DIY circular disc knife instructions. DIY circular saw knife

Want to create a unique knife? Do you need a wood chisel or a sharp blade for hunting? Do it yourself good product more than real. The main thing is to have the skill of working with metal and know what you want.

Making a knife: where to start?

Prepare everything first necessary details and tools, put them in one place. Decide exactly what material you will use. If you need a sharp and durable product, make a knife from a saw.

Take the blank. A wood or metal saw blade is best suited for this purpose. As a material for making a handle for a blade, use wood (any one you wish), textolite, or plexiglass.

What tools are needed in the knife making process?

To get started and make a knife from a metal saw, you will need:

file;
electric drill;
marker;
ruler;
sandpaper;
surface polishing paste;
copper or aluminum for rivets.

How to make a blank?

Let's figure out how to make a knife from a saw. Prepare a metal sheet for making a blade. Draw a blank of the future tool on it, using a marker for this purpose.

Remember that a knife is considered a bladed weapon if the length of the blade exceeds 2/3 of the total length of the product. If you incorrectly construct a knife from a saw and it is regarded as a bladed weapon, expect punishment.

Having outlined the outline of the future product, start cutting out the shape. It is important to draw the shape so that cutting part of the future product is located in the area of the saw teeth. Due to the alignment of the saw, if you make a butt in this place, you will have to do additional work to grind down the bulge.

What to consider when getting started

Don't start sharpening your knife without practicing. Take an ordinary piece of metal and try to process it. Damaging a piece of hardware is not as scary as losing it good preparation. You must not only regulate the pressure when turning, but also monitor the temperature so as not to overheat the iron. Heat not only spoils the appearance of the metal. Even if it does not change in appearance, its structure may be seriously damaged: the metal will become much softer and more fragile. A knife made from low-quality metal will have to be sharpened more often.

To check if the iron has started to overheat, drop a couple of drops of water on the workpiece. If it evaporates immediately, quickly cool the workpiece for the future blade. To avoid possible troubles associated with overheating of the metal, place a container of water near the machine and cool it periodically future knife from a saw.

Working with a workpiece

Having formed the basis of the future knife, proceed to the most important and difficult stage of the work - removing the slopes. The bevel is a surface on a knife that gradually tapers towards the blade. The purpose of the knife directly determines the angle and width of the bevels. Therefore, choose the average value if you want to get out of the saw.

Before starting work on the machine, draw the expected slopes on metal sheet using a marker for this. Grind carefully, slowly, so as not to spoil the future knife. It is recommended, as in the previous step, to practice on a spare part. The slopes should be symmetrical and lie at the same angle on both sides. In this case, the blade should not be sharpened: leave an indent of approximately 0.25 mm.

To sharpen the blade, use sandpaper of 8-10 hardness number for such purposes. It is better to sharpen a knife from a metal saw on a wooden block. To prepare a makeshift sharpener, take a block and glue sandpaper to it.

Using coarse sandpaper, you will give the blade the necessary sharpness, and using a finer sandpaper, you will polish the metal blade completely.

At the final stage of processing, polish the blade. Same wooden block cover with felt or leather, rub and polish until you achieve the desired effect.

How to make a knife handle

The easiest way is to glue a handle from two cut and prepared pieces of wood or plexiglass. It is much easier to make than attaching it to the tail of a knife. Naturally, you can choose a simple option and wrap the handle with electrical tape, but why try so hard to end up ruining the aesthetic appearance of the knife?

And now comes the most crucial stage of work. Since you will have to drill in the shank of the knife, the blade can easily burst. Therefore, be vigilant and careful.

Steel is a hard, but at the same time brittle material. If the pressure is evenly distributed when the saw is in operation, it is almost impossible to break it. But with spot drilling, the pressure increases and the metal can easily crack. Therefore, it is better to drill a hole at low machine speeds and do not forget to add oil to the drilling site. In this case, a screwdriver is an ideal tool for accomplishing this goal, since it has fewer revolutions, and the possibility of breaking the part is not so high.

After completing the previous step and making holes in the handle, drill the same holes in the halves of the handle. Make a copper or aluminum rivet. For insurance, you can glue the area where the rivet will be located with glue, but it is better if you have epoxy resin.

Is it possible to simplify the process?

Craftsmen say that the hole can be made without the use of drilling tools. The blade together with the shank is covered with a layer of varnish. Where there should be a hole, you need to clean the surface of varnish. You should place the knife from the wood saw into the electrolyte solution and lower the wire with negative charge, and connect the positive one to a power source, which can be used as a regular battery.

As a result of such an impact, you will get a hole in the metal, although it will not be perfectly round, but you definitely won’t be able to damage the blade in this way.

Other part processing methods

If for some reason you can’t make a knife out of it, no required material- replace it. Well suited for blade making car spring, the metal of which is softer than that of a saw. To process such a workpiece, you do not have to use a sharpener, but you will need a metal saw to cut out the shape of the blade. Since metal is easier to process, the edges of the workpiece can be adjusted with a file. It will take longer to make a knife this way, because each stage of processing involves manual work.

Making a knife from a saw - labor-intensive process, but the result is worth it. By making a knife from a saw with your own hands, you will receive a high-quality and unique blade.

First cutting tools, made by man, were made of stone. Ancestors modern knives were very fragile and required a lot of time and labor to manufacture. The metal blade is devoid of these main disadvantages. Steel is relatively easy to process and has good physical characteristics.

A knife made by yourself is the pride of the owner. At self-production those characteristics that are necessary are selected. First of all, this is the shape of the blade and handle. The highest quality blades, such as damask steel or Damascus steel, are made by forging. The blade material has the necessary hardness and carbon content.

But forging requires certain tools and skills. What should you do if you want to make your own unique blade, but only have a minimal set of tools at hand? In this case, you should pay attention to a circular saw as a blank for the blade. The metal from which the canvas is made circular saw It lends itself well to hardening and has the necessary elasticity, so the saw will be the optimal workpiece for making a knife with your own hands. A homemade knife made from a circular saw holds an edge well, does not break, and can easily compete with industrial knives.

Creating a knife layout

The first step is to create a model of the future knife from a saw. At this stage of work, you can decide on the shape of the blade of the future blade and the shape of the handle. The layout is best made from thick cardboard or thin plywood. You can also use thick plastic. A rigid pattern will allow you to understand how a knife from a circular saw will lie in your hand and how convenient it will be to use.

When making a layout, it is important to adhere to the following rules:

Right angles must be avoided. A right angle is a place of stress concentration. The blade of the knife most often breaks or cracks in this place.
The shape of the blade must be chosen based on the purpose of the future knife. The most versatile forms are with straight or descending butt. Such a blade can cut and stab equally well.
The dimensions of the layout must correspond to the size of the circular saw blade.

When making a model, you should also remember that a knife can be classified as a bladed weapon. It all depends on the shape and size. Manufacturing and possession of bladed weapons is criminally punishable. Therefore, in order not to fall under the article of the criminal code, it is necessary to create a layout that complies with the following rules:

The length of the blade or cutting part should not exceed 9 centimeters. Exceeding this length even by 1 mm will allow you to classify a homemade blade as a bladed weapon.
A knife with a blade thickness of more than 2.6 mm is also a bladed weapon. This parameter can be neglected, since the thickness of the saw blade is usually 2 mm.
Hardness should not be more than 42 units. This parameter relates to hardening, so we also skip it at the stage of making the pattern.
The handle should have a limiter that protrudes beyond its limits by no more than half a centimeter. If there is no limiter, then the sub-finger recess should be less than 4 mm deep.

Once a layout that satisfies the letter of the law and personal preferences has been drawn, you can proceed to transfer the layout to the saw blade. The pattern is applied to the saw blade and outlined with a marker. It's best to use a fine marker. Thin line will allow you to cut the workpiece more accurately and avoid unnecessary processing of the workpiece with a file.

Cutting and primary processing of the workpiece

The fastest way to saw a workpiece is with a grinder with a thin metal cutting disc. If it is not possible to use an angle grinder, you can use hand hacksaw on metal. It is important to correctly install the file into the hacksaw. The teeth of the saw should be directed forward and the hacksaw should cut while moving away from you.

First, the approximate shape of the knife is cut out using straight cuts. Then the bends are cut out. The easiest way to cut them is with several oblique cuts converging at one point. It is important to leave an allowance of 2-3 millimeters to the drawn outline. This is due to the fact that when using a grinder, the metal at the cutting site overheats. By grinding off 2–3 mm using a file and sandpaper, you can remove the overheated edge of the metal.

Giving the workpiece its final shape

The rough workpiece is brought to its final shape using a file or emery. To avoid overheating of the future knife from the saw, when processing it with sandpaper, it is necessary to periodically lower it into a container of water. This will allow the workpiece to cool. When processing a workpiece with a file, no additional cooling is required. The most optimal way would be to roughly process the workpiece on sandpaper, and then fine-tune it with a file.

During final processing, you should Special attention pay attention to the smoothness of the bends. It is important to ensure that the bend is smooth, without depressions or bulges. Miniature depressions can be easily checked with a file. To do this, use a marker to paint over the end of the workpiece being checked. Next, apply a file with light pressure along the workpiece along the entire bend. There are depressions in the places where the marker trace remains.

Processing continues until not a single depression remains.

Next, the workpiece is cleared of burrs and sanded using sandpaper. You can start with 60 grit and finish with 320 grit. The workpiece will still be subjected to heat treatment, so finishing the blade will be polished later.

Shank drilling

The handle on the shank can be secured with rivets or glue. The most reliable option for attaching the handle is to use rivets. To install them, you need to make holes in the shank. The holes are marked on the shank so that they are located approximately in the middle of the future handle. To prevent the drill from slipping on initial stage drilling - punching holes.

Due to the fact that the circular saw is made of alloy tool steel, it will not be so easy to drill. Ordinary metal drills will not last long here.

Drilling should be done with cobalt drills or a ceramic drill with a pobedite tip.

During the drilling process, it is important to add oil to the drilling area and not allow the drill to overheat.

Drilling through hardened steel is quite a difficult task. Therefore, it is possible to produce holes in the shank using an electrochemical method. To do this, attach a wire to the workpiece, then completely cover the shank bitumen mastic or plasticine. In places of future holes protective layer scratch down to bare metal. Next, prepare a saturated solution table salt, into which the blade shank with a wire and an unnecessary metal plate, also with a wire, are lowered. Both wires connect to the battery or car charger. A “plus” is applied to the future knife from a circular saw, and a “minus” is applied to the plate. The etching process is accompanied by the release of gas. In 30–50 minutes the holes will be ready.

Forming the cutting edge

Before you start forming cutting edge, it is necessary to carry out preparatory work. It consists of applying markings on the edge of the workpiece. The markings are placed exactly in the center and serve as a guide for making a symmetrical descent.

To do this, paint over the edge that will be cutting with a marker and, using a drill equal in thickness to the workpiece, scratch the markings. The drill has a conical sharpening. Therefore, if you place the drill and the workpiece on the same plane, the tip of the drill will be exactly in the middle.

Then, using a coarse file, you can begin shaping the cutting edge. If you do not have the proper skill to create a smooth edge, you can use simple device. It consists of a base, an angle and a guide with a platform for sandpaper. 180-grit sandpaper is glued onto the platform with the guide. Several holes must be pre-drilled vertically one above the other in the corner. The knife is fixed flat on the base and the guide is inserted into the hole at a height so that the angle between the plane of the base and the platform with sandpaper is the same as that chosen for forming the slopes. A universal angle is from 22 to 30 degrees.

Having made an even descent to the middle of the thickness of the workpiece, turn the knife over, then make the same descent on back side. Using such a simple device, you can easily form an even blade.

Thus, a finished blade with a given sharpening angle is obtained. But at this stage the blade is only conditionally ready. It does not have the necessary hardening to confidently hold an edge. And also it has not undergone a tempering procedure to reduce fragility. Essentially, this is a semi-finished knife from a saw, which you can already use, but it’s better to take a few more steps.

Hardening

Heat treatment will give the knife the necessary hardness; it will not become dull during use.

To harden the knife from the saw, it is necessary to heat it to a temperature of 750–920 degrees. If you do not reach this temperature, the steel will not be hardened, and if it is heated too much, the blade will be too brittle.

At home, it is not possible to determine the exact temperature. However, there is a way out. A simple magnet is suitable for temperature control. As soon as the blade blank stops being magnetic, it is heated to the required temperature.

After the temperature of the workpiece has reached the required limits, it must be kept in this state for approximately 1-1.5 minutes for every 1 mm of thickness. In the case of a homemade knife from a saw, the holding time for hardening is 3–5 minutes. It would be enough. Next, the workpiece is lowered into vegetable or machine oil preheated to 50 degrees. This procedure should be performed carefully. Oil vapors can ignite from a hot workpiece, so you should have a fire extinguisher on hand.

A little about the hardening forge. If it is not possible to use industrial equipment, then you can make a forge yourself. To do this, it is necessary to build a fire of such a size that it is possible to evenly heat the workpiece. Next, as the firewood burns and coals appear, a homemade knife is placed on them. Can be used as blacksmith bellows household hair dryer or a pump for inflating mattresses.

Vacation

After hardening, the blade must be released. This procedure is carried out with the aim of reducing fragility, as well as giving the saw blade high elasticity. To temper, the blade is cleaned with sandpaper to remove scale formed during the hardening process and placed in a regular oven preheated to 190 degrees. There the blade is kept for an hour, then the oven heating is turned off.

The knife should cool smoothly to room temperature.

After this procedure, the workpiece has the necessary hardness and elasticity.

Sawing out the handle blank and preparing for gluing

To finish working with the knife, you need to make a handle. There may be various variations materials used as handles. The most popular material is wood. The wooden handle is impregnated linseed oil to prevent the harmful effects of moisture on it.

Select a flat plank from the wood of your favorite species. The thickness of the board should be at least half a centimeter for convenience. A thick board can be sawn lengthwise. Using the knife blank as a template, markings are applied to the board, including holes for rivets. For a good fit of the future handle to the shank, it is necessary to remove the contact plane using sandpaper.

Forming the upper part of the handle

The upper part of the handle is prepared in advance for the reason that after gluing the handle to the shank, processing the upper part will be difficult. Also, during the processing process, you can scratch the blade, which is extremely undesirable. Holes for rivets are drilled according to the markings made during the preparation process. A rod of suitable diameter is inserted into them. It allows you to firmly connect both parts of the workpiece and will not allow them to move during processing.

Forming occurs using files and sandpaper. At this stage, it is important to remember the permissible dimensions of the limiter and finger recess.

The final processing is carried out using 800-grit sandpaper. Before gluing, all parts must be thoroughly degreased. This can be done with acetone or solvent. Once the degreaser has dried, glue or epoxy can be applied.

Manufacturing of rivets

The adhesive attachment of the handle to the shank is not reliable. To avoid breaking the handle, the wooden plates must be fastened with rivets. The rivets are made of metal that is not subject to corrosion. These can be alloys of non-ferrous metals or stainless steel. You can also use a copper or brass tube as rivets.

A blank for the future riveting is sawn off from a rod of suitable length. It should be 2–3 millimeters longer than the thickness of the handle. Holding the rivet in a vice, use a hammer to flare one end. It should look like a mushroom at one end of the rod. Next, the rivet, pre-lubricated epoxy glue, is inserted into the holes in the handle and is also flared on the other side of the handle. To flare a rivet made from a tube, it is best to use a ball from a bearing.

Giving the handle the desired shape

After the glue has dried, begin processing the handle. First, using a needle file, grind off the protruding parts of the riveting. Then the piece of wood is shaped using a coarse rasp. First, the profile of the knife handle is formed. Grind down the wood until the metal of the shank appears. Then the sharp corners are ground down and the handle is given a shape that fits well in the hand.

Sanding and varnishing a knife handle

Final sanding is done using sandpaper. Gradually increasing the grain size, it is necessary to remove all rough marks from paper of a larger grain size. It is enough to complete the process of sanding the knife handle with 600 grit paper. The last stage in the manufacture of the handle there will be its impregnation.

There are several ways to impregnate a handle to better preserve it. This is oil impregnation, wax impregnation or varnish coating.

Each method has its own advantages and disadvantages. For example, wax must first be melted by heating it, and heating has a detrimental effect on the strength of the glue that glues the handle. Oils must be updated periodically. And the varnish serves only the function of surface protection.

The final feature when making a knife from a circular saw will be its final sharpening. The best way to do this is to use sanding block made from a wooden plank. Sandpaper of 1000, 1500 and 2000 grit is glued onto smooth boards, one grit on each side. A piece of leather is also glued to the board for straightening the sharpening. With a little practice, and also gaining skill, you can sharpen the knife so that it will cut paper by weight and shave hair.

So, with a minimum of tools and skill, but with the necessary knowledge, you can make an excellent knife from a circular saw. The characteristics of a homemade knife from a circular saw are often higher than store-bought analogues in the budget segment. Is there still space left on the saw blade after making one knife? We should make another knife!

By making a knife from a saw with your own hands, you can get at your disposal a cutting device whose performance characteristics are much better than those of factory analogues. When making a knife with your own hands, it is given exactly the shape that suits the master most. Factory-made knives are beautiful, but not always reliable. There is no guarantee that they will not fail at the most crucial moment.

A homemade knife made from a disk, a hacksaw for wood, or a saw for metal will last for many years, regardless of the conditions of storage and use. Let's look at how to make a knife from metal parts factory production, what is needed for this and what special attention should be paid to.

The raw material for making a homemade knife can be any new or old cutting part made of hardened steel. It is better to use as a preparation cutting discs for metal, hand-made and pendulum saws. A good option is old chainsaw. From its chain you can forge and sharpen a blade, according to its quality and appearance not inferior to the famous Damascus steel.

In order to make a knife with your own hands, you will need the following equipment and materials:

Bulgarian;
grinder;
electric drill;
ruler;
hammer;
sandpaper;
whetstones for sharpening;
files;
core;
epoxy adhesive;
copper wire;
marker;
bucket with water.

Separately, you need to think about the issue with the handle. The finished product should fit comfortably in your hand.

To make a handle it is better to use:

non-ferrous metal (copper, bronze, brass, silver);
wood (oak, alder, birch);
organic glass (plexiglass, polycarbonate).

The raw materials for the handle must be intact, without traces of cracks, rot or other defects.

Rules for working with metal

In order for the blade to be strong and elastic, during its manufacture it is necessary to follow the rules of working with metal. They are as follows:

The workpieces must not have visible or hidden damage. Before making a knife, the workpieces must be inspected and tapped. A solid part sounds loud, but a defective part sounds dull.
When designing the shape of the blade, angles must be avoided. In such places the steel can break. All transitions must be smooth, without kinks. The cuts of the butt, handle and fuse must be ground at right angles.
When sawing and sharpening, do not overheat the steel. This leads to a decrease in its strength. An overheated blade becomes brittle or soft. During processing, the workpiece must be constantly cooled by completely immersing it in a bucket of cold water.
When making a knife from a saw blade, you need to remember that this product has already gone through a hardening cycle. Factory saws are designed to work with the hardest alloys. If you do not overheat the canvas during the turning and finishing process, then you will not have to harden it.

The blade shank should not be made too thin. It is this part of the product that will bear the heaviest load.

Making a knife from canvas

If the canvas is large and does not have much wear, then several blades can be made from it for various purposes. The effort and time spent are worth it.

knife from circular saw do it yourself in the following sequence:

A pattern is applied to the canvas, and the contours of the blade are outlined. Scratches or dotted lines. This way the design will not be erased when cutting out the workpiece and adjusting it to fit the required form.
Workpieces are cut from a circular saw blade. To do this, it is better to use a grinder with a metal disc. You should leave a margin of 2 mm from the contour. This is necessary in order to remove the material burned by the grinder. If you don’t have a grinder at hand, you can sharpen the workpiece using a vice, a hammer and a chisel or a hacksaw.
On sharpening machine everything that is unnecessary is sanded off. You will have to spend a lot of time on this process so as not to overheat the steel. To prevent this, the workpiece must be regularly immersed in water until it cools completely.
The blade is outlined. Here you need to be careful to maintain the contour of the knife, not burn it and maintain an angle of 20º.
All straight sections are leveled. This is convenient to do by applying the workpiece to the side grinding wheel. The transitions are given a rounded shape.
The part is cleared of burrs. The blade is ground and polished. To do this, several interchangeable wheels are used on a grinding machine.

Separately, we should dwell on how the handle is made. If wood is used, then a monolithic fragment is taken, in which a longitudinal cut is made and through holes. After this, the blank is placed on the blade, and holes for fastening are marked in it. The handle is fixed to the blade using rivets or bolts with nuts. In case of bolted connection The heads of the hardware are recessed into the wood and filled with epoxy glue.

When the handle is assembled from plastic, 2 overlays are used, which must be symmetrical. To give the knife originality, the plastic linings are painted with inside. You can make cavities in the overlays that can be filled with jewelry, items made of non-ferrous and precious metals, small compasses and photographs.

After fastening to the blade, the handles are ground until they acquire the required shape and smoothness.

Knife from a chainsaw chain

Saw chains are made of high-quality alloy, which perfectly withstands prolonged friction and high temperature. The blade manufacturing process is long and labor-intensive, but the result is a beautiful, unique and very durable knife. To work you will need a heavy anvil, a barbecue and charcoal. To make it easier to handle a hot workpiece, you need to purchase blacksmith tongs.

Making a blade from a chainsaw chain should be carried out in the following sequence:

Prepare clothes and gloves made of thick fabric and a protective mask. Pour charcoal into the fireplace and light it with a special liquid.
Fold the workpiece from a single piece of chain. In the place where the handle will be, you can add several pieces of chain. It should be remembered that the result of the work should be a single monolithic product. The handle for the knife is not made separately.
Place the workpiece on the coals. Provide air flow to raise the temperature. Wait until the steel turns dark red. In this state, it becomes forgeable without losing its quality characteristics.
Remove the hot chain from the fire and place it on the anvil. Flatten it with several strong blows so that the links melt together, turning into a single monolithic part.
Step by step, by heating the workpiece in the oven and giving it the desired shape with a hammer, forge a knife with a designated handle and blade. After the workpiece has cooled, sharpen and polish it.
Harden the product. To do this, you need to heat it red-hot again and lower it into cold water. After this, you can finish the knife. For this purpose, acid and an engraving machine are used. The finished blade is polished again and washed in a warm soapy solution.

When making a blade yourself, you must adhere to certain parameters in order to ready product did not fall under the category of bladed weapons.

: manufacturing features

Want to create a unique knife? Do you need a wood chisel or a sharp blade for hunting? Making a good product with your own hands is more than possible. Main. have the skill to work with metal and know what you want.

Making a knife: where to start?

First, prepare all the necessary parts and tools, put them in one place. DIY saw blade knife. Do-it-yourself fultang knife. How to drill a bellows saw. Decide exactly what material you will use. If you need a sharp and durable product, make a knife from a saw.

Take the blank. A wood or metal saw blade is best suited for this purpose. As a material for making a handle for a blade, use wood (any one you wish), textolite, or plexiglass.

What tools are needed in the knife making process?

To get started and make a knife from saws for metal, you will need:

file;
electric sharpener;
electric drill;
marker;
ruler;
sandpaper;
surface polishing paste;
copper or aluminum for rivets.

How to make a blank?

Let's figure out how to make a knife from a saw. Prepare a metal sheet for making a blade. Draw a blank of the future tool on it, using a marker for this purpose.

Remember that a knife is considered a bladed weapon if the length of the blade exceeds 2/3 of the total length of the product. If you design a knife incorrectly from... saws and it will be regarded as a bladed weapon - expect punishment.

Having outlined the outline of the future product, start cutting out the shape. It is important to draw the shape so that the cutting part of the future product is located in the area of the saw teeth. Due to the alignment of the saw, if you make a butt in this place, you will have to do additional work to grind down the bulge.

What to consider when getting started

Don't start sharpening your knife without practicing. Take an ordinary piece of metal and try to process it. Ruining a piece of hardware is not as bad as losing a good piece of equipment. You must not only regulate the pressure when turning, but also monitor the temperature so as not to overheat the iron. High temperature not only spoils the appearance of the metal. Even if it does not change in appearance, its structure may be seriously damaged: the metal will become much softer and more fragile. A circular saw blade made from low-quality metal will have to be sharpened more often.

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Working with a workpiece

Before starting to work on the machine, draw the expected slopes on the metal sheet using a marker. Grind carefully, slowly, so as not to spoil the future knife. It is recommended, as in the previous step, to practice on a spare part. The slopes should be symmetrical and lie at the same angle on both sides. In this case, the blade should not be sharpened: leave an indent of approximately 0.25 mm.

To sharpen the blade, use sandpaper. For such purposes, sandpaper of 8-10 hardness is best suited. It is better to sharpen a knife from a metal saw on a wooden block. To prepare a makeshift sharpener, take a block and glue sandpaper to it.

Using coarse sandpaper, you will give the blade the necessary sharpness, and using a finer sandpaper, you will polish the metal blade completely.

At the final stage of processing, polish the blade. Cover the same wooden block with felt or leather, rub it with GOI paste and polish until you achieve the desired effect.

How to make a knife handle

The easiest way is to glue a handle from two cut and prepared pieces of wood or plexiglass. It is much easier to make than attaching it to the tail of a knife. How to make a knife from a saw with your own hands? Features of making tourist knives from a circular saw blade and a metal saw. Naturally, you can choose a simple option and wrap the handle with electrical tape, but why try so hard to end up ruining the aesthetic appearance of the knife?

And now comes the most crucial stage of work. Since you will have to drill in the shank of the knife, the blade can easily burst. Therefore, be vigilant and careful.

Steel. hard, but at the same time brittle material. If the pressure is evenly distributed when the saw is in operation, it is almost impossible to break it. But with spot drilling, the pressure increases and the metal can easily crack. Therefore, it is better to drill a hole at low machine speeds and do not forget to add oil to the drilling site. Circular table from a hand-held circular saw with your own hands. In this case, a screwdriver. An ideal tool for achieving the goal, since it has fewer revolutions, the possibility of part failure is not so high.

Is it possible to simplify the process?

Craftsmen say that the hole can be made without the use of drilling tools. The blade together with the shank is covered with a layer of varnish. Where there should be a hole, you need to clean the surface of varnish. You should place a knife from a wood saw in an electrolyte solution and lower a wire with a negative charge into the container with the workpiece, and connect the positive one to a power source, which can be used as a regular battery.

As a result of such an impact, you will get a hole in the metal, although it will not be perfectly round, but you definitely won’t be able to damage the blade in this way.

Other part processing methods

If for some reason you are unable to make a knife from a metal saw, you do not have the necessary material. replace it. A car spring, the metal of which is softer than that of a saw, is well suited for making a blade. To process such a workpiece, you do not have to use a sharpener, but you will need a metal saw to cut out the shape of the blade. Since metal is easier to process, the edges of the workpiece can be adjusted with a file. It will take longer to make a knife this way, because each stage of processing involves manual work.

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Handicraft knife from a circular saw blade, hacksaw blade on wood or from a saw on metal will serve for many years, regardless of the conditions of use and storage. Let's talk about how to make a knife from factory-made steel elements, what is required for this and what you need to pay close attention to. We will also tell you how to make handicraft cutters for wood carving enthusiasts.

Working tools and materials

The raw material for creating a handicraft knife can be any used or new cutting component made of hardened steel. As a semi-finished product, it is advisable to use saw wheels for metal, concrete, pendulum end saw wheels and hand saws. Decent material would be used gasoline saw. From its chain it is possible to forge and make a blade, which in its properties and appearance will be no worse than the legendary Damascus blades.

To create a knife from a circular disk with your own hands, you will need the following equipment and materials:

angle grinder;
emery machine;
electric drill;
ruler;
hammer;
sandpaper;
whetstones for sharpening;
files;
center punch;
epoxy;
copper wire;
felt-tip pen;
container with water.

Additionally, you need to think about the issue with the pen. The manufactured item should fit comfortably in the palm of your hand.

To create a handle, it is preferable to use:

non-ferrous alloys (silver, brass, bronze, copper);
wood (birch, alder, oak);
plexiglass (polycarbonate, plexiglass).

The material for the handle must be solid, without cracking, rottenness or other defects.

Metal handling techniques

To keep the blade strong and tight, During its creation, you must adhere to the rules for handling iron.

The semi-finished product should not have noticeable or subtle defects. Before starting work, the workpieces must be examined and tapped. A complete element sounds sonorous, while a defective element sounds muffled.
When creating a design and drawing of a cutting component configuration, you need to avoid corners. In such areas, steel can break. All transitions must be made smooth, without sharp turns. The bevels of the butt, fuse and handle must be ground at an angle of 90 degrees.
When cutting and processing, do not allow the metal to overheat. This leads to a decrease in strength. An “overcooked” blade becomes fragile or soft. During processing, the part must be cooled regularly by completely immersing it in a container of cold water.
When creating a knife from a saw blade, you must not forget that this element has already undergone a hardening procedure. Factory saws are designed to work with very strong alloys. If you do not heat the product excessively during turning and processing, then it will not need to be hardened.

The tail part of the blade does not need to be made excessively thin. After all, specifically on this area the knife will apply the main load.

Making a knife

If saw blade If it is large and not very worn, then it can be used to make several blades for various purposes. The effort is worth it.

A knife from a circular saw is made in a certain order.

A template is placed on the disk and the outline of the blade is outlined. Scratches or dotted lines are applied on top of the marker using a center punch. After this, the picture will not disappear during the process of cutting out the part and adjusting it to the required configuration.
Let's start cutting out the blade. For this purpose, it is worth using an angle grinder with a disc for iron. It is necessary to cut with a margin of 2 millimeters from the line. This is necessary in order to then grind off the material burned through the angle grinder. If you don’t have an angle grinder at hand, you can cut out the rough part using a vice, chisel and hammer or a hacksaw.

The sanding machine removes everything unnecessary. This must be done carefully and slowly, trying not to overheat the metal. To prevent this from happening, the part must be periodically dipped in water until completely cooled.
When getting closer to the outline of the future blade, you need to be more careful so as not to lose the outline of the knife, not to burn it, and to maintain an angle of 20 degrees.
All smooth areas are smoothed out. This can be done easily by placing the part against the side area of the emery stone. Transitions are made round.
The workpiece is cleaned of burrs. The cutting blade is grinded and polished. To do this, several different stones are used on an emery machine.

Blade hardening

Connect the largest burner to gas stove to the maximum. This is not enough to heat the blade to 800 degrees Celsius, so in addition use blowtorch. Such heating will demagnetize the part. Please note that the hardening temperature varies for various types become.

After the part has warmed up to such an extent that the magnet stops sticking to it, keep it in the heat for another minute to make sure that it has warmed up evenly. Dip the part in sunflower oil, heated to approximately 55 degrees, for 60 seconds.

Wipe the oil off the blade and place it in an oven preheated to 275 degrees for one hour. The part will become dark during the process, but 120 grit sandpaper will handle this.

Making a handle

Separately, it is necessary to focus on how the handle is made. If wood is used, then take whole piece, in which a longitudinal slot and through holes are made. Then the block is strung on a blade, and holes for fasteners are marked in it. The handle is fixed to the blade using screws and nuts. In the screw-mounted version, the hardware heads are recessed into the wood structure and filled with epoxy.

When the handle is assembled from plastic, 2 symmetrical plates are used. We form the outline of the handle. Armed with files of various grain sizes, we begin shaping the contour of the handle. Reduce the roughness little by little as you build. In the end, sandpaper replaces the file for support. Through it, the handle is completely formed; it must be made completely smooth. Finally use 600 grit sandpaper.

The knife is almost ready. We impregnate the handle (if it is wooden) with linseed oil or similar solutions to protect it from dampness.

Knife sharpening

If you want to get it for real sharp knife, use water stone for sharpening. As with the sanding option, the grain size water stone it is necessary to gradually reduce it, bringing the canvas to perfection. Do not forget to constantly wet the stone so that it is cleaned of iron dust.

We create homemade cutters for wood carving

Wood cutters are hand tools, used for artistic carving wood, the cost of which not everyone can afford. As a result, many people want to make them themselves.

The cutter has a steel cutting component and a wooden handle in its structure. To make such a knife, you will need a basic set of tools.

Tools and accessories:

emery machine;
angle grinder for cutting workpieces;
jigsaw;
circular cutter;
sandpaper.

In addition, you will need the material itself, in particular carbon or alloy steel to create a cutting tool.

Source materials:

round block of wood with a 25 mm cross-section;
strip of steel (0.6-0.8 mm thick);
drills (for thread);
disks for circular cutter.

A consumable is also an abrasive disc, which will be used to grind the cutter. Used circular saw discs are useful as a key material for creating cutters.

A step-by-step guide to creating a wood cutter

Creation of semi-finished products for a cutter blade

Elements for the cutter blade are made from used circular disk. To do this, the disk is cut according to the markings using an angle grinder into several rectangular strips measuring approximately 20x80 millimeters. Each stripe is a cutter in the future.

We give an outline to the main incisors

Each cutter must be machined to the required configuration. The process can be implemented in 2 ways: by sharpening on a machine and by forging. Forging is necessary to form a deflection, and turning is necessary to form a single blade configuration.

Sharpening

To sharpen the blade, you need an emery machine with a small-grain stone. Sharpening is performed at an angle of approximately 45 degrees, and the length of the pointed part is somewhere around 20-35 millimeters, taking into account the total length of the cutter. The blade itself can be sharpened either by hand or using a tool.

Creating a handle for comfortable carving

To make using the tool extremely comfortable, you will need to make a wooden handle. The handle is made using special equipment or by hand, by planing and subsequent grinding using sandpaper.