How to sharpen Xiaomi electric sharpener: knives, drilling and care

Owning a tool from Xiaomi’s ecosystem often involves not only buying a gadget, but using it correctly. An electric sharpener is a compact device that can bring kitchen knives and building tools back to their edge in minutes. However, many users make mistakes that negate the efficiency of the process or even ruin the blade.

The sharpening process requires understanding the physics of the cutting edge and the features of abrasive materials. Unlike hand bars, automatic systems control the angle of inclination, but require the product to be positioned correctly. If you just randomly drive a knife inside the device, you can get an uneven chamfer or overheat the metal.

In this article, we will take a look at the algorithms for different types of tools, the speed and pressure settings, how to extend the life of abrasive discs and avoid the typical novice mistakes, and the right sharpening is a guarantee of safety and convenience in the kitchen or in the workshop.

Principle of operation and device preparation

Xiaomi’s electric models and sub-brands like Deerma or Nextool use rotating abrasive discs or diamond-laced guides. The main advantage is the stability of the sharpening angle, which is hardwired by the grooves’ design. Before starting work, you need to make sure that the device is securely fixed on a flat surface.

It's important to check the condition of the abrasives, if you see metal chips or they're clogged with dust, the sharpening efficiency drops dramatically, and cleaning the discs is a mandatory preparation step that is often ignored, and you can use a special cleaning stick or a hard brush that comes with the kit.

⚠️ Warning: Never turn on the device if the abrasive discs have visible cracks or chips.This can cause fragments to break apart and injuries.

Preparation also involves choosing the right mode if your model supports speed adjustment. Coarse metal processing requires high speed, while finishing polish is done at low revs. Incorrect mode choices can lead to overheating of the edge, which is especially critical for expensive Damascus steel knives.

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Before first use, run the sharpener idly for 10-15 seconds to remove factory dust from abrasive circles.

Cutting kitchen knives: step-by-step instructions

Kitchen knives are the most common sharpening object, and the process is divided into several stages, each with its own nuances, first you need to determine the degree of blunting of the blade, and if the knife has stopped cutting tomatoes or paper, you need to fully process.

Put the knife in the right slot for rough sharpening. The movements should be smooth, from the base of the blade to the tip, with a light press. You don't have to push hard: the sharpener mechanism will do the job itself. Excessive pressure will only accelerate the wear of the abrasive and can deform the thin blade.

After rough treatment, move to the finish polish section, where the movements become even easier. The goal of this stage is to remove the microscopic burrs and polish the cutting edge. Xiaomi often uses ceramic discs for this stage, which provide a mirror shine.

• 🍅 Hold the knife strictly perpendicular to the table, without putting it left or right.
• 🔄 Movements should be progressive, without jerks and stops in the middle of the blade.
• 💧 Periodically wet the blade with water to lower the temperature of the metal.

Sharpening drills and other tools

Not everyone knows that many Xiaomi sharpeners have additional holes or nozzles to sharpen drills on metal, a critical feature for home craftsmen. A dull drill not only doesn't drill, but it overheats the drill engine and also spoils the hole.

To sharpen the drill, you need to get the diameter of the hole in the sharpener right, and the drill is inserted to the point where the device turns on. The key here is the sharpening angle, which is usually 118 or 135 degrees. Automatic systems lock the drill in the right position, but the user needs to make sure that it does not turn.

⚠️ Warning: Do not attempt to sharpen sprayed drills (such as cobalt or diamond-laced drills) on standard stones.

It takes only a few seconds for each drill pen. After sharpening, be sure to check the symmetry. If one side is more polished than the other, the drill will beat when it's working, in which case you need to repeat the procedure with more attention to alignment.

Setting the corners and choosing abrasive

Different types of knives require different sharpening angles: Japanese kitchen knives sharpen at an angle of 10-15 degrees, European knives at 15-20 degrees, and hunting or machetes at 25-30 degrees. Xiaomi devices often have fixed grooves, but some advanced models allow you to adjust this parameter.

If you're using a model with interchangeable abrasive circles, it's important to know the markings, diamond discs are suitable for hard steels, ceramic wheels are suitable for finishing polishing, and carbide wheels are suitable for quickly restoring the geometry of heavily blunted tools, and the choice of abrasive directly affects the result.

Below is a table of matching tool types and recommended sharpening parameters:

Understanding these differences will allow you to avoid spoiling an expensive tool, such as sharpening a thin fillet knife at a 30 degree angle, making it unsuitable for fine cutting, turning it into an axe.

sharpener care and maintenance

To make it last, you have to take care of it. The main enemy of electric sharpeners is metal dust, which accumulates inside the case and on the discs. Regular cleaning prolongs the life of the motor and maintains the efficiency of the abrasive.

Use a dry soft brush to remove large shavings. Once a month, it is recommended to blow through the internal mechanisms with compressed air if the construction of the housing allows. Bearings are usually not required lubrication, since they are closed, but in models with an open design, you can drop a drop of oil for sewing machines.

• 🧹 Clean the knives after each use.
• 🌬️ Do not allow moisture to enter the body of the device.
• 🔌 Keep the power cord rolled up, avoiding the clamps at the base.

If you notice that the sharpener began to buzz louder than usual or the vibration increased, this is a signal that the discs are unbalanced or foreign object hit, in which case operation should be stopped until the malfunction is corrected.

Typical errors and security measures

The most common mistake is to sharpen ceramic knives on a standard electric sharpener. Ceramics require special diamond discs and other speeds. A conventional stone will simply crumble the cutting edge of a ceramic blade and it will be impossible to repair it.

Another mistake is overheating. If you hold the knife in the sharpener too long at one point, the metal heats up and "releases" to lose tempering. The movements must be constant. Controlling the temperature of the blade with your hand (carefully!) will help you know if you overheat the metal.

⚠️ Attention: It is strictly forbidden to sharpen in an electric sharpener objects made of glass, stone or ceramics, which are not intended for this purpose.

And also, finger safety, because despite the protective casings, you don't have to experiment and try to push small objects deep into the grooves, but you have to use holders or special devices for small blades.

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The main safety rule is never to remove protective casings and do not try to modify the device to sharpen non-standard items.

Comparison of models and choice for the home

There are several modifications to the Mijia ecosystem on the market, basic models like the Deerma DEM-ND01 are great for kitchen tasks, are compact, cheap and easy to operate, and for professionals or frequent use in the workshop, more powerful versions with angle adjustments will be better suited.

When choosing, consider the presence of anti-slip legs and battery power. Autonomous models are more convenient to use in a garage or in a country where there is no access to an outlet. Engine power also plays a role: weak motors can stop when pressed hard.

In conclusion, the electric sharpener is not a luxury, but a useful tool that saves time and nerves, and the right use and care will make it an indispensable assistant for many years to come.