How to sharpen planer knives

How to properly sharpen planer knives. Sharpening machine for planing knives

Owners of planing machines and electric planers periodically face the problem of sharpening cutting edges. A well-sharpened tool will ensure clean wood processing even at non-ideal angles and speeds. The easiest way is to sharpen knives and knife heads with your own hands using specialized equipment.

Knife sharpening is necessary

sharpening planer knife

Planing knives require timely care because:

blunt surfaces process wood poorly;
when processing soft rocks with dull knives, the surface becomes covered with lint and unevenness;
worn edges crumble;
During planing with blunt edges, the engine and power units are overloaded.

Attempts to sharpen blades with your own hands using diamond stones, as a rule, give short-term results. Due to poor quality of editing, the blades have to be sharpened soon. Therefore, professional carpenters use only mechanical sharpening.

Types and designs of machines

The machines on the market are distinguished by the knife feeding mechanism:

The machine for sharpening planing knives with manual feed consists of:

grounds;
abrasive stone;
carriages for fixing the knife.

During processing, the cutter moves forward with the help of a handle. Transverse movement of the cutter is ensured by a flywheel.

Automatic machines differ in size and range of options. Mechanisms for industrial use are installed on a powerful cast-iron frame. The carriage is equipped with a support. You can set the speed of movement of the blade and the thickness of the metal layer being removed. Industrial machines allow you to simultaneously sharpen several planer blades without changing settings.

Corvette K-470	WTG-163	GA-630	GA-850	ZX-1000
Maximum length of knives, mm	630	630	640	850	1000
Abrasive disc diameter, mm	100	150	125	125
Sharpening angle, degrees	3555	up to 30	3545	3545	Up to 30
Engine power, W	550	550	850	850	1500
Dimensions, cm	90 x 48 x 42	100 x 60 x 65	100 x 54 x 120	120 x 54 x 120	190 x 56 x 150
Weight, kg	75	60	112	125	250
Add. intelligence	Equipped with an asynchronous motor, wet sharpening possible	Processes cutters, circular saws	Wet sharpening possible	Can sharpen up to 4 blades, wet method	A wet method is provided, a cup-type grinding disc is controlled via a remote control

Table 1. Characteristics of some models of machines for sharpening planing knives

Compact automatic machines for home and small workshops are designed to process one cutter in one go. They also provide speed control and automatic tool feeding.

Before starting work on any sharpening equipment, you should make sure that the frame is securely fastened. Machine vibration impairs the quality of sharpening and can lead to injury to the operator.

Basic rules for using manual feed equipment

machine for sharpening planing knives Corvette-470

Such machines are used for one-time work and for sharpening small batches of blades with your own hands, since the processing process is quite lengthy.

Before starting work, you need to make sure that the grinding surface is clean, without stains or streaks.
The movement of the carriage should be smooth, without jerks or jolts. It is forbidden to stop it when the cutter approaches the sharpener.
The faster the carriage moves, the lower the quality of sharpening. The optimal speed of movement is 5 - 6 m/minute.
For proper sharpening, the range of motion of the carriage is important. During a pass in each direction, it should move 10 - 13 cm further than the end of the knife. This ensures optimal contact between the cutter and the sharpener, which must be broken before moving in the opposite direction.

Basic rules for working on automatic machines

Planing knives can be sharpened dry or wet. In the second case, the blade is constantly washed with a stream of water. The wet method is gentler on the blade and more effective;
Before processing begins, it is necessary to set the following parameters: sharpening angle, amplitude of carriage movement. The amplitude should be 15 cm greater than the length of the knife;
The blades are carefully fixed in the mobile carriage with your own hands.

Homemade machine for sharpening planing knives

machine for sharpening planing knives Kraton-630

The design, made at home with your own hands, allows you to quickly and efficiently sharpen knives to one set angle. This will change the factory angle, so all blades will need to be re-sharpened. The quality of planing will not deteriorate, but may even improve.

To make a device for sharpening straight blades of planing, jointing and thicknessing machines with your own hands, you need:

metal corner No. 50;
round pipe with a diameter of no more than 50 mm;
electric motor from a washing machine;
powerful spring;
bolt with nut;
plastic handle (knob);
Bulgarian;
welding machine.

Making a machine with your own hands.

Cut a corner about 50 cm long.
We bend two pieces of pipe so that we get a stable stand for the corner, and weld the legs. The corner should be positioned vertically towards the master.
At the left end, behind the corner, we attach an electric motor. It is placed on two points: a rigid axis and a powerful spring; The spring is tightened and released using the adjusting screw, moving the motor closer or further from the angle guide.
We put an abrasive wheel on the electric motor shaft.
The engine is started by a switch located on the frame in a convenient location.
We feed the tool using homemade vise from a piece of pipe 25 cm long, a pressure plate, a bolt with a nut and a knob. We clamp the knife in a vice and move it along the guide, holding it by the knob.

this machine model:

Source: https://tehnolen.ru/kak-pravilno-zatochit-strogalnye-nozhi-zatochnoi-stanok-dlya/

Table of knife sharpening angles: how to sharpen a knife correctly

instrument.guru > Knives > Table of knife sharpening angles: how to sharpen a knife correctly

A knife is one of the oldest tools created by mankind and is indispensable in the household. Knives come in different types, are designed for different things, and are made from different types of steel. But most products have one thing in common: they require sharpening. If you do not sharpen the blade for a long time, it becomes dull and ceases to perform its functions well. In order to sharpen a knife in a timely manner and not spoil it in the process, you need to know the rules of how this is done.

Kitchen tools
Blade shapes
Dulling and sharpening the blade
How to determine the sharpening angle of a knife

Kitchen tools

The most commonly used and indispensable type of knife at home is the kitchen knife. At home, various knives are used, depending on the hobby and desires of the owner. Professional kitchen tools are used in professional kitchens of restaurants and cafes. This is a whole range of blades, different in shape and function. They also differ in the material from which they are made.

The most common materials:

Carbon steel is an alloy of iron and carbon, to which vanadium or manganese is also added. Over time, these blades may rust or become stained. They sharpen very well.
Stainless steel is an alloy of iron, carbon and chromium to which molybdenum or nickel has been added. Such blades require constant sharpening; if the blade becomes dull, the knife becomes unusable.
High carbon stainless steel is a combination of carbon and stainless steel, with the addition of vanadium, molybdenum and cobalt. Strength is increased, sharpness retention time is increased.
Damascus steel is a forge of different types of metal, where hard and soft alloys alternate. The material is expensive and is usually used by professionals. Hunting knives, collectible blades and razors are often made from it. Such blades are sharpened only by hand and along the edge.
Titanium alloy - made by sintering a titanium powder matrix with carbide inserts. It does not require sharpening for an extremely long time, but it needs careful handling and requires skills in working with itself and a professional sharpening machine.
Zirconium alloy is a hard mineral ceramic that has been dry pressed and fired. These blades are sharp and do not dull for a very long time, but they are very fragile and require special care and storage. They can only cut soft foods. They require sharpening, and with specialized tools.

THIS IS INTERESTING: What is atmospheric corrosion

To properly sharpen a knife, you need to know what material it is made of. The harder the alloy, the smaller the sharpening angle. The method of sharpening the blade is also selected based on the hardness of the alloy.

Blade shapes

A knife is always a combination of blade and handle. But blades can vary greatly and have component parts. The part of the blade that needs to be constantly maintained and sharpened regularly consists of the following parts:

Cutting edge, cutting edge height
Butt and its thickness
Rectangular section and its height
Descents, their height
Cutting edges, their height and thickness

The following blade shapes are also found:

Wedge-shaped
Razor
Chisel, “Japanese”
"Chopping Chinese"
Bullet-shaped

Dulling and sharpening the blade

Dulling of the blade occurs due to the following factors:

The blade rubs against the product during slicing
The blade has rough contact with heterogeneous particles in products or during falls and impacts with the surface
Chemical oxidation upon contact with acidic foods and herbs
Asymmetrical lateral loads

It is not difficult to determine a dull blade; it can be seen even by eye, but it feels very easy to the touch.

The purpose of sharpening is to restore the correct contours of the cutting edges of the blade and polish them to the required smoothness. The main difficulty of sharpening for people inexperienced in this matter is that you need to maintain the desired angle of the knife at all times during sharpening. To make this easier to deal with, special mechanisms or devices are often used.

Often, in addition to kitchen appliances, you also need to sharpen tools at home such as a straight razor, hairdressing or household scissors, and other tools. If a person shaves at home with a straight razor or often uses scissors as a household tool or metal scissors, they also become dull. The rules and sharpening tools for them are the same as for knives.

Most often, stones are used for sharpening at home. They have different shapes and stones are made from different materials: mineral natural stones, polymer alloys, abrasive mixtures, ceramics. When sharpening on stones, you can set the required sharpening angle and sharpen the knife correctly, but special skill is required.

Sharpeners that are made on the principle of dragging the blade do not allow you to set the sharpening angle, and therefore are suitable only for short-term edits. And in some cases it is generally undesirable to use them - you can damage the edge of the blade.

Chefs use musat - this is a handle with a rod made of longitudinal ribs. But sharpening with musat requires some skill and this method may not work the first time.

There are also electric sharpeners, but they are not suitable for sharpening kitchen knives.

How to determine the sharpening angle of a knife

The sharpening angle depends on the purpose of the blade. There is a table by which it can be determined. It was developed by the global company CATRA, which controls quality and advises on sharpening all types of knives.

According to it, depending on the purpose of the blade, the following sharpening angles are recommended:

Thinning and loining - 5–10 degrees
Fruit - 10–15 degrees
Cutting - 15–20 degrees
Boning for meat and large fish - 20–25 degrees
Cleavers , hatchets and vegetable knives - 30–35 degrees
Chopping axes - 40–45 degrees
Table knives - 55–60 degrees
Hairdressing scissors - 45–55 degrees
Household scissors - 50–60 degrees
Tin snips - 75–85 degrees
Straight razor - 10–15 degrees

In the table you can also find angles for rarer tools that can be used at home.

Also, do not wash knives, razors, scissors and other metal blades with hot water or put them in dishwashers to avoid dulling too quickly.

It should be taken into account that stones and sharpening stones are also designed for different types of blades - these properties are indicated on them, and the stone must be chosen so that it fits the existing blades for sharpening. Often the stone comes complete with a set of knives and must be suitable for a particular set or blades with similar characteristics.

Source: https://instrument.guru/nozhi/tablitsa-uglov-zatochki.html

Sharpening knives for woodworking machines is a mandatory process that can be done with your own hands using special tools. Sharpening is the restoration of the previous cutting capabilities of hacksaws, scissor shafts, planers, jointers and other devices for wood processing.

General information

Photos of sharpened knives

To sharpen the blade shaft of a planer or jointer, you will need the appropriate device;
The sharpening work is done by hand;
Craftsmen learned to assemble sharpening devices;
When restoring hacksaws, jointing devices, sharpening knife shafts, be sure to follow several recommendations and strictly follow the technology;
If the teeth of hacksaws and knife shafts are sharpened incorrectly, the quality of wood processing with tools will significantly deteriorate;
Sharpening stones are a good alternative for a sharpening machine. But if you have the opportunity to assemble it yourself or purchase a sharpening machine, be sure to take advantage of it.

Preparatory activities

Diagram of the device for sharpening knives of woodworking machines

If you need to sharpen knives for a woodworking machine, you should start with the required preparation steps. It is not so important what parameters the knife shaft or cutting sheets of hacksaws have 13 mm, 20 mm or all 200 mm, they will definitely need sharpening.

Some people prefer to send dull shafts to special workshops, where they can easily restore the previous sharpness of a 200 mm knife or a small lathe cutter. But both ordering sharpening and buying new knife shafts is a financially expensive matter.

Preparation for sharpening begins with familiarization with the available means of restoring the surfaces of cutting tools and some recommendations.

To keep jointers, planers, and hacksaws in working order, assemble or purchase an appropriate sharpening device.
The simplest, budget option is a whetstone. But the quality of processing directly depends on your skills in working with stone. If there are none, it is extremely difficult to achieve the required level of sharpening. Plus, stones are not able to cope with all types of cutting tools that are equipped with modern woodworking machines.
Choose a machine that can sharpen at low speeds, as this has a positive effect on the quality of the finish.
The recommended equipment for a sharpening machine is a water cooling system.
Carefully study the equipment of household woodworking machines. Often there is already a sharpening stone, which is optimally suited for processing the knives used.
If the stone is not included in the package, it will have to be purchased separately, leveled with a special device, and smoothed. This is the only way you can sharpen the knife shafts of jointing machines efficiently.
The machines have a function for setting the angle of inclination, adjustable with a special screw. By turning the screw and changing the position of the sharpening device, you can correctly fix the tool relative to the stone.
The next preparatory stage is the holder into which the knife shaft is installed.
If you are a beginner, it is not recommended to start your first job with 200 mm knives. Start literally with 13-15 mm, and gradually you will learn to process 200 mm and even 2 mm. To do this you need to accumulate certain experience.
The length of the knife is not a fundamental parameter, since the knife in the holder can move to the distance you require.
Make sure to hold the shaft firmly in place. Otherwise, you will get a significant distortion, due to which the quality of woodworking will suffer.
Study the operating manual of the purchased sharpening machine in detail. If this is a DIY tool, you will have to rely on drawings and available information on the Internet about a specific sharpening device project.

Sharpening

In order for the sharpening of knives for a woodworking machine to give a positive result, you can resume working with the equipment at the same level of quality, you need to adhere to a few fairly simple rules.

The sharpener holder can move left and right relative to the stone to sharpen knives.
Do not allow the blade to end up over the edge.
Immediately fix the holder at a distance of 12 mm from the edge of the grinding wheel.
When sharpening knives of 200 mm or smaller variations, make sure that the water cooling function is activated on the machine.
The cooling system requires constant monitoring. The tank usually has a small volume, so water needs to be added periodically. If it runs out and the sharpening process continues without cooling, you risk ruining a rather expensive knife.
As the knives are processed, water from the cooling system may accumulate on the floor. Since sharpening machines are electrical devices, ensure that water is drained away from your feet and wear rubber shoes. In any case, standing in a puddle of water while working with an electric machine is always dangerous. Follow safety regulations.
Keep the whetstone clean. It gets dirty quite quickly with active use.
The grinding wheels of machines are cleaned using a special device. The machines should be equipped with this cleaning bar, but if it is not included in the set, then you will have to purchase it separately.
Each subsequent sharpening, according to the operating rules, is performed only on the condition that the stone is cleaned. Therefore, after each sharpening, arm yourself with a cleaning bar and treat the machine with it.
On average, sharpening using a special machine takes about 10-20 minutes. It all depends on the type and size of the tool, which became dull as a result of woodworking operations.
After sharpening the tools of woodworking machines, do not rush to return them to their place and continue working. After processing on the machine, the tool needs to be fine-tuned.
Finishing consists of applying a special paste to the surface of the cutting element. Proceed according to the instructions provided by the manufacturer of the finishing paste on the packaging. Different pastes may differ slightly in application methods.

THIS IS INTERESTING: How many rods are there in a ton of 10 reinforcement

If you did everything correctly, then the knife should be perfectly smooth, sharply sharpened, and free of any irregularities or burrs. Don't worry when the result doesn't meet your expectations the first time. This takes some time and a little experience. That’s why you should start with simple and inexpensive knives that you don’t mind ruining.

Source: https://vi-pole.ru/kak-zatochit-nozhi-dlja-strogalnogo-stanka.html

What you need to know about sharpening jointer knives

The jointer and jointer have long been one of the most popular carpentry tools, and they have not lost their relevance today.

Many specialized specialists are interested in the question of how to sharpen jointer knives, since a fully prepared tool for work allows you to achieve better quality of work.

The first thing to do is to remove the knife and chipbreaker, which must be unscrewed before work. Used tools need to be cleaned of contaminants, such as tar, which is best removed with gasoline.

https://www.youtube.com/watch?v=2e1Dw-C_4rU

To sharpen planing and jointing type knives, it is better to use specialized devices. The procedure is also carried out manually; in addition, the device for sharpening jointer knives can be assembled independently. When working, you need to follow a number of rules, you can use several technologies.

Regardless of which sharpening option you use, you need to follow the instructions as closely as possible. Otherwise, you can achieve poor-quality work of the tool, the functions of which the carpenter will not be able to use 100%.

If you are thinking about how to sharpen jointer knives at home, then use regular sharpening stones, although choosing a professional sharpening machine with a cooling function is ideal.

Preparing to sharpen knives

Sharpening jointer knives can be done more efficiently if you choose a device with low speeds and high quality. If you want to use a whetstone, you must first level it. After straightening the device, the stone must be smoothed with a block.

Now set the appropriate angle of inclination, this is done by rotating the screw securing the blade. Next, you need to use the holder that is included in the standard equipment of the machine, where the jointing knife is fixed. Work should begin with knives no wider than 13 mm. The length is not important, since the holder holds the tool in a comfortable position.

To secure the knife well, hold it in the selected position and tighten the screws tightly.

To control the sharpening angle of the jointer knives, a marker is used to mark the chamfer of the knife. To understand the accuracy of the adjustment, you can turn the stone manually.

Tool sharpening

Sharpening jointer blades is a simple process, you just need to move the holder from side to side relative to the whetstone. Try not to let the blade go beyond the edges of the stone. Fix the holder 12 mm from the end of the circle.

When carrying out work, it is necessary to establish a supply of water cooling. Be prepared to regularly replenish the fluid in the tank and not allow the tank to dry out.

To ensure safe work, you need to ensure that moisture does not flow onto the floor under your feet.

Sharpening jointing knives is a rather lengthy procedure. Periodically check the cleanliness of the whetstone, as it can quickly become dirty. To clean it, you need to use a special bar as soon as contamination is detected. By the way, the choice of stone largely depends on the type of instrument. A planer can include knives of varying hardness types, so choose your whetstone carefully.

Typically, jointer knives are sharpened for 20 minutes, after which finishing needs to be done. This procedure is carried out using a special paste. Polishing is carried out so that the blade does not have the slightest roughness or burrs, otherwise the work with such a knife will not be complete. Check the effectiveness of sharpening by cutting a piece of paper with it. If the cut is made carefully, then the knife is completely ready for use.

Other materials for sharpening tools:
* Sharpening a hacksaw for wood.
* Sharpening a chisel with your own hands.

Subscribe to our Yandex.Zen channel

Source: https://drevologia.ru/to-chto-nuzhno-znat-o-zatochke-nozhej-fuganka/

Sharpening angle of knives for planer in degrees

» Machine » Sharpening angle of knives for planer in degrees

Sharpening jointer knives

What is the most important thing in sharpening jointing knives? This is an understanding of what you will do. You cannot sharpen a tool correctly without understanding how it works and without knowing what is needed and how to sharpen it. two types of jointing knives :

Planing knives are straight, thickness 3 mm, width 30 mm, length is not standardized.
tool for profile surfaces , consists of profile plates 8 mm thick, width 50, 60, 70 mm, length is not standardized.

Geometry of the jointing knife

All of them are wedge-shaped
cutter It is formed by a front face and a back face . If we intersect the front and back edges, we get an intersection line , which is called cutting edge . There can be one edge (jointer blade), two (saw teeth) or more (drills, drills).

When the front and back edges intersect, a sharpening angle is formed. It is usually 20-30 degrees.

crossing the front edge with the machined surface, a cutting angle . For a manual jointer it is 45 - 50 degrees, for a jointer: 45 - 65 degrees.

Intersecting the surface being processed with the back edge, we obtain the back angle .

Let's consider the sharpening angle . During operation, the sharpening angle will change (it increases), and the clearance angle will decrease (they are adjacent), but the cutting angle remains unchanged .

An increase in the clearance angle leads to the need to apply more effort in work , and this leads to an increase in cutting force, a greater load on the jointing knife and its heating . A poorly sharpened edge does not cut, but is pressed into the material and tears it.

Therefore, timely sharpening of the jointing knife is necessary to reduce processing costs, improve quality and ensure long-term operation of the tool.

How is sharpening done?

First, we inspect each jointing knife. We check its evenness in length, wear and linearity of the cutting edge.
We determine the minimum height for a given set of jointing knives, and install it in the cutter head, keeping parallel . Their smallest height on a simple machine is 18.5 mm , and on a machine with a hydraulic clamp - 21.5 mm , otherwise the strength of the knife in the head is not guaranteed. Carbide plates must be at least 4 mm .
We install the head with knives on the sharpening machine and align the back surface parallel to the plane of the sharpening wheel. The grinding wheel and the shaft on which it is located must be balanced and free from runout , cracks and other damage. Sharpening occurs by moving the circle along the length of the blade and changing the height above the blade being sharpened.
When sharpening the rear corners of a tool for conventional knife heads and those with a hydraulic clamp, keep in mind that it is related to the cutting angle and, by increasing one, decrease the other. And vice versa. By making the cutting angle smaller, you will increase the clearance angle. To increase the strength of the cutting edge, you can give it a larger angle , that is, “fill up” it. The chamfer is no more than 0.1 -0.5 mm .
If you have carbide inserts, then when sharpening them, increase the clearance angle by 5-10 degrees so that the stone does not touch the steel base.
Grinding of the cutting edges of jointing knives can be done on surface grinding machines.

THIS IS INTERESTING: How to clean a copper-nickel alloy coin

Professional sharpening center "TochkaZatochki"

offers forging, geometry correction and sharpening of jointing knives or cutting a new profile on them.
Timely maintenance of jointing knives will increase its service life.

About TochkaSharpening

Source: https://tochkazatochki.com.ua/zatochka-fugovalnyh-nozhej/

What is the sharpening angle of knives for a planer?

Special machines are used for sharpening knives of planer and jointer types. The work can be done with your own hands; the machine can be assembled independently if necessary. Sharpening is carried out according to certain rules; several options are used. You need to be careful and not violate the technology.

Methods for sharpening a jointer knife.

Otherwise, knives for planers, jointers and planers will be poorly processed and will not be able to fully perform their functions. In addition to special equipment, sharpening stones can be used for sharpening, but a small sharpening machine that has cooling is best suited for the job.

Preparatory work

Anyone who has a plane or jointer faces the problem of sharpening knives. It is expensive to constantly buy new ones, especially since knives can be easily sharpened with your own hands using special machines or sharpening stones.

If the jointer is used frequently, like other woodworking equipment, then it will be inconvenient to constantly send knives to the workshop for sharpening. It is better to assemble the machine yourself. To ensure that the jointer is always in working order, it is recommended to sharpen it at home. The easiest way to do this is with a regular sharpener.

You only need to take a sharpener with low speed, its quality should be high. Water cooling must be available.

Scheme of the sharpening angle of a jointer knife.

You can also use a sharpening stone, but it must first be leveled with a special device. Usually it comes complete with a small sharpening machine, so there is no need to additionally look for such devices. After the editing is completed, it is necessary to smooth the stone; a block is used for this. Sharpening a jointer knife without this step will be problematic.

What to do next? You need to set the angle of inclination. A special screw will allow you to correctly secure the blade relative to the position of the sharpening stone. Using this screw, you can subsequently set any angle of inclination of the knife.

Next, take the holder that comes with the machine. A jointing knife is installed in it. Experts advise starting sharpening knives whose width is at least 13 mm .

The length is not critical; if necessary, the knife holder can be rearranged to any position.

The knife must be securely fastened in the holder, otherwise sharpening will be carried out skewed, and this will worsen the quality of the jointer. How to properly secure a knife in a holder? While holding the blade in the desired position, tighten the clamping screws until they stop.

To control the sharpening angle, you must use a marker; it marks the sharpened chamfer of the knife. It is with this simple method that you can easily monitor the quality and progress of work. The sharpening will be correct if the corner of the knife touches the stone.

The stone must be rotated manually to determine if further adjustment is necessary.

Sharpening process and operating rules

Scheme of a machine for sharpening knives.

The holder moves to the right and left, movements are made relative to the sharpening stone. The blade should not be allowed to go beyond the edge. It is best to immediately install the holder 12 mm from the edge of the working circle. If sharpening is carried out, water cooling must be supplied. You will have to add water to the tank, you need to make sure that it does not run out. It is necessary to ensure that water does not accumulate on the floor near your feet. This is done for security reasons.

When performing work, you must ensure that the stone remains clean at all times, as it gets dirty quite quickly. A special whetstone is used for cleaning; it is recommended to carry out this procedure frequently, since only clean stones can be used for sharpening. The choice of stone itself depends on what kind of knives are used. Today, manufacturers produce jointing knives from soft or hard tool steel, so working conditions will vary.

Sharpening takes approximately 20 minutes, then fine-tuning is done. A special paste is used for this. After polishing, there should be no burrs left on the surface, otherwise the jointing knife will not be ready for use. The test is simple to carry out; a finished knife with excellent sharpening should easily and evenly cut a sheet of paper while hanging, leaving a neat cut.

How to make a machine with your own hands?

Scheme of sharpening a knife on a machine.

To sharpen a jointer knife, you need to use special sharpening machines. This is especially important when jointers, planers and other woodworking equipment are used frequently. The sharpening machine is compact in size and can be installed even in a garage or small shed on a summer cottage. Before starting assembly, you must prepare the appropriate tools that will be used during assembly of the sharpening machine:

the table on which the work will be carried out;
faceplate;
vacuum cleaner;
engine;
casing for the machine.

You need to start assembling the machine by finding a suitable faceplate. It is one of the most important parts for a sharpening machine. All jointer knives are quite narrow, so they can only be sharpened using a suitable type of faceplate.

Then the sharpening work will be high-quality, safe, and fast. The faceplate takes up the bulk of the cost of all equipment. Making a sharpening machine yourself is more profitable; you don’t need expensive parts for it.

Manufacturing will be quite justified if you have to frequently carry out woodworking.

You need to buy new faceplates; it is recommended to take American or German-made elements. They have the highest quality, and the cost fluctuates around 25,000 rubles. Next, you need to choose a motor for the future sharpening machine, it is best to take a 1-1.5 kW motor, you can even use a used element. Motors from old washing machines are excellent for the machine, but first you need to make sure the engine is working.

The motor is mounted under the tabletop, the faceplate is mounted to the moving part.

It is imperative to provide a button to turn the machine on/off. It should be located within reach of your hand. The faceplate is covered on top with a casing, which is made in the form of a square. One corner of the casing must be cut off, since from this side the jointing knives will be sharpened with your own hands.

A hole is made in the lower part of the tabletop; it will be intended for a vacuum cleaner pipe, with the help of which all contaminants that arise during sharpening will be removed.

In addition to sharpening jointing knives, a similar machine can be used for other work, for example, for processing ax blades, saws and other tools used in the garden.

Sharpening jointing knives can be done using various methods. Special sharpening stones are suitable for this. However, you can assemble a compact sharpening machine yourself. It will be used to sharpen a variety of tools including saws and axes.

The quality of planing and proper working stability of the knife depend mainly on its sharpening: on the condition of the cutting edge (blade) of the knife and the cutting angle.

Mossy, roughness, and unevenness on the planed planes of the material are caused solely by these two factors: Knives with a dull blade do not cut, but break, grind the fibers, which wrinkle, bend and create unnecessary resistance to the cutter.

To avoid this, it is necessary to sharpen the knives carefully, trying to obtain perfectly flat edges that intersect at a given angle.

Source: https://crast.ru/instrumenty/kakoj-ugol-zatochki-nozhej-dlja-strogalnogo-stanka