How To Sharpen A Hacksaw On Wood With A File Video
Why sharpen and when
With constant use, the teeth lose their sharpness, the cutting edges wear out, deteriorating the quality of the cut and increasing the time to complete the task.
Buying a new one will not correct the situation for a long time, and it will take no more than half an hour to restore the old canvas.
Timely sharpening of the hacksaw will restore the cutting ability of the cutters, and will allow you to always have a working tool at hand.
It is worth correcting the sharpness of the cutting edges at the first signs of wear, which may touch local areas and the entire working surface.
The dimensions of the cutter set also change, and this leads to jamming during operation.
General requirements for sharpening
Not every garage or workshop has a special machine for sharpening hacksaws, but it does not hurt to tweak the tool with your own hands.
There are, of course, exceptions. hardened teeth cannot be sharpened.
Diamond drills and other tricks won’t help.
Such a saw has an increased resource and cannot be repaired, but replaced with a new one.
It is easy to identify hardened steel. it is black with a blue tint.
A hacksaw sharpener is usually a grinder or a file and file.
A prerequisite is to first perform the correct setting of the teeth, because the thickness of the hacksaw blade affects the cutting width, so the edges must be bent to the required width.
Sharpening a hacksaw with a sander or an angle grinder requires skill.
Sharpening a hacksaw mechanically is much safer and easier.
Before starting work, prepare a vise or clamp, a vernier caliper, a hammer and other necessary tools:
Cross-cut saws sharpen at an angle of 60 degrees with a triangular fine file.
Longitudinal with an angle of less than 60 degrees. a large file or a diamond file with a fine abrasive is used.
For the mixed type, you will need a coarse cut file or a fine cut diamond file.
For this operation, a special device for sharpening is useful. a wooden block with a cut out socket to protect hands from cuts.
To sharpen a hacksaw using a grinder, you need a cutting wheel with a thickness of 1.2 to 1.4 mm, a diameter of 115 or 125 mm. The angle grinder should be adjustable between 5,000 and 8,000 rpm. Installing protection is a prerequisite for using this method. Typically, a homemade transparent plastic visor is used.
Hacksaw sharpening technology for wood
Correct sharpening of the hacksaw should maintain the working tooth profile.
It is determined by the following parameters:
Step and height; taper angle; bending radius.
The sharpening angle can be set in the range of 30 to 60 degrees, and depends on the material.
So, for soft wood species, the optimal indicator will be 50 degrees.
It is important to properly fix the blade in a vice. do not clamp it tightly, as the steel will vibrate under the file.
Using a workbench and a clamp, you can conveniently fix the hacksaw.
Sharpening is done by alternating double-sided sharpening. first, one row is passed along the left edges of all teeth.
Then the tool is turned over, and the pass along the right half of the cutters is repeated.
The one-sided method for dressing hand saws is not used. it is applicable only in relation to some types of knives.
Requirements for setting the teeth of the hacksaw
Bending the cutters through one on both sides of the blade, observe a certain value, which can be set on a homemade device.
The width of the set depends on the type of wood.
Soft and damp wood requires a higher incline angle than dry wood.
Generally, hand tools work effectively with an average of 0.2-0.3mm.
At the same time, the total value should not exceed the width of the web.
In addition, the bend pattern is the same on each side.
The hacksaw set is checked visually or with a vernier caliper.
Pay attention to the size of the tooth. the height of the incisor is especially important.
How to sharpen a hacksaw
The question "How to sharpen a hacksaw with your own hands?" does not lose its relevance, despite the presence of a modern power tool in every home.
The saw is needed on the farm, irreplaceable on vacation, used for cutting boards, logs, chipboard.
It is also necessary for construction, carpentry and installation work; in the garden and workshop.
In the city, in the country or in the garage. everyone has this time-tested tool.
Checking the height of the hacksaw teeth
Check the height of the teeth before sharpening the tool.
To do this, lay a sheet of plain paper on a hard and even surface, and press the cutters tightly until a clear print is obtained.
If there are teeth protruding from the general row, traces from them will be reflected in the print.
If there are higher teeth, they are carefully cut with a flat file to the general level.
Purpose and device
Two-handed and one-handed saws are used for sawing. The former are quite rare. Electrical devices are more commonly used. One-handed are often used.
The blade is a knife with a large number of teeth. On one side it ends with a handle, which is held when performing operations.
The hacksaw can be used when working with laminate, chipboard, for sawing logs, tree trunks, carpentry operations, and so on.
Long blades with large teeth are used for fast work. For neat. with small ones. For cutting along. with inclined teeth, for cross. with straight teeth.
A machine is used for sharpening hacksaws.
To sharpen a hacksaw with a file correctly, the handle is clamped with the right hand, and the end is held with the left. The tool is directed at the teeth of the blade at an angle (as is the bevel). The pressure should be even, smooth and only in a certain direction (usually away from yourself).
If possible, it is advisable to ensure that the removed metal layer is of the same thickness. To do this, it is recommended to move the tool an equal number of times and with equal pressure. This will save the height, steps and angles of the teeth after processing.
It is necessary to remove burrs appearing on the edges of the tooth with a damp whetstone or by means of a file with a velvet notch. If you leave them, they will reduce the sharpness of the teeth and crumble when cutting wood materials, which will worsen the quality of the manipulations.
When sharpening is over, check the sharpness of the teeth by sawing a piece of wood. If, when inspecting the saw blade, the cutters do not shine, then all actions have been done efficiently and the hacksaw is ready for use.
Grandfather’s way of sharpening
How to sharpen a hacksaw on wood: technique of work
A hand saw or a hacksaw is often used to work with wood. It is a practical and inexpensive tool. The article describes how to sharpen a hacksaw, provides information about the device and purpose of the saw.
A wood hacksaw is intended for sawing logs, boards, chipboard and other wood materials. In particular, this tool can come in handy when laying laminate flooring, making various wooden structures, pruning branches, etc.
All wood saws are divided into three types according to the size of the teeth:
|Tooth type||Interdental distance, mm|
I must say that the smaller the teeth, the better the cut is. Another important parameter is their shape. For example, with a level position, a hacksaw can be used to cross-cut logs, but if the teeth are tilted, then the tool can be used for ripping.
Therefore, it is desirable to have several hacksaws of different types, which will allow you to efficiently perform various types of work. In addition, the price of this tool is quite affordable.
Existing tooth shapes
However, in any case, as mentioned above, any saw will efficiently and effectively cut wood only if it is sharp. Therefore, periodically, sharpening of hand saws for wood must be performed.
Otherwise, you will have to spend a lot of time and effort on sawing. over, the saw must be properly sharpened, otherwise it will be difficult to cut at right angles with its help. as a result of constant sideways movement, the blade will be clamped and jammed in the cut.
How to sharpen a hacksaw on wood yourself
For sawing building materials from wood, as well as trees, a tool such as a hand saw is used. Despite the fact that electric and even gasoline saws, jigsaws and circular saws have been developed for a long time, the hand saw for wood remains an indispensable assistant in the arsenal of every master. With the active use of this tool, it becomes necessary to sharpen the teeth. How to sharpen a hacksaw on wood yourself at home, we will consider in the material.
How to sharpen a hacksaw on wood
To sharpen a hacksaw on wood, the blade should be fixed in a vice in the same way. Needle files or triangular files with a fine notch are used to sharpen the saw links. Not many people know how to properly sharpen a file on wood, so you should pay as much attention as possible to this process.
- Initially, you need to pick up a file. A file with a fine cut should be used, which should be held with one hand by the handle and the other by the tip of the instrument.
- The sharpening angle is determined, which usually ranges from 15 to 30 degrees. The angle is usually determined by eye, but if it is difficult to do this, then you can use special home-made devices, for example, a wooden block. To do this, the bar is turned until it has the shape of a right-angled triangle with angles of 30 and 60 degrees.
- The most important thing when working with a file is pressure on it. To ensure uniform sharpening, the same number of file passes must be made over each tooth. With experience, you will learn how to remove the top layer of metal evenly.
- Using the prepared device, the sharpening angles are controlled. The process is carried out in the same way on the reverse side of the web.
Now you know how to properly sharpen the teeth of a hacksaw blade for wood. But the process does not end there, as it will be necessary to align the teeth in height. If they have different heights, the uniformity of the cut will be disturbed. If there are links that are higher than the rest, then their shortening is performed using the same file. The check is carried out using a sheet of paper, to which the blade should be applied with the teeth down. After that, the sizes are compared, and the shortening procedure is repeated.
Sharpening a hacksaw for wood begins with a procedure such as setting teeth. The setting of the hacksaw teeth is performed for such purposes as ensuring the free movement of the blade without jamming. The setting is the bending of the teeth in different directions, alternately, by one amount. This leads to the fact that the kerf width increases, which means that during the sawing process the chip removal process is accelerated.
The amount of tooth spread depends on the thickness of the blade, and is usually 1.5-2 mm. To bend the teeth by the same amount, you will need to use a special device. This device is a metal plate with a special slot. The blade is clamped in a vice so that the links protrude slightly. After that, the process of bending the teeth is carried out. Sharpened teeth must also be bent to the same distance.
Purpose and device of the saw
The hand saw 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 convenience and comfort of working with the saw depends on the quality of the handle.
The number of manufacturers of hacksaws for wood 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, as well as tree trunks. Hacksaws are subdivided into such types as: classic, circular, bow, as well as with butt and 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 it is quite difficult for thick ones to work.
Why and when to sharpen
The tool under consideration is subjected to various loads during operation, which leads to dulling of the teeth. If you cut with a saw that has dull teeth, the result will be much less effective than a sharp one. In addition, using a saw with blunted teeth is not recommended for the following reasons:
- Decreased tool performance. Not only the powers of the master will be spent, but also his time.
- Decreased accuracy of work. It is impossible to cut wood materials evenly with a blunt-toothed hacksaw, much less to do it neatly.
- Danger of using the tool. During work, the saw will get stuck, jammed, come off the mowing line of the cut, so such work can be dangerous for the master.
A sharp hacksaw is not only easier to work with, but also much safer. To determine that it is time to sharpen the saw blade for wood, you should pay attention to the following factors:
- The canvas emits a characteristic dull sound. If the master often uses a hacksaw, then it will not be difficult for him to determine such a sound.
- The tips of the teeth are rounded.
- Saw when trying to cut wood refuses to do its job.
These factors indicate that it is time to sharpen the hacksaw on wood with your own hands. But before you take up the file, you should determine whether these links are subject to sharpening.
How to sharpen a saw: practical recommendations
When carrying out work on sharpening a hacksaw, you should adhere to the following recommendations:
- The device is firmly fixed on the working surface in a vice.
- Providing good lighting for the workplace.
- To sharpen the links, files and needle files with various cuts are used. The smaller the notch, the better. It all depends on the degree of dullness of the teeth.
- Metal removal is carried out only when the file moves away from itself in one direction.
- After the work is done, you need to check the quality. To do this, look at each link in the light. If the tooth shines, then it is sharpened correctly, as in the photo below.
In conclusion, it should be noted that many craftsmen do not consider it necessary to sharpen a hacksaw. This is wrong, since the efficiency of the work depends on the quality of sharpening.