How to sharpen a hacksaw on wood with a grinder • AURAMM.RU

Making a machine for sharpening chainsaw chains with your own hands is no more difficult than assembling a homemade grinder or band sawmill. However, such homemade products are less popular. This is probably due to their narrow specialization, as well as the presence of many alternative options using fairly simple devices that allow you to sharpen a chain with the same quality and in almost the same time. Most often, homemade machines for sharpening saw chains are designed by those who live “on the ground”, far from cities, and often use a chainsaw both for collecting firewood and for home construction.

Purpose and design of a hacksaw for wood

Depending on the type of use, hacksaws are divided into types:

Small ones, mainly used for trimming branches and cutting small-diameter trees, usually young trees that grow where they don’t belong.
Medium hacksaws, which are used for fruit trees in adulthood (pear, apple or plum trees and the like), large beams 10-40 cm.
Large tools are used for cutting large trees, sleepers and similar building materials, but no more than 40-50 cm in diameter or on the larger side, otherwise there will not be enough blade.

I tested various sharpening methods in my own experience. In the garage there was an old saw that had not been sharpened for probably twenty years. It served as a testing ground for me. I won’t say that the saw is like new, but it can work in the country without any problems.

There is nothing difficult about sharpening saws yourself; you just need to get your hands used to it. My father once taught me how to sharpen saws, but he did everything in a simple way, without fixing the blade in a vice. This is the wrong approach. You should always clamp the saw in a vice. Firstly, it’s safer, and secondly, it’s easier.

Advice from professionals

The new chain must be run in so that the mating parts get used to it. At low speeds for a minute, the lubricant will fill the channels on the tire.

Particular attention should be paid to chain tension. Weak tension leads to collapse and the load increases, which can lead to link rupture.

Monitor the level of oil intended for lubrication of the chain, bar, and sprockets. The lack of lubricant leads to increased wear of the chainsaw elements.

After work, clean and generously lubricate the chain with clean oil.

Purpose and structure of the saw

A hand hacksaw is used for sawing various wood materials. It is a blade with teeth at the bottom. On one side, the tool is equipped with a handle, with which the master holds it during sawing work. The quality of the handle determines the convenience and comfort of working with the saw.

The number of manufacturers of wood saws is quite large, but they all differ not only in names, but also in quality. All of them are intended for sawing wood, chipboard, logs, laminate, and tree trunks. Hacksaws are divided into such types as: classic, round, bow, as well as with a back and a reward. The thickness of the blade plays an important role when choosing a tool. After all, a thin blade can break during sawing wood, and a thick blade is quite difficult to work with.

Important! Wood saws should be sharpened periodically. Sharpened files include blades that have not gone through the hardening stage. If the blade links are hardened, then it is impossible to sharpen them.

Using a grinder

This method requires control over the sharpness of the teeth and the presence of certain skills. The drive sprocket must be lubricated with machine oil, and the tire must be periodically moved to the reverse position.

All manipulations are carried out directly on the chainsaw. You will need a special disk for working with metal, with a circle thickness of 2.5 mm. It is desirable that it is not new and has rounded edges.

Why sharpen a hacksaw on wood?

Anyone who cuts firewood and trims trees definitely cannot do without a hacksaw for wood processing. A hacksaw's set teeth with sharpened edges help you work with wood and carefully saw off the necessary parts from wood. The sharper the teeth on the blade, the better and smoother the saw cuts. At the same time, thanks to the handle, it is more convenient for the home craftsman to control the process, and the hacksaw , with a properly sharpened blade, will last a long time and safely.

READ Sharpening Wood Hacksaw Saws

Used almost every season, this tool eventually becomes unusable. The teeth on the blade become dull and rounded, working with it becomes overwhelming and takes a lot of time and effort from the worker. In order for the tool to cut well, not get stuck in the wood, and not dull faster (if the tooth is not sharpened, the dulling process is accelerated), you should sharpen it in a timely manner, while simultaneously checking the alignment of the teeth.

Direct sharpening

To return the teeth to their former sharpness, a whetstone used to sharpen kitchen knives is not suitable. You need a special tool: a file with a triangular cross-section or a needle file. It is very good if you have several files with different sections and cut pitches: this will allow you to process each tooth perfectly.

Hold the file by the handle with one hand and place the other on the end of the tool.
Decide on the sharpening angle. Usually it is 15-30 °. You can determine it by eye, with a protractor, or use simple equipment. Shape a block of wood into an isosceles triangle with angles of 90, 60 and 30 degrees, then use it as a measuring stick.
Sharpen the left cutting edges of the even (farthest from you) teeth. Each requires an equal number of file passes to remove the same amount of chips. The pressure on the tool should be equal.
Turn the hacksaw over to the other side, then sharpen the left edges of the even-numbered teeth again.
Sharpen the tops of the teeth.
Do not forget to control the sharpening angle using a whetstone.

The process seems very simple, albeit monotonous, but there are a number of nuances:

The saw must be secured very tightly in the vise for safety reasons. Do not be afraid to damage the metal of the blade with strong compression.
The work area should be well lit to make it easier to determine angles and sharpness.
The metal is removed only when the file moves away from the carpenter.
The more dull the saw, the larger the notches on the file can be, but to fine-tune the teeth you should always use a file with small notches.
When fixing the tool in a vice, push it between the jaws as deep as possible. To prevent the hacksaw from swinging outward, only the teeth should remain.
During the work process, there will inevitably be burrs on the sharpened edges. To remove them, just rub the metal with a fine-grained abrasive (sandpaper).
To check the quality, you need to carefully examine the teeth in the light. They should shine.

Now a little theory

Elements of working chain links can be classified as follows:

Spatula;
Depth stop;
Base.

The working edges are located on the tooth blades. If sharpening is carried out according to the passport data, then you can achieve good results in sawing wood. Remember, the higher the sharpening angle, the easier it will be to cut soft wood. When sawing denser or frozen lumber, the sharpening angle is reduced. This approach will, in some cases, reduce end runout and make the chain softer in operation; in other cases, you can increase the productivity of the saw - in general, there is a different approach for each wood!

Purchasing a factory machine for sharpening chains for a private individual often becomes an unprofitable investment from the economic side. That's why you have to invent and chemistry the machine yourself.

Sharpening the saw

Everyone knows how to use it, but few people know how to sharpen a hacksaw on wood at home correctly. Therefore, it is worth taking a look at the process of sharpening a hand saw for woodworking and why it is needed.

Before you start sharpening the saw, you need to firmly and securely fix it in a vice, but with the teeth set apart.

How to sharpen a hacksaw with a grinder

For your information. It is advisable to use special smooth jaws for a vice, rubber gaskets or thin bars to prevent damage to the blade with standard pointed jaws.

When sharpening, you can use both needle files and small triangular files with a fine notch to grind down the teeth.

It is necessary to take the file with one hand by the handle, and with the other by the tip of the working part. In this case, it is necessary to monitor the saw tooth during the process so that the file does not jump out of your hands and your hand does not get on the edge. Just in case, you should wear work gloves with a rubberized surface on the palm.
Next, you need to set the angle by eye at which the hacksaw will be sharpened. Typically this angle is between 15 and 30 degrees. You can also use a special whetstone with angles of 15, 30 and 60 degrees for a more precise sharpening process.
Each back-and-forth motion of the file must be performed with constant pressure and the same number of repetitions on each section of the blade.
Sharpening is carried out both on one side of the blade and on the other.

READ How to Cut a 45 Degree Angle with a Grinder

Important! When sharpening a tool, safety precautions must be observed to prevent injury to the limbs. Otherwise, sharpening will turn into a visit to the doctor.

We make a stationary machine

None of the machines can do without a base (bed). The old base from a bench vice can serve as a base. We drill holes in the workpiece for fastening to the workbench. Select the diameter of the holes to suit your taste.

A rotating bar with clamps is attached to the base, on which the chain will be put on and fixed when sharpening. The last element in this design, as you guessed, will be the sharpening device on the bracket.

Be sure to remember about adjusting the tilt of both the bracket and the electric drive of the sharpening device.

In our case, we use a 220 volt electric motor with a power of 85W as a drive. A grinder disc with a diameter of 125mm can serve as a working stone for sharpening. We connect a power cable with a cross section of 3*2.5mm to the engine.

At the bottom of the rotary rail we attach a scale with degrees of rotation, a reference point from 0 to 35º both left and right. If you wish, you can mount buttons to turn the drive on and off. For convenience, we mount a support handle on the engine body. It will allow you to raise and lower the drive during operation.

For full-fledged work, equip it with an LED flashlight, this will illuminate the sharpening work area and spark a protective screen from possible abrasive getting into your eyes, if you decide to work without safety glasses. So, in principle, the machine for sharpening the chain is ready. Watch the video review below.

The disadvantages of such equipment include:

Requires 220V power supply;
Dimensions;
More difficult to manufacture than the mobile version.

General requirements for sharpening

The following requirements apply to manual sharpening of hacksaw teeth:

for work it is necessary to use high-quality files (needles);
files should only be used for saw processing;
Each tooth should have an equal number of passes, regardless of the shape of the tooth;
it is forbidden to change the angle of the file and rotate it during the sharpening process;
the file must be moved only in one direction, away from you;
the edge of the tooth should be matte; if there is gloss, sharpening must be repeated;
when working, the blade must be securely fixed in a vice, while the teeth should protrude slightly and be located at the same height;
the workplace should be well lit.

How to know when it's time to sharpen a disc

Cutting discs used for processing wood and wood-based materials experience wear and tear over time, reducing their productivity. To restore the effectiveness of the cutting tool, you will need to sharpen the teeth. You can find out that the teeth on the disk need to be sharpened by the following factors:

To cut wood, it is necessary to apply force to press the tool against the workpiece being cut.
There is smoke coming from under the protective casing.
The protective casing becomes overheated
There are signs of a burning smell. This means that the teeth do not saw the wood, but cut it

Using a faulty attachment on a power tool leads to a decrease in work productivity, and also increases the likelihood of early failure of the power tool and the attachment itself. A decrease in performance increases the load on the electric motor, which eventually begins to overheat and fails.

How to sharpen a hacksaw with your own hands

How to sharpen a hacksaw yourself if the need arises?

First you need to decide what material the work cloth is made of.

Ordinary steel can be corrected independently, but teeth with pobeditovy tips can only be processed on specialized industrial machines.

Some craftsmen, at their own peril and risk, undertake to sharpen a hacksaw using a grinder - but this is an unreliable and dangerous method.

To tidy up an ordinary manual hacksaw for wood at home, you will need to determine the shape of the teeth, prepare everything you need, and be sure to follow safety precautions.

Scope of application

Due to their unusual appearance, knives with serrated sharpening have found their application in various fields:

Hunting and fishing

Special teeth on the serrator help to quickly clean the fish. This blade is also convenient for cutting up an animal carcass. When fishing, serrated knives can be used to cut nets and ropes.

Rescue work

Among rescue team workers, tactical knives are not the least important item. Serrated blades are excellent for cutting ropes, clothing or belts. For a secure grip, such knives are specially made with a handle made of heat-resistant plastic. In addition, tactical rescue blades may have special hooks, a sling cutter and a glass breaker.

Tourism and sports

Diving enthusiasts and tourists use a serrated blade to cut ropes and ropes. Many models are in great demand among this segment of the population.

Kitchen

Professional chefs have long appreciated the quality of the serrated cut. You can use it to deal with bread or tough meat.

Sharpening instructions

First you need to prepare the equipment necessary for work:

To make sharpening better, you can prepare additional tools:

A device that allows you to mount the saw at the required angle.
Locksmith's hammer.

Sharpening a hand saw with a grinder in five minutes.

Checking completed work

You can evaluate the correctness of sharpened blades as follows:

Inspection. The edges of the blade must be symmetrical, without chips or chips.
We pass a small thin piece of plastic with equal force along different parts of the blade and then inspect the mark. When the same depth is formed on all parts of the mark, the skate is sharpened correctly and efficiently.
When exhibiting on the ice, skates must stand straight, without bending to the side. This indicates good sharpening.
The owner must put on shoes, go out onto the ice surface and check how the blade behaves during shocks. If there is no slippage, the skates are ready for play.

Read also: What should a figure skater’s weight and height be?

Necessary tool

To quickly and efficiently sharpen a hacksaw for wood, you should prepare a set of equipment for setting the teeth and sharpening. Required:

Workbench;
bench vice;
pliers;
whetstone;
sandpaper;
measuring tool: protractor and caliper;
plumber's hammer;
equipment that allows you to secure the blade at angles of 90° and 45°.
cross-section in the form of a triangle;
cross-section in the form of a rhombus;
flat ;
files.

The notch must be intact and not clogged with metal dust. If you sharpen the hacksaw on time and correctly, working with it will be easy and convenient. Such a tool will last much longer, delighting its owner with an even and precise cut and high quality surface of the wood cut.

If you find an error, please select a piece of text and press CtrlEnter.

How to sharpen a chainsaw chain with your own hands

Who knows that the saw chain used in chainsaws requires repeated sharpening, alas, not everyone knows how to do this correctly. Finding that the saw requires sharpening the chain is actually simple; for this purpose you need to look at the sawdust; if it consists of small dust, it means that the tool needs to be sharpened. If sharpening is impossible, it is worth changing it to a new one.

READ How to clean an anchor on an angle grinder

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The use of an unsharpened chain leads to overheating of the motor and the formation of scoring on the cylinder.

Let's look at the main methods by which, of course, you can freely sharpen a chain on a chainsaw.

Principle

Fasten the blade between the wooden plates, with the teeth extending 15-20 mm above them. Please note that each type of saw has its own rules for sharpening:

Sharpening a hand saw for wood. using a grinder. with your own hands.

for transverse blades - the installation angle is 45º, a triangular isosceles type of file is used. Sharpen at an angle of approximately 70˚, starting from the left edges, then turn the blade over and do the same with the remaining ones;

How to sharpen a cross-type hand saw for wood

for longitudinal or mixed type, install the canvas vertically. Use a finely cut diamond file or a needle file. The movements should be parallel to the table, and the process itself is similar to the previous one.

Tip: you can remove burrs on the back of the teeth with an emery block or a file with a velvet notch. Please note that a properly sharpened edge does not shine in the light.

Direct sharpening

Hold the file by the handle with one hand and place the other on the end of the tool.
Decide on the sharpening angle. Usually it is 15-30 °. You can determine it by eye, with a protractor, or use simple equipment. Shape a block of wood into an isosceles triangle with angles of 90, 60 and 30 degrees, then use it as a measuring stick.
Sharpen the left cutting edges of the even (farthest from you) teeth. Each requires an equal number of file passes to remove the same amount of chips. The pressure on the tool should be equal.
Turn the hacksaw over to the other side, then sharpen the left edges of the even-numbered teeth again.
Sharpen the tops of the teeth.
Do not forget to control the sharpening angle using a whetstone.

The process seems very simple, albeit monotonous, but there are a number of nuances:

The saw must be secured very tightly in the vise for safety reasons. Do not be afraid to damage the metal of the blade with strong compression.
The work area should be well lit to make it easier to determine angles and sharpness.
The metal is removed only when the file moves away from the carpenter.
The more dull the saw, the larger the notches on the file can be, but to fine-tune the teeth you should always use a file with small notches.
When fixing the tool in a vice, push it between the jaws as deep as possible. To prevent the hacksaw from swinging outward, only the teeth should remain.
During the work process, there will inevitably be burrs on the sharpened edges. To remove them, just rub the metal with a fine-grained abrasive (sandpaper).
To check the quality, you need to carefully examine the teeth in the light. They should shine.

Sources:

https://profistroy74.ru/masteru/kak-natochit-nozhovku-po-derevu-bolgarkoj.html

Ways to increase the service life of saw blades

The process of forming a new cutting edge is labor-intensive and time-consuming. Therefore, it is recommended to fulfill a number of conditions to increase the service life of the disk.

First of all, you should read the manufacturer's recommendations. They indicate the number of revolutions (maximum and minimum) for various types of processed materials. For metal this parameter should be less than for wood.

Hard solders have a long service life. However, they are more likely to chip and break off. Alternative soft is practically not susceptible to such defects. But its service life is shorter than that of a solid one.

The appearance of roughness on the cutting surface is not allowed. In the future, they can lead to chips and cracks.

The video shows an example of a do-it-yourself disc sharpening machine: