Blade Grinder - Why You Shouldn't Use One
Blade grinders use blades that look like a propeller (think blenders). They are used to chop coffee beans. They are cheaper than burr mills and are easy to clean, however they don't produce uniform ground and can cause bitterness or over-extraction in your brew.
A premium coffee experience requires uniform particle distribution, something that can only be achieved with the use of a burr grinder. This is why coffee snobs hate burr grinders.
Inconsistent Grinds
If you've been using a blade grinder for a while there's a good chance that your grinding results have changed. The machine is likely to become dull and worn. As commercial grinder Coffeee will produce different-sized pieces of beans. This produces grounds with varying levels of coarseness. With these different-sized coffee particles, it's difficult for your coffee maker to extract a balanced, consistent flavor.
A blade grinder cuts beans by rotating a blade that resembles propellers. It chops the beans up into smaller and smaller pieces which are then dropped into a catcher, which is then filtered through a screen. This method is effective however it's not the best grind possible for your brew. Burr grinders are a better choice. A burr grinder comes with an efficient motor with two grinding burrs, and is a larger machine. The burrs are placed at an exact distance from one another which determines the fineness of the coffee that you grind.
When the burrs are too close together, they will pulverize the beans instead of cutting them. The result is a more fine more refined, less coarse ground. They also tend to be fragile, which could negatively impact the taste of your coffee. On the other however, if the burrs are spaced too spread out, they will create large chunks of coarsely-ground coffee. It is essential to select a coffee grinder that has an adjustment that is in line with the coarseness you desire.
A sharp, properly-adjusted blade will result in an even and fine grind for your coffee. If you notice that your grind is becoming more uneven, it may be time to replace the blade or burrs. It is also advisable to change the grind setting if you haven't done so already in order to allow you to achieve an even and consistent grind.
It's also worth mentioning that if your machine produces ground that is clumpy it is an indication of worn or damaged blades. The clumping occurs when tiny particles bind to one another, and larger pieces of ground form, producing larger granules that don't dissolve in water. This happens more frequently as your burrs get duller.
Uneven Extraction
No matter if you're using drip, French press, or pour-over, the size of your grounds plays an crucial role in preserving flavor. Uneven ground sizes lead to uneven extraction and a sloppy cup of coffee.
The beans are sliced and shred indiscriminately as they move through a blade mill, resulting in an unbalanced distribution of grind particle size. A blade grinder produces smaller fragments, near-dust size particles and everything in between. Different grind sizes extract at an uneven speed, creating a cup of coffee that is often bitter and inconsistent.
Inconsistency can result in problems with tamping and filtering. With a burr mill, you can attain an evenly-sized particle size allowing for more uniform tamping and filtering which prevents over-extraction and weak beer brews. With a blade grinder it is more difficult to achieve an even grind. You may find yourself tamping from side to side or using the Stockfleth method (which takes some practice).
The high speed and heat produced by blade grinders is a different issue. This could cause the ground to burn and create a bitter taste. Burr grinders produce less heat and are cooler, preserving the flavor of beans.
Another drawback of a blade grinder is that it's very easy to over-grind your beans. Continuously running the grinder generates a lot of heat and will eventually cause your beans to be excessively extracted, leading to bitter brew. To avoid this, always stop the grinder before turning it back on again.
A blade grinder is a convenient and cost-effective method of grinding your own coffee at home however, it's not the best option for those who are serious about their brewing. For the best results, you'll want to utilize a burr mill as well as whole beans. You should invest in your brewing experience and purchase a grinder that is of high-quality and will satisfy every aspect of your coffee needs!
If you're ready to upgrade from your blade grinder, check out our top choices for the best burr grinders on the market. The kind of grinder you select will impact the quality of your brewing and your cup. Consider your budget, space and preferred method of brewing before making a choice.
Grounds burned Grounds
A blade grinder employs a sharp blade to grind the beans. The blade spins at high speeds similar to blenders. The blade's rapid movement produces heat, which can burn some of the coffee grounds. These burned particles aren't ideal for the brewing process and will create an unpleasant taste in your coffee.
A first-class coffee experience demands uniform distribution of the particles for the best flavor extraction during the brewing process. This is not possible with a blade grinder, which breaks the beans into large and small pieces. A burr grinder, on the other hand, achieves an even distribution of particles that can be replicated across a variety of brews.
While the advantages of a blade grinder include its low price and fast operation, its major drawbacks are that it generates heat during use, produces variations in the size of the grind and lacks control over final particle size. There are ways to increase the efficiency with this type of grinder, despite its inherent limitations.
When combined with a burr grinder users can easily adjust the distance between the grinding discs to fine-tune the exact size of ground of their preference. This lets users to extract the desired flavor every time they drink their favorite roasted bean. However, making a good beverage using a grinder requires a lot of trial and trial and.
An angle grinder is a potent tool that should be used only by trained personnel. If it is used incorrectly it could cause a dangerous condition known as grinding burn, that causes localized changes to the metallographic structure of the workpiece's surface. This can lead to cracking, which is not properly checked, could eventually cause macropitting and teeth fracture.
Grinding burn is a major issue that can be caused by a range of reasons, including excessive grinding pressure, inadequate cooling or improper operator training. Wear the appropriate PPE when using an angle grinder. This includes safety glasses as well as a face shield and steel toe boots. This will stop any sparks of heat from flying off the tool and striking equipment or people close by. Sparks can be capable of reaching temperatures as high as 3,600 degF, and can be destructive to materials like paint or even metal.
Brew that is not what you expected.
A blade grinder chops up your beans randomly, leaving you with grounds that are all different sizes. The uneven ground extracts coffee at different rates, resulting in the cup being bitter or weak of coffee. The problem with this is that it ruins the balance that makes a great cup of coffee. Soluble compounds in your beans are extracted over time, resulting in the flavor that makes your coffee scrumptious.
You've likely heard that using a burr grinder instead of a blade grinder is the best way to guarantee a great brew. Many people aren't aware how to use a grinder or even what it can do so they opt to buy one of the cheap, uncontrollable, blade grinders that are readily available in kitchen and grocery store places.
These grinders are basically an angled blade with two pronged edges that sit at the bottom of an enclosed chamber. It spins rapidly and chops anything it touches including your beans. Press a button to activate it and the blade cuts up your beans into a variety of differently sized pieces. The smaller pieces fall to the bottom and are chopped again, while the larger pieces remain at the top of the chamber. This causes uneven grounds, which are difficult to measure.
Another issue with these grinders is that they generate a lot of heat while they grind, which can burn your beans and ruin your coffee. The heat can also take away some of the flavor from your beans. The result is a not the best cup of coffee.
If you've grind your own coffee using a blade grinder, it's time to retire it and upgrade to a more powerful. A burr mill will do the job for a fraction of the cost, and provide an even better result. It's worth it. If you're looking to have more control over the brew try a manual burr grinder such as the Rhino hand grinder. These grinders feature burrs, but they are powered by the crank. This allows you to control the grind more than a plug-in electrical grinder.