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Blade Grinder - Why You Shouldn't Use One

Blade grinders have a blade that looks like a propeller (think blenders). They are used to chop coffee beans. They are less expensive than burr grinders, and are easy to clean but do not produce uniform grounds and can lead to over-extraction and bitterness in your brew.

To get the best coffee experience, you must have uniform distribution of particles. This is only possible using burr mills. This is the reason why coffee snobs hate burr grinders.

Inconsistent Grinds

You might have noticed that your grinding results are inconsistent in the event that you've used a blade mill over a long time. This is because the machine is likely to have become worn out and dull. As the grinder wears out it will break up beans into different sizes. This can result in different levels of coarseness. With these various-sized coffee particles, it's hard for your coffee maker to create a balanced, consistent flavor.

A blade grinder makes use of an e-rotating blade that resembles a propeller to break beans. It cuts the beans into smaller and smaller pieces which are then tossed into a catcher via a screen. This technique is efficient however it doesn't provide the most efficient grind for your drink. Burr grinders are a better alternative. A burr grinder is a much bigger machine, with a large motor and two grinding burrs. The burrs are placed at a specific distance from each other which determines the fineness of your ground coffee grinder compact.

If the burrs are too close to each other, they'll crush the beans, rather than cutting them. This means that the resulting grounds are less coarse and more fine. They also tend to be soft, which can adversely impact your coffee's taste. On the other however, if the burrs are placed too spread out, they will create large chunks of coarsely-ground coffee. It is important to select a grinder with a setting that corresponds to the desired coarseness.

A sharp blade, when adjusted properly, will produce a fine and consistent grind for your coffee. If you notice that your grind is becoming increasingly uneven, it could be time to replace the burrs or blade. If you haven't already done so, you must also alter the grind setting in order to achieve more even grinding.

It's also worth noting that if your machine produces clumped up grounds this could be an indication of worn-out or damaged blades. The clumping occurs due to tiny particles sticking to each other and larger pieces of grounds making larger granules that don't dissolve well in water. This happens more frequently as your burrs become duller.

Uneven Extraction

The size of the coffee grounds is crucial to extract flavor, whether you're making a French press, pour-over or drip brew. Uneven ground sizes can cause uneven extraction, creating an unbalanced cup.

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 grind particle size. A blade grinder produces an assortment of larger fragments, small particles, and everything between. Different grind sizes are extracted at different rates, which results in a sloppy and often bitter cup of coffee.

The lack of uniformity also creates problems when filtering and tamping. With a burr mill, you can achieve a uniform particle size, allowing better tamping and filtration, which prevents over-extraction. With a blade grinder it is more difficult to achieve an even grind and you may find yourself tamping from side to side or using the Stockfleth method (which takes some time to master).

The high speed and the heat produced by blade grinders is another problem. This could cause the ground to get burned and create a bitter taste. Burr grinders are much cooler and don't generate the same amount of heat, which helps preserve the flavor of the beans.

A final downside of grinding with a blade is that it's very easy to over-grind your beans. Running the grinder continuously produces heat and will eventually cause your beans to be excessively extracted, which can result in bitter beverages. To avoid this, always put the grinder off before turning it back on.

The use of a blade grinder is an efficient and affordable method of grinding your coffee at home, but it's not the best option for those serious about their coffee brewing. It is recommended to use whole beans and use burr grinders for the best results. Make sure you invest in your coffee making experience by purchasing a grinder that is of high-quality and will deliver on every aspect of your coffee needs!

If you're ready to upgrade your blade grinder, take a look at our top choices for the best burr grinder burr grinders on the market. The kind of grinder you select will impact the quality of your brewing as well as your beverage. Consider your budget, space, and preferred brewing method before making your decision.

Burned Grounds

Blade grinders use sharp blades to grind the beans. The blade spins at high speeds, like a blender. As the blade rotates at a fast speed, heat is produced which could cause the burning of some of your grounds of coffee machine and grinder. These particles can ruin the flavor of your coffee and aren't suitable to brew.

A first-class coffee experience demands uniform distribution of the particles for optimal flavour extraction during the brewing process. Because blade grinders break the beans into varying size pieces, small and large it is impossible to achieve this consistency. A burr mill, however creates an even distribution of particle sizes that can be reproduced across a variety of brews.

While the advantages of a blade grinder include its low cost and speedy execution, its main drawbacks are that it generates heat when it is used, creates irregularities in the size of the grind, and is not able to control the final particle size. With a bit of practice however, there are ways to maximize results despite the inherent limitations of this type of grinder.

When combined with a burr grinder, the user can easily adjust the gap between the grinding discs to fine-tune the exact ground size of their choice. This allows them to extract all of the desired flavours from their favourite roasted beans every time. It takes a lot of practice to make a good brew using a blade grinder.

An angle grinder is an extremely powerful tool that should be utilized only by trained professionals. If it is used incorrectly it can result in an unsafe condition known as grinding burn, which can cause localized changes in the metallographic structure of the surface of the workpiece. This could cause cracks that is not properly checked, can eventually lead to teeth fracture and macropitting.

Grinding burn is a major 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, be sure you wear the appropriate PPE including gloves and a face shield, safety glasses, steel toe boots and long sleeves. This will stop hot sparks from flying off the machine and hitting nearby equipment or people. Sparks can be as hot as 3,600 degF and can be able to burn through paint or metal.

Brew that is disappointing

A blade grinder can chop your beans up indiscriminately and leave you with different-sized ground. These different sizes of grounds extract at different rates in your coffee maker which results in an unpalatable or weak cup of coffee. The issue with this is that it can ruin the balance that makes a good 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 it said that using a burr mill instead blade mills is the best method to make the best brew. But many people don't know how to use a burr mill or even what it does so they opt to buy one of the flimsy, uncontrollable blade grinders that are easily found in supermarkets and other kitchen-type places.

These cheap grinders are essentially a two-pronged blade that is at the bottom of an enclosed chamber. It spins quickly and chops anything it touches including beans. Press a button to activate the device and the blade chops up your beans into a plethora of different sized pieces. The smaller pieces fall to the bottom and get chopped all over again, while the large pieces remain towards the top of the chamber. This makes for uneven grounds that are difficult to measure accurately - which is the reason you can't be certain of the amount of ground coffee your grinder made.

These grinders could also burn your beans, ruining your coffee. The heat can also take away some of the flavor from your beans. The result is a an unappetizing cup of coffee.

If you've been grinding your own coffee with a blade grinder It's time to put it down it and upgrade to a better. A burr mill can complete the job at a fraction of the price, and produce the same results. It's well worth the investment. Try using a manual burr mill such as the Rhino Hand Grinder if you would like to have more control over your brew. These grinders are equipped with burrs, but are powered by a crank, which provides more control than a plug-in or electric grinder.