How to sharpen a meat grinder knife at home. Homemade tool for sharpening meat grinder knives Using a special machine

A meat grinder is an indispensable thing in the kitchen. With its help, every housewife will be able to cook a huge number of dishes from minced meat and vegetables. Despite the fact that other universal appliances, such as a blender or a food processor, have already appeared in the modern kitchen, the meat grinder still confidently competes with them. However, the blades of the device become dull after prolonged use, and the question of how to properly sharpen the meat grinder knives one day becomes relevant.

Why do meat grinder knives need to be sharpened?

Depending on the frequency of use of the meat grinder, its blades lose their sharpness. This can occur due to the formation of small chips and depressions in the place where the movable and fixed cutting elements come into contact.

Knives in a meat grinder must be sharpened at regular intervals.

The most common reason for the unsatisfactory operation of the meat grinder is the blunting of the knives, if they were originally made from low-quality raw materials.

Basically, the device works with a relatively soft product - meat. But small bones or tendons, when grinding, fall on the cutting edge of the blade, which leads to a gradual loss of sharpness. At the initial stage, you can find that the meat grinder began to "chew" the meat, and soon after that it completely stops grinding it.

Also, with improper care, the metal from which the knives are made begins to oxidize and rust. It also negatively affects their sharpness.

Today, manufacturers produce all the components for small household appliances in sufficient quantities. You can easily buy a new sharp knife for a meat grinder,. But this will require additional costs, in addition, often the problem is detected at the moment when the cooking process has already begun.

Cutting elements for electric and mechanical meat grinders have approximately the same shape and metal alloy composition. The only difference is that in a mechanical device, the knives are scrolled manually, while in automated devices, an engine is built in that performs a similar function. Therefore, you can sharpen the blades in the same ways.

Important! The frequency of sharpening knives should correspond to their blunting. As soon as you start to notice that the meat grinder does not grind food enough or simply crushes them, it is worth updating the edges of the blades.

The nuances of correct sharpening

Grinding products in a meat grinder is provided by 2 knives:

fixed knife mesh;
four blade cutter.

The second knife is a rotating part, thanks to which the main grinding takes place. Therefore, it is necessary to pay attention to the sharpening of all its sides.

In the accompanying instructions for the device, depending on the manufacturer, the mesh knife may have a different name. It is often referred to as a stationary knife or simply a mesh.

Fundamental rules:

If sharpening will be done with a whetstone, take a metal ruler and make sure that its surface is strictly horizontal.
If sandpaper is used as an abrasive, then it is better to fix it on the work surface. It would be useful to place any flat removable surface under it, for example, glass, to protect the table from scratches during operation.
Pre-treat the knives with vegetable oil and leave for 5 minutes. Do the same with the tool with which sharpening will be performed. This is necessary so that a gentle abrasive paste can form during sharpening. It will also help minimize scratches and splinters on the knives.
To ensure even removal of the metal layer, try to press the center of the knife against the grinding surface.
The mesh knife also becomes dull during operation, so it also needs to be sharpened.

3 ways to sharpen meat grinder knives at home

Regardless of which method you choose for sharpening, you need to prepare the necessary materials with which the work will be done. Proper organization of the process will allow sharpening knives quickly, efficiently and without damaging them. You can return the blades to their former sharpness on their own, having one of the sharpening tools at home and about 30 minutes of time.

There are several ways to sharpen meat grinder knives:

on a grinder;
with a grindstone;
sandpaper.

All these methods do not require special skills and expensive devices. You can buy everything you need in hardware stores.

On the grindstone

If you have absolutely no experience in sharpening meat grinder knives, buy a corundum whetstone in a specialized store. The best option would be if its diameter is approximately 180 mm, and the grain size is from 40 to 60 microns.

Sharpening stone - a simple and affordable tool for sharpening knives

The process itself has the following features:

Sharpening should be done under a gentle stream of water. To do this, place the stone in the sink and moisten it abundantly. The water will act as a lubricant and cool the metal.
Fix the grindstone on the work surface. To do this, you can put a rag under it.
Take the cutter and place it with the blade towards the stone.
Perform circular movements in a clockwise direction with even pressure on the knife.
Continue sharpening until the surface of the element is completely shiny.
After the sharpening of the rotating knife is completed, do the same with the mesh knife. To do this, place it on the stone with the side adjacent to the first knife.
After sharpening both knives, check the fit. To do this, fold them together with the corresponding sides and look at the light. No cracks should be visible.
Finally, rinse the knives under running warm water to remove the abrasive.
Assemble the meat grinder and try it in work.

Important! The considered method is effective for not too dull blades. If the knives have rusted and are in a state of disrepair, then it most likely will not give the desired result.

Video: how to sharpen meat grinder knives with a grindstone

On the machine

This is a very simple and quick way to sharpen knives yourself. Sharpening is done using a rotating grinding wheel. Before starting work, an abrasive goi paste is applied to its surface, which, when dried, creates a rough surface on the disc due to the content of small particles in its composition.

To work on a grinder, you need a little skill

Important! Use Goi Paste No. 4 with a grit of 17-8 microns.

Grinding of the mesh knife on the machine is carried out as follows:

Apply abrasive paste to the surface of the machine disk and wait for it to dry. Only after that the device will be ready for operation.
Turn on the machine. The disk will start spinning.
Gently press the mesh knife against the surface of the disc. Try to distribute pressure evenly.

Sharpening a torch with a machine can be difficult if you are not experienced with a machine. It needs to be done in 2 steps:

First, sharpen each of the 4 knife blades by leaning them against the rotating disc at an 80° angle.
It is very important to maintain the angle of inclination relative to the machine evenly.
The second stage will be the grinding of the formed burrs. To do this, follow the steps similar to sharpening a mesh knife.

It is necessary to sharpen the cutter on the machine, observing small breaks between stages. This is necessary in order to allow the metal of the knife to cool.

Video: an example of processing blades on a machine

sandpaper

One of the easiest and most affordable ways is to use sandpaper. She will definitely be in your home. In extreme cases, you can buy it at a hardware or hardware store. The cost of this tool is several times less than the cost of a grindstone or machine.

Do not use paper with a large fraction of grains to sharpen meat grinder knives.

So, the sharpening process is carried out in the following sequence:

Place a sheet of sandpaper horizontally on the desktop. For convenience, it is desirable to provide him with additional fixation.
In a clockwise circular motion, begin to rub the knife until you achieve a sheen and sharpness of the blades.
Do the same with the mesh.

Important! The movements should be only circular and resemble wiping the surface.

Video: sandpaper sharpening master class

The process of sharpening knives for a meat grinder at home is quite feasible even for people without special experience and skills. All you need is a sharpening tool and some free time. If you notice a deterioration in the sharpness of the blades in the device, do not hesitate to process them.

Dear visitors!!!

As we know, sharpening knives for meat grinders is carried out by specialists working in workshops that are equipped with the appropriate equipment. But usually, we do not all have free time and the opportunity to visit specialized workshops to meet our needs.

Usually, for grinding a circular knife (lattice) and sharpening the cutting edge of a cross-shaped knife (for a meat grinder) - you can use an electric emery.

Emery electric

Currently, electric emery is available in a large assortment in specialized stores, which of course meet their technical requirements.

However, for some reason, we have to make this electrical appliance with our own hands. Insignificant costs for the manufacture of electric emery include the purchase of an emery wheel and a nozzle, which is installed on the rotor shaft of the electric motor. The electric motor for emery itself is most often borrowed from an unnecessary washing machine. It should be noted here that for grinding the grating and sharpening the cross-shaped knife, there should be no radial and end runout during the rotation of the emery wheel. The axial and radial runout of a rotating emery wheel will depend on how you set the emery wheel. That is, it is initially necessary to determine the displacement of the emery wheel (during its rotation) and then eliminate its beating.

Nevertheless, in terms of quality, preference should be given to special types of machines designed for grinding grates and sharpening cruciform meat grinder knives.

Machine for sharpening meat grinder knives

Using this sharpening machine, you can set the required angle for sharpening the cutting edge of the knife, as well as grind the meat grinder grate itself.

If there is no such opportunity to purchase a sharpening machine for meat grinder knives and other cutting tools, I suggest you watch the video, which, in my opinion, contains useful information.

That's all for now. Follow the rubric.

This homemade device allows you to correctly and quickly sharpen knives and grates of a meat grinder. In fact, these are two nozzles for a screwdriver or drill, the design of the devices is made in such a way as to evenly distribute the force over the entire plane during sharpening.

You will need materials:

Two long bolts and 4 nuts to them.
Two thin bolts and two nuts.
Two springs.
Two pucks.
Metal strip.

This is what the tools for sharpening a knife and mesh look like.

We start by making a knife sharpener.

We measure the size of the square hole of the meat grinder knife.

We take a long bolt and grind the head under the square, the knife hole.

Now we assemble the fixture as follows: we put a washer on a bolt with a square cap, then a spring, another washer, two nuts. We tighten the spring with nuts so that pressure is created and the spring does not hang out.

We tighten the nuts together with two wrenches.

The device for sharpening the meat grinder knife is ready.

Now let's start making a device for sharpening the meat grinder mesh. We take a strip of metal and drill three holes in it, a central one for a large bolt and a pair of side holes for small bolts. It should be noted that the side bolts must fall into the extreme holes of the mesh.

We assemble, insert the central bolt, after screwing one nut onto it, fix it with another nut.

We insert thin bolts of the same length into the side holes and also fix them with nuts.

It is important here that the central bolt be lower than or equal to the length of the thin bolts relative to the level of the rectangular plate.

This is how we made devices for sharpening knives and meat grinder nets.

The process of sharpening the grid is as follows: first with sandpaper with a large grain, then with a fine one, and at the end with the smallest one.
We put it on a flat surface or other material, it is important that the surface is perfectly flat. Then we put sandpaper with a large grain on top, then the mesh knife itself.

We lower the fixture so that all the bolts fall into the holes. You don't have to go all the way to the end. It is necessary that the spring create a pressing force.
We turn on the drill and sharpen the mesh for a few minutes.

With this simple tool, you can quickly and correctly sharpen your meat grinder knives. Quickly, because a drill, machine tool or screwdriver is used to rotate the knife, but correctly, because the device gives the optimal pressing force on the entire plane without distortion.

Required to assemble fixture

A pair of long bolts with four nuts to them.
A pair of thin bolts with two nuts to them.
Two springs.
A piece of thin steel plate.

Making a tool for sharpening meat grinder knives

First we will make a device for sharpening a cross-shaped knife. We measure the internal size of the square hole with a caliper.

We grind the bolt head on a taphole machine to a square with the dimensions of a square hole in the knife.

We assemble the device in the following sequence:
We put a washer on a bolt with a square cap, then a spring. Next, another washer, two nuts. We tighten the spring with nuts so that pressure is created and the spring does not hang out just like that. Now we tighten the nuts together with two wrenches so that nothing will unscrew in the future.

The device is ready.

But before starting to sharpen the edges that are adjacent to the mesh knife, we sharpen the perpendicular planes. Let's do it on the same tape machine.

Let's put everything aside for now and proceed to the manufacture of a device for a mesh knife.
You will need a rectangular piece of metal. You can take steel or aluminum.
We apply grids to the knife to mark the boundaries and cut off the excess, drill three holes: in the center and on the sides for the guides.

Drill the middle hole for the large bolt. And va small under thin bolts.

We assemble the device. We insert the central thick bolt, having previously screwed one nut onto it. After fixing with another nut.

We insert thin bolts of the same length into small holes and also fix them with nuts with force.

The device is ready. The main thing is that the central bolt should be lower than or equal to the length of the thin bolts relative to the level of the rectangular plate. See photo.

Now the fixtures are ready.

Sharpening meat grinder knives

Sharpening will be done on a vertical drilling machine, but you can use a hand drill or a screwdriver.
We fix in the cartridge a device for sharpening a mesh knife.

We will sharpen in three stages: first with coarse sandpaper, then with fine, and at the end with the finest.
We put it on a flat lining made of a piece of steel or other material. The main thing is that the surface is perfectly flat. Then we put sandpaper with a large grain on top, then the mesh knife itself. We lower the fixture so that all the bolts fall into the holes. You don't have to go all the way to the end. It is necessary that the spring create a pressing force.
We turn on the machine and within a few minutes we sharpen the knife.