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Blade Grinder - Why You Shouldn't Use One

A blade grinder employs an e-type propeller (think blenders) to chop coffee beans. They are much cheaper than burr grinders, and are easy to clean but they don't yield uniform grounds and can lead to over-extraction and bitterness in your coffee.

A top-quality coffee experience requires uniform distribution of particles which is only possible with the burr grinder. It's no wonder coffee experts hate burr grinders.

Inconsistent Grinds

If you've used a grinder with a blade for some time it is likely that your grinding results have become inconsistent. This is because the machine has probably become worn out and dull. As the grinder wears out it will cut beans into different sizes. This can lead to different levels of coarseness. It's challenging for your coffee maker to extract an even, balanced flavor with these different-sized particles.

A blade grinder cuts beans by rotating a blade that looks like a propeller. It cuts the beans into smaller and smaller pieces which are then put into a catcher via the screen. Although this method is effective but it's not ideal for producing the best grind for your drink. An alternative is a burr grinder. A burr grinder has an efficient motor that has two grinding burrs and is a much larger machine. The burrs are set at a certain distance apart which determines the coarseness of the coffee being ground.

If the burrs are too close to each other, they will crush the beans, rather than cutting them. As a result, the resultant grounds are less coarse and more fine. They also tend to be soft, which can adversely impact the taste of your coffee. If the burrs, however, are too far apart they will result in large chunks of coffee that are coarsely ground. It is crucial to select the coffee grinder with an adjustment that is in line with the level of coarseness you want.

A sharp, well-adjusted blade will result in a consistent and fine grind for your coffee. If you notice your grind is becoming more uneven, it's a good idea to replace the blade or burrs. It is also advisable to change the grind setting if you haven't done so already, as this will allow you to achieve a more uniform grind.

It's also worth mentioning that if your grinder creates clumped up grounds this could be a sign of worn-out or damaged blades. The clumping occurs when small particles adhere to each other and larger pieces of ground are formed, producing larger granules that don't dissolve in water. This will happen more often as your burrs get duller.

Uneven Extraction

No matter if you're using drip, French press, or pour-over the size of your ground plays an important role in flavor extraction. Uneven sizes of the grounds can result in uneven extraction and an unbalanced cup of coffee.

As the beans move through a blade grinder they are cut and shredded indiscriminately resulting in an uneven distribution of the grind particle sizes. A blade grinder can create a mixture of large fragments that are dust-sized, as well as everything else. These different grind sizes are extracted at different rates, resulting in an inconsistent and often bitter cup of coffee.

In addition, the lack of uniformity causes problems with tamping and filtration. With a burr mill, you can achieve an even particle size allowing for more even tamping and filtration that prevents over-extraction and weak beers. With a blade grinder, it is more difficult to get an even grind and you may encounter tamping that is inconsistent from side to side or using the Stockfleth method (which takes some time to master).

The high speed and heat generated by blade grinders is another issue. They can cause the ground to burn and create a bitter taste. Burr grinders are much cooler and don't generate as much heat, which helps preserve the flavors of the bean.

The blade grinder has one final disadvantage: it is very easy to grind your beans to a fine. Keeping the grinder running continuously produces a lot of heat, and eventually causes your beans to be excessively extracted, which can result in bitter beverages. To avoid this, always pause your grinder before turning it on again.

A blade grinder is a convenient and cost-effective method of grinding your own industrial coffee grinder at home, but it's not the best option for those serious about their coffee-making. You should stick to whole beans and a burr grinder to get the best results. Invest in a quality coffee grinder that meets all your needs.

We've compiled a list of our top picks of best burr mills on the market if you're looking to upgrade your blade grinder. Choosing the right type of grinder is an important choice that will impact your brewing and overall cup quality so consider your budget, space, and your preferred method of brewing when making your decision.

Burned Grounds

Blade grinders use a sharp blade to grind the beans. The blade rotates at high speeds, like a blender. When the blade spins at a fast speed there is a lot of heat produced that can cause a fire to the grounds of Compact Coffee Grinder. These particles will ruin the taste of your coffee and aren't ideal to brew.

A top-quality coffee experience requires uniform distribution of the particles for the best flavor extraction during the brewing process. This consistency is impossible using a blade grinder, which breaks the beans up into large and small pieces. A burr mill, on the contrary, produces a uniform distribution of particle sizes that can be reproduced across a variety of beverages.

Blade grinders coffee beans have many advantages, including their low cost and speedy operation. However, they also have some drawbacks like the fact that they produce heat when in use, produce inconsistent grind sizes and are not able to control the final particle size. There are ways to improve the results with this type of grinder, despite its inherent limitations.

When using a burr mill, the user can easily adjust their desired ground size by adjusting the gap between the discs. This allows them extract the desired flavours every time they drink their favorite roasted bean. However, making a great brew with a blade grinder is a process that requires a lot trial and error.

An angle grinder is a potent tool that should only be used only by trained professionals. It can cause grinding burn if used incorrectly. This can cause localized changes to the surface of the metallographic material. This could lead to cracks that, if not addressed, can eventually result in macropitting and tooth fracture.

Grinding burn is a serious problem that can be caused by a variety of reasons, including excessive grinding pressure, inadequate cooling, or inadequate training for operators. Wear the proper safety equipment when working with an angle grinder. This includes safety glasses as well as a face shield and steel toe boots. This will prevent hot sparks from flying out of the wheel and striking nearby equipment or people. Sparks can be capable of reaching temperatures as high 3,600 degF, and can burn through materials like paint or even metal.

Brew that is not what you expected.

A blade grinder can chop your beans up indiscriminately and result in different-sized beans. This uneven ground extracts at different rates, which results in the cup being bitter or weak of coffee. The problem with this is that it destroys the balance that makes a great cup of coffee. The soluble compounds in the beans are extracted over time, resulting in the flavor that makes your coffee scrumptious.

You've probably heard that using a brewing burr grinder instead of a blade grinder is the best way to ensure the best drink. Many people don't even know what a burr grinder does. They purchase the flimsy blade grinders that are uncontrollable and difficult to control they can buy at supermarkets and places like kitchens.

The grinders that are available for sale are essentially a two-pronged blade that is located at the bottom of an enclosed chamber. It spins quickly and chops anything it touches, including your beans. The blade is activated by pressing the button. It then chops coffee beans into various sized pieces. Small pieces drop to the bottom of the chamber and are chopped again, while the larger pieces remain at the top. This makes for uneven grounds that are difficult to measure accurately - which is why you aren't certain of the amount of ground coffee your grinder made.

These grinders can also cause burns to your beans and ruin the coffee machines with grinder. The heat can also rob some of the flavor of your beans. This can leave you with a an unappetizing cup of coffee.

If you've been grinding your coffee yourself using a blade mill, it's time to upgrade to a more effective. A burr grinder will do the job for less than the cost and will give a superior result. It's well worth the investment. If you're looking to have more control over the brew try a manual burr grinder such as the Rhino hand grinder. These grinders are equipped with burrs however, they are powered by a crank. This gives you more control than an electrical or plug-in grinder.