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Blade Grinder - Why You Shouldn't Use One

Blade grinders have blades that look like a propeller (think blenders). They are used to chop compact Coffee grinder beans. They are less expensive than burr grinders and easy to clean but don't produce uniform ground and can cause excessive extraction and bitterness in your brew.

A top-quality coffee experience requires uniform distribution of particles and this can only be achieved by using a burr grinder. This is why coffee snobs hate them.

Inconsistent Grinds

You may have noticed that your grinding results aren't consistent if you've used a blade grinder over a long period of time. This is because the grinder has probably become dull and worn out. As the grinder ages it will produce different-sized pieces of beans. This can result in different levels of coarseness. It's difficult for your coffee brewer to extract the same, balanced taste with these various-sized particles.

Blade grinders use an e-rotating blade that resembles a propeller to break beans. It chops the beans up into smaller and smaller pieces which are then put into a catcher, which is then filtered through the screen. While this method works but it's not ideal for producing the best grind for your brew. Burr grinders are a better choice. A burr grinder is equipped with a powerful motor with two grinding burrs, and is a bigger machine. The burrs can be placed at a specific distance which determines the coarseness of the ground coffee.

When the burrs are too close to each other, they will crush the beans instead of cutting them. As a result, the resulting grounds are less coarse and more fine. They may also be brittle, which can affect the taste of your coffee. If the burrs on the other hand are too far apart they'll result in large chunks of coarsely ground coffee. It's crucial to choose a coffee grinder that has an appropriate setting to match the degree of coarseness you prefer.

A sharp, properly-adjusted blade will produce a consistent and fine grind for your coffee. If you notice that your grind is becoming increasingly uneven, it might be time to replace the burrs or the blade. If you haven't already done so, you should also change the grind setting to get more even grinding.

It's also important to note that if your machine produces ground that has clumped together it is an indication of worn or damaged blades. The clumping happens when small particles adhere to each other and larger pieces of ground, creating larger granules which don't dissolve in water. As your burrs grow and more dull it will occur more often.

Uneven Extraction

No matter if you're using drip, French press, or pour-over, the size of your grounds play an crucial role in preserving flavor. Uneven ground sizes cause uneven extraction, leading to an unbalanced cup of coffee.

The beans are cut into pieces and shredded in a random manner as they pass through the blade mill, resulting in an unbalanced distribution of the size of the grind particles. A blade grinder can produce a mixture of large pieces, dust-sized particles, and everything else in between. Different grind sizes produce at a different rate, resulting in the cup of coffee that is usually bitter and inconsistent.

Lack of uniformity can also result in problems with tamping and filtering. With a burr grinder, you can achieve an evenly ground particle size that allows for more even tamping and filtering that prevents over-extraction and weak brews. With a blade grinder it is more difficult to achieve an even grind, and you may encounter tamping that is inconsistent from side to side or using the Stockfleth method (which requires some practice).

The high speed and the heat produced by blade grinders are another problem. This can cause the ground to get burned and produce an bitter flavor. Burr grinders create less heat and are cooler, which preserves the flavor of the beans.

Another drawback of a blade grinder is that it's easy to over-grind your beans. The grinder can generate lots of heat, and, eventually, your beans will be over-extracted. This will cause a bitter brew. To avoid this, always stop your grinder prior to turning it back on.

A blade grinder is a convenient and inexpensive way to grind your coffee at home, but it's not the ideal option for those who are serious about their coffee-making. For the best results, you'll want to use a burr mill and whole beans. Make sure you invest in your coffee the brewing experience and invest in an efficient grinder that will meet every aspect of your espresso coffee grinder needs!

Take a look at our top choices of the best espresso grinder burr mills on the market if you're looking to upgrade your blade grinder. Choosing the right type of grinder is a major choice that will impact the brewing process and overall cup quality, so consider your budget, your space and your preferred method of brewing when making your choice.

Burned Grounds

With the blade grinder it's a sharp blade that spins like a blender at a rapid speed to break up the beans. The blade's speedy movement creates heat, which could burn some of the coffee grounds. These particles will ruin the flavor of your coffee and are not ideal to brew.

A premium coffee grinders experience demands a uniform particle distribution for the best flavor extraction during the brewing process. This is not possible with a blade grinder that breaks the beans into small and large pieces. A burr grinder however can ensure a uniform distribution of particles that can be replicated across a variety of different brews.

While the advantages of a blade grinder are its low price and fast execution, its main disadvantages are that it produces heat during use, produces inconsistencies in grind size, and is not able to control the final particle size. There are ways to improve the results using this kind of grinder despite its inherent limitations.

When used in conjunction with a burr grinder the user is able to easily adjust the gap between the grinding discs, allowing them to fine-tune the exact size of ground that they prefer. This lets them extract the desired flavours every time from their favourite roasted bean. It takes a lot of practice to make a good beverage using a blade grinder.

An angle grinder is a potent tool that should be used only by trained professionals. It can cause grinding burn if used incorrectly. This causes localized changes to the metallographic surface of the workpiece. This can cause cracks that, if left unchecked, can eventually result in macropitting and tooth fracture.

Grinding burn is a serious issue that can be caused by a variety of factors including excessive grinding pressure, inadequate cooling, or inadequate training for operators. If you intend to use an angle grinder, make sure you wear the appropriate PPE, including gloves with a face shield safety glasses, steel-toe boots and long sleeves. This will prevent hot sparks from flying out of the machine and hitting nearby equipment or people. Sparks can be capable of reaching temperatures as high as 3,600 degF, and can burn through materials like paint or metal.

Brew that is not what you expected.

A blade grinder chops up your beans indiscriminately and leaves you with beans that vary in size. This uneven ground extracts at different rates, leading to the cup being bitter or weak of coffee. The issue with this is that it ruins the balance that makes a great cup of coffee. The soluble compounds in your beans are extracted in time, and this creates the flavor that makes your coffee delicious.

You've probably heard that using a burr mill instead of blade mills is the best way for a great beverage. However, many people don't know how to use a burr mill or even what it does, so they buy one of the flimsy, uncontrollable, blade grinders that are readily available in supermarkets and other kitchen-type places.

The grinders that are available for sale are essentially two-pronged blades that are located at the bottom of an enclosed chamber. It spins fast and chops anything it touches including your beans. The blade is activated by pressing the button. It then chops your coffee beans into various sizes. The small pieces are pushed 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 hard to measure accurately. This is why you can't be certain of the amount of ground coffee your grinder made.

These grinders could also burn your beans and ruin your coffee. The heat can also rob some of the flavor of your beans. This can leave you with a an unappetizing cup of coffee maker with grinder.

If you've been grinding your own red coffee grinder using a blade grinder and you're ready to get rid of it and upgrade to a more powerful. A burr mill can complete the job for a fraction the cost, and provide an even better result. It's worth it. If you're looking for more control over the brew try a manual burr grinder like the Rhino hand grinder. These grinders have burrs, but they are powered by the crank. This allows you to control the grind more than a plug-in or electrical grinder.