow must be continuous and in a stream to ensure it is constantly receiving cool water. If you use a wet blade without water for even a few seconds, it will overheat resulting in a potential hazard.

Endurance or performance

What do you want out of your blade? Some blades are preferred for their speed of cut, whereas others are preferred because they last a very long time. The latter tend to cost more, but is it worth the extra money to get a blade that lasts longer? In my opinion, it will depend on what you’re using the blade for and how much cutting you have to do. I’d also consider whether you’re likely to use the blade again after your project. It all comes down to the cost per cut, which does depend on the length and depth of cut as a deeper and longer cut will cost more, in theory. If you’ve got a smaller job, and you know you only need to perform a small number of cuts then you should opt for the blade with a higher performance. If you’ve got a big job, it will be more cost effective to purchase the blade with a longer life. You wouldn’t have to swap the blade half way through. A single blade costing £300 will cost less than buying 3 blades at £120 each for the same job.

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