A jigsaw can cut any material – stone, metal, wood. Saw with electric drive makes straight, bevel and round cuts. How to learn to cut smoothly with a jigsaw?
Why does a jigsaw cut crookedly?
Initially, a jigsaw was intended for cutting out patterns and circles. The straight sawing function is not available on all models. The price of such a tool is many times higher.
Can be achieved straight cut and with a regular jigsaw. To do this, you should use a ruler, which should come with the kit. To make it easier to control the sawing process, you need to reduce the speed.
Beginning craftsmen often encounter a problem: when cutting, the jigsaw moves to the side, and the cut is made at an angle. To cope with this, you need to study in detail the process of correct and even cutting.
There are several reasons for an uneven saw blade:
- the saw is dull;
- too much pressure is used;
- There is a cross grain in the wood.
One of the reasons for a crooked cut may be that the material is too thick. Usually, thin wood cuts easier and easier. The jigsaw may have poor mechanics - in this case it needs to be changed. You can check the quality of the jigsaw by moving it from side to side. If it's loose, it's a cheap tool for rough work. To get an acceptable result, you should cut with a margin, and decorate the edges with a hand router.
Another effective method, how to learn to cut smoothly with a jigsaw - draw not one line on the workpiece, but two parallel ones. This way the cut will be smoother.
Straight cutting technique: nuances you need to know
To achieve an even cut, additional tools are used. Before you start sawing, you need to secure the material well. The work surface must be stable. Experts do not recommend sawing wood along the grain. It will be difficult to achieve an even cut. It is better to use a circular saw. If it is not there, you can use rip fence. One edge is fixed on the product, the second leans against the tool. This way the cut is evened out.
If you need to make a circle, first drill a small hole in the middle. A jigsaw is attached to it, moving along the contours of the marked lines. When a rectangle is required, the saw is directed forward, rounding the corners and then shaping them.
It is forbidden to put pressure on the saw - it can overheat and break. Many novice users try to guide its movements so that it cuts faster. This typical mistake masters If you run the saw for too long, the tool will become dull and begin to snag the wood.
To make the move easier, use machine oil. They lubricate the file with it. To avoid overheating, you should stop occasionally. After sawing, you need to clean the jigsaw and moisten it with oil.
Rules for smooth sawing with a jigsaw
- For a perfectly smooth saw, it is necessary to use a device with an increased frequency of blade movement. It is better to choose a large file. A board will serve as a guide. Pre-prepare 2 clamps with a workpiece and a guide. To ensure that the jigsaw is positioned freely, it is placed on a raised platform. Using a tape measure, measure the width of the material, draw marks, and make one line out of them using a ruler.
- The guide is placed a few centimeters from the cut. It is attached with clamps. A jigsaw is attached cutting part to the cutting line. Connect it to the guide and attach it with a clamp. You need to make sure that she doesn't move.
- The same manipulations are performed on the other side. To ensure that there are no defects left on the wood, you need to clamp lightly.
- The next stage is moving to the first clamp, checking its stability and clamping. After this, turn on the jigsaw, setting the highest speed. The number 2 is set on the pendulum. The file is installed along the cutting line. The guide is pressed against the side of the platform and sawing begins.
- By controlling the position of the platform, the tool is moved forward. When there is just a little left to the end, you need to support what you sawed off so that it does not break off. The cut pieces will be perfectly straight.
- To make the saw glide smoothly and easily, some people use a removable blade. She comes from different materials. It is fixed on the support sole of the saw. The bus and adapter provide straight cut.
- Some materials require additional cooling. When working with them, you need to keep a bowl of cool water near you. It can be installed on a support sole.
A jigsaw is a universal tool that is indispensable in the household. Knowledgeable people They say: skill in handling it comes with experience. The more you train, the better the result will be.
How to cut smoothly with a jigsaw? This question interests many, especially at a time when a person is engaged in construction. This tool helps you cope with a complex task. But what is it? In terms of appearance and main purpose, it is comparable to a saw that has an electric drive. In this case, you can cut various materials:
- Wood products.
- Metal constructions.
- Plastic.
- Tiles.
And it’s not that difficult to do any kind of work. According to the masters, the main thing is to create all the conditions to make it convenient to work. How to cut smoothly with a jigsaw? The first is to use only a flat and stable surface. The material to be cut must be firmly fixed, and a saw of the required sharpness and size must be selected.
This saw is considered unique because it can work on almost all materials. In addition, she not only does straight lines. With its help you can create curved cuts. But before you start the process, it’s worth understanding which jigsaws cut smoothly and efficiently.
Work system
To fully understand the process, you need to first prepare everything. Here's what you need if you're working on wood:
- Any piece of wood.
- Electric jigsaw.
- Personal protective equipment - glasses, gloves.
- Machine oil.
Requirements
The very first thing is to securely and firmly secure the material on which the work will be carried out. It also happens that an error occurs and the jigsaw begins to cut unevenly. It is worth finding out the reason, otherwise you will not be able to achieve the desired cut. This is the stability of the table, as well as the reliability of fastening the material. Making even cuts with such a tool is not so difficult, but if you choose the direction along the fibers, nothing will work. Although people with experience can cope even with such a task.
How to cut smoothly with a jigsaw? If such a need is required for a person without experience, then the following actions must be performed - this is a parallel emphasis. To do this, on one side it is attached to the jigsaw, and on the other side it is fixed to the edge of the tree. This is how you can make the cut smooth and free of fiber residue.
Everyone can find out the structure of this unit in the instructions. When purchasing, managers give a lot of recommendations. Each manufacturer includes instructions, this is no less helpful information, and it's worth studying. Everything should happen in stages; if questions arise, they need to be resolved, and not continue to work “at random.”
Making holes
How to cut smoothly with a jigsaw, for example, a hole? Often this is what you need to do. In order to install the jigsaw in the center of the future hole, a small hole is made, after which the cutting unit is inserted there. Then they simply walk along the marked line of the circle. The same is done rectangular shape(namely, you need to move the saw along the side of the rectangle). But the corners smoothly bend. Next you need to cut out the next side.
Another important point in the work is not to press too hard on the jigsaw. This condition is often violated by beginners, which leads to overheating and then breakdown. In addition, one saw should not be used constantly, otherwise it will become dull and snag the material being cut.
Durable materials cutting is not so easy. To make the procedure quick, machine oil is used. They provide lubrication during the process, and the work goes quickly. Low speed is another problem with such tools. The fact is that overheating occurs again. No one excluded safety precautions, and even at home you should not forget about glasses and gloves.
When all procedures are completed, it is worth wiping the equipment and lubricating it with machine oil. Installations with conventional and pendulum stroke are available on sale. The first option differs in that the movement occurs upward on any material. If there is a pendulum stroke and upward movement, an additional knife is thrown forward. This allows you to increase the work process without significantly wearing out the saw.
Features of the operation
How to cut smoothly with a jigsaw? Before starting work, you should find out the whole process, otherwise you will not be able to achieve the desired result. Often when working with any materials it is necessary to create a cut with maximum precision. An electric jigsaw will do the job.
Here's what you need for this:
- Material for work.
- Jigsaw.
- Guiding tools.
- Clamps.
- Pencil.
- Construction tape.
Let's get started
The movement of the cutting blade must occur precisely in order for the cut to be obtained as desired. It's good when the frequency of movement is high. To do this, take a saw of maximum width (this is suitable for wood). The main thing in this process is the use of a guide. A flat board or batten becomes the main assistant.
You can't do without clamps. They contain a workpiece and a guide. The material to be cut should be placed on a slight elevation. This helps keep the jigsaw from resting. After which the distance that should be cut is fixed. A tape measure is used for this. Afterwards the marks are applied using a pencil. Then, using any ruler, these marks are connected, and a cutting line is obtained.
What to do next?
Next you need to secure the guide in a certain place. Clamps help with this. Fixation is performed from the cutting line. After this, you need to position the electrical device with a saw to the cutting line. Now press the guide and also fix it; there should be no movement, but you shouldn’t press too hard either.
Then they move to the second side and also fix it. The level of fastening is maximum, but do not forget that some materials can be pressed through. When the whole process is completed, you need to move on to the first clamp. Install it correctly and clamp it. Only after this can you begin to make an even cut. Otherwise, you won't be able to do quality work.
Now you can turn on the jigsaw and begin the process itself. The speed is high, the pendulum stroke should be at unity. And the tool itself is placed so that the file is on the cutting line. Only after this will the work be completed efficiently, and the line itself will be smooth and impeccable.
Do not forget a single moment - if a person does not have experience, then any mistake becomes fatal. Especially when you need to cut parts, the number of which is limited. Experts recommend learning to perform all actions on any unnecessary material and only after that begin the main work.
What else do you need to know?
Any device has additional accessories. They allow you to make the whole process more precise and simplify things. It is believed that cutting plywood with a jigsaw is the simplest process, since the material has no large thickness. Sometimes you need to saw small parts. How to cut plywood smoothly with a jigsaw? This will be simplified if you have a special table. It mostly comes with this electric tool, although many people create it themselves after purchasing it.
The use of a clamp is always necessary. The same applies to the table - it is secured using such an installation. But the cutting process occurs in the opposite direction. But the movement is produced not by electrical equipment, but by a part. Experts believe that this way the lines are accurate and correct.
Many beginners may encounter such a problem as saw clamping. But how to deal with this? Many people often use a replacement plate. It refers to additional tools. At the same time, the material used to create such a component is very different. And it is fixed to the base of the electrical installation. And with the use of such components as a guide bar and an adapter, an accurate line is obtained.
Sometimes, when sawing, the material begins to heat up, and the process will simply slow down. In such a situation, the material will need to be cooled. To do this, use a simple cold water. It is fixed on the support sole. People often have questions about how to evenly cut laminate flooring with a jigsaw. Everyone knows that it is a tree, for this reason the same principle applies to it. In the process of laying laminate boards, it is precisely this tool that helps make the process easier.
It is better to make the cut from the back side, and use the smallest saw for this. This helps to avoid deformation along the cut line. It is with metal parts that heating occurs. Here you need cold liquid, and for the tool - machine oil. To create a cutting line of any shape, take the most thin saw. Another addition is the circle cutter. Before installing it, make a hole in the center.
Curved cut
When creating a curved cut, a problem arises - the material begins to move. Therefore, before starting work, the table is well secured (and the part itself too).
How to cut chipboard evenly with a jigsaw?
This question interests everyone. It is important to carefully go around the corners, but you can make a circle in the part only after all other cuts are completed. For such work, a main saw is used. It's quite enough. Do not use force on the tool. Working with such a tool should take place in several stages:
- When working with hard materials, use machine oil and coolant.
- When working at high speeds, you need to rest, otherwise the equipment will overheat and fail.
- Compliance with safety precautions, use of gloves and glasses.
- At the end of work, the device is wiped and lubricated with oil.
There are also manual units. How to cut correctly and evenly with a hand jigsaw? It's easier because you can stop and make corrections, although many people think the opposite. In any case, a jigsaw is considered an indispensable piece of equipment for the home. Because it works on any surface and creates smooth cuts. If possible, you need to purchase it. It definitely won’t be superfluous in the household.
It is very difficult for beginners to understand how to saw with a hand jigsaw, since there are a huge number of nuances. The basics of doing the work are mastered quite easily and quickly, which allows you to make various decorative elements and furniture. Many people in the USSR were fond of sawing, and for them the industry produced special plywood blanks, albums with patterns for sawing, and various saws for jigsaws. So now find everything necessary tools, materials and patterns are not difficult. What is needed to organize a workplace, what tools and materials are needed and how to work with a jigsaw correctly will be discussed below.
Tool Details
A jigsaw is a tool that is designed for shaped (curvilinear) cutting wooden blanks. For sawing various elements For decoration, a manual jigsaw is used, since it is very difficult for an electric one to do delicate work. The hand tool has a steel frame in the shape of the letter “U”, the ends of which have clamps, and at one end there is a handle. Clamps are used to secure the saw blade and allow you to adjust the tension of the blade.
The clamps for fixing the blade can rotate, which allows you to change the direction of the cut. This is what allows you to cut out almost any complex pattern along complex trajectories. However, it is worth remembering that the canvas is very thin and can tear, so it is always necessary to have several dozen canvases in stock. It is worth remembering that the blades may differ in the size of the teeth, sharpening of the teeth, etc. At the moment, there are 2 main types of canvas:
- Straight. It is a smaller copy of a saw. It is used for making straight cuts and often for rough processing.
- Spiral fabric. It is used for finer processing, surface grinding, etc. This fabric is ideal for making circles and ovals.
Now that you have an idea about the jigsaw, you should start purchasing all necessary materials and tools.
Preparation of the workplace, tools and materials
The first thing to start with is the selection and acquisition of materials for work. For sawing various crafts plywood is usually used, but the workpiece must meet a number of requirements.
The first thing you should pay attention to is the thickness of the plywood sheet. For cutting out decorative elements hand tools You should use thin plywood (up to 15mm thick). It is easy to process by hand. It is worth noting that optimal thickness sheet size for working with hand tools is considered to be 4-6 mm. It is worth remembering that the thickness of the plywood blank may vary depending on what kind of decor you plan to get in the end. For example, thin plywood is suitable for making photo frames; for vases, medium-thick plywood should be used. When working electric jigsaw take thicker sheets.
In addition to the thickness of the plywood sheet, it is necessary to select the shade and pattern of the veneer. This is necessary if you plan finishing products with paints and varnishes.
The next important criteria are the moisture content of the workpiece and the sizing of the layers. Only dry plywood is suitable for the work. In addition, the layers of plywood should not be separated when processing the workpiece. In addition to the above, it is worth paying attention to appearance blanks. There should be no knots or stains on it. Plywood with straw admixtures is not suitable. The veneer must be firmly glued to the plywood. To determine the quality of gluing layers of plywood and veneer, the following experiment should be carried out: a strip of plywood 1-1.5 cm wide is sawed off with a regular hacksaw; if it does not delaminate, then such plywood is suitable for carving with a jigsaw.
Along with the purchase of material for cutting, they also purchase a jigsaw. It is recommended to purchase both a manual jigsaw and an electric one as they have different applications. If there is a clear idea of what work will be performed (fine or rough finish when making small souvenirs or furniture), then you can purchase a specific tool. For fine workmanship purchase a regular manual jigsaw. When choosing, you should pay attention to the material from which the frame, clamps and handle are made. Best material for the frame and clamps - durable steel (possibly stainless steel). The best material for a handle is wood. Over time, such a handle can be shaped to fit comfortably in the hand. Should be paid Special attention onto the clamps. They must be made of steel, not aluminum or silumin.
They allow you to fix the workpiece and avoid its displacement during operation, which will significantly reduce the likelihood of curved cut lines, and also allows you to avoid tearing the saw. Next, purchase copy paper and sheets with patterns. Using carbon paper, the pattern is transferred from the original sheet to the workpiece. If the master has a good eye and artistic education, then he can draw the pattern on the workpiece himself. It is best to use “TM” or “M” pencils for this; they are used to guide the drawing after carbon paper. Workplace equipment will also be required. For creating comfortable conditions work, you should get a table 1.5-0.6 meters. This surface size will allow you to conveniently position a workpiece of almost any size. It is recommended to purchase an electric burner, which is used to burn out the lines of the pattern. This will simplify the carving process and give the product a more expensive look (a beautiful black patina will form along the cutting lines).
But the most important consumables are canvases. Since breaking a saw while cutting is not easy, but very simple, it is therefore necessary to have a large supply of saws. So, on average, a more or less experienced craftsman uses about 40 files for one workpiece: 20 regular straight and 20 spiral.
Work process
They cut it out with a jigsaw on some kind of stand to make it smooth and easy.
Before using a jigsaw, a pattern should be applied to the workpiece. It can be transferred from a special album (you can look at flea markets for albums with cutting patterns from the times of the USSR), or you can draw it yourself. Another option is to print the pattern on a printer and then glue it onto the workpiece. Regardless of how the pattern is applied, you should paint over those areas that should not be cut. After this, the workpiece is placed on work surface using clamps and yews for fastening. On this preparatory stage The work is completed, then they begin cutting.
They start cutting out from the internal contours of the workpiece. This is due to the fact that plywood is a fragile material, and in the case when the outer contour is cut out first, there is a high probability of chipping the finished pattern. To start working in the internal contours of the workpiece, you should drill holes with a drill into which the file is inserted, after which it is fixed to the jigsaw. If the workpiece has more internal contours that need to be cut, you should drill required amount holes until the workpiece is secured. This will reduce operating time. When fixing the blade on a jigsaw, it should be secured so that there is no vibration of the blade during operation. The sawing process itself differs little from the work regular saw- The same forward movements. An important point When working, it is necessary to maintain an angle of 90° between the workpiece and the jigsaw file. If the cut is made at an angle, the blade may break. Such mistakes are often made by beginners, but there is nothing wrong with this - the canvas is quickly replaced.
Conclusion on the topic
Despite the fact that the sawing technology is simple, it is necessary to follow safety rules when working, since there is a high probability of cuts or chips getting into the eyes.
Crafts made using this technology will always be original, so you can make a huge number of different decorative and exclusive things - toys, boxes, frames, kitchen utensils etc.
A jigsaw is an electric saw that is an indispensable item in every home. With this tool you can cut metal constructions, wooden items, plastic and tiles. Unlike a standard saw, a jigsaw can be used to cut the most intricate figures– circles, triangles, stars, in general, almost everything you can imagine. However, with such extensive possibilities, a problem often arises in moving the jigsaw smoothly so that the resulting lines correspond to the planned ones. How to cut smoothly with a jigsaw? Let us help you figure this out.
In order to get started, it is necessary to carry out preliminary activities and prepare:
- gloves;
- protective glasses;
- machine oil;
- the material we will process;
- clamps guiding the tape measure;
- construction pencil;
- the jigsaw itself.
The sawing process is carried out as follows:
Some features of the process
Initially you need to select the right file for a jigsaw. The variety of files allows you to choose the option that will correspond to both the material of the original workpiece and the final desired result.
In general, a jigsaw can be either pendulum or conventional. In the second option, for an even cut, the blade must be moved clearly vertically, cutting the material upward. Due to the high speed generated, the blade wears out more slowly.
When working with a pendulum tool, the principle is essentially the same, only the preferred material for processing is soft wood or plastic, there may be difficulties with steel.
In order to make a straight cut, you need to choose a wide blade; it is better if the jigsaw has a “Smooth start” function, which will allow you to avoid sudden movements at the initial stage. If necessary, sawing round hole First you need to drill the original version, into which the necessary file is inserted. The cutting itself is carried out according to the markings. If the original version cannot be cut out, then it is required plunge cutting method. To do this, the jigsaw is tilted at an angle until it comes into contact with the material, this allows you to do through hole, and then do what is necessary according to the markings.
If you need frequent circular sawing, it is advisable to purchase additional device, called a circle cutter.
It is allowed to cut along the edge of the workpiece, but you must make sure that it is initially even, otherwise the jigsaw will cut crookedly. If the edge is uneven, then only correct marking can correct this.
When working with wooden sheets small thickness there is a risk of chipping. To prevent this, the sheet should be placed face down.
For smooth sawing panels exist special devices, so-called machines. They can be vertical or horizontal.
The names speak for themselves. In the first case, the panels are installed vertically, the beam mounted on the guides acts as a bracket. Possibility of turning it up to right angle allows you to saw off material in any plane. Horizontal option assumes the presence of a table for sawing, the mechanism itself and a carriage that ensures the movement of the file along.
Rules for straight cutting
Thus, in order to make a cut correctly and evenly, you must adhere to the following rules:
- Carefully select a file that is suitable for your source material.
- Prepare all necessary auxiliary items.
- Carefully secure the workpiece.
- Take into account the correct location of the workpiece so that you do not have to correct flaws - in some cases the blade is positioned front part down.
- Practice the technique of operating the device with the help of professionals or through a training video.
- Follow safety precautions carefully.
In fact, processing products with a jigsaw is not so difficult task, which any novice carpenter can do. Even if an even and neat cut does not work out right away, you should not despair: you need to soberly assess what nuances you may not have paid attention to. And you shouldn’t ignore the advice of professionals who can speed up the process of mastering the art of sawing with a jigsaw and reveal some secrets. Try and improve!
When sawing laminated chipboard jigsaw has to deal with the following problems:
- uneven cutting line
- chips on the surface of the chipboard
- non-perpendicularity of the end
To solve these problems, there are the following methods.
To ensure an even cutting line, it is recommended to use bimetallic files. They cut better and, therefore, the likelihood that the file will move to the side decreases. It is also recommended to use a file with set teeth ( T144DF), then the cut is as smooth as possible. The same file will provide an end strictly perpendicular to the surface due to its thickness.
To get a perfectly even cut, you can use clamps to attach it to the part to be cut. metal corner parallel to the cut line at some distance from it. For various models For jigsaws, this distance may be different, for example, for a jigsaw Makita 4329 it is equal to 37 mm
The disadvantage of this file is that it is too big size teeth, resulting in a lot of chipping. To avoid this, you can use a special anti-splinter liner and/or stick it on the chipboard along the cut line masking tape from the top side (or better from both). In this way you can achieve almost perfect quality I drank it away. If you are professionally engaged in the manufacture of furniture, then this method certainly will not work (insufficient quality and low productivity), but for homemade furniture will do just fine.
You can also use a file T318BF. It is specially designed for sawing laminated chipboards and provides a clean cut with virtually no chips. But unlike T144DF it is not so thick and its teeth are not so far apart, as a result of which there is a high probability that the file will move away and the cut will turn out uneven.
Home » Tools for working in the country.
An electric jigsaw is the most convenient and universal tool For complex work on wood. With its help you can produce artistic carving, preparing various parts for carpentry and solving other problems.
Operating procedure
To obtain best result work, you need to know how to cut correctly with a jigsaw.
- The material being processed must be securely fastened. Poor workpiece fastening is one of the main causes of errors when cutting. The jigsaw can jump off, go off the markings, or even go in an arc. By the way, if the jigsaw cuts crookedly, check whether the direction of the cut coincides with the direction of the fibers.
If this is the case, then it is better to make a cut circular saw.
- When it becomes necessary to make a cut on the inside of the workpiece, you should first drill a hole at the starting point.
- When working with the tool, do not use much force. An electric tool cuts wood quite well and without excessive pressure. If you apply serious force to advance the jigsaw, the saw and motor will become very hot and the risk of damage increases. Besides, overpressure - main reason chipped
- When cutting hardwood, it is advisable to add a little machine oil to the blade.
- Sometimes you have to work at low speeds. In this case, it is necessary to take frequent breaks from work, as the saw becomes very hot.
Accuracy problems
Let's look at how to cut smoothly with a jigsaw:
- The object to be processed must be securely fastened. Moreover, in such a way that it would be convenient to make the cut.
- In cases of particular uncertainty or for greater guarantee of accuracy, it makes sense to use guides. When making straight cuts, you can use it as a guide. wooden block, fixed along the marking. If the cut shape is complex, then the situation becomes more complicated. In this case, you can use patterns, if any, or you will have to reduce the speed of work by more carefully guiding the jigsaw.
- One of the options why a jigsaw cuts crookedly is problems with the saw. It may be dull or have chipped teeth. If you notice that the jigsaw literally turns itself wherever it likes, inspect the saw.
- Jigsaw failure. For example, if the motor runs jerkily, the likelihood of a crooked cut increases sharply. Likewise, other mechanism failures can lead to a decrease in accuracy. Such problems are difficult to eliminate on site, as they require diagnostics and, possibly, repairs.
- Finally, the accuracy of the work is greatly influenced by the skill of the performer. If you are a novice carpenter, do not be discouraged by periodic failures: accuracy comes with experience.
Chips
Another serious question is how to cut with a jigsaw without chipping? These are usually formed:
- when pressing the instrument excessively;
- when working on thin material near edges without reinforcing stops;
- when using unsuitable (worn) saws.
Avoid these actions and you will reduce the likelihood of chipping to a minimum. Also, some models allow the use of special anti-splinter inserts for jigsaws.
Anyone who has ever had to cut laminated chipboard or wood with a jigsaw knows that the material is almost never without chips.
Of course you can use special files for finishing cuts.
Smooth cutting of material with a jigsaw
For example this one. But even they do not always provide a chip-free cut. So what should we do?
Let's look at why chips occur. Watch how the chip appears. When the finishing saw goes down, the teeth come out of the material, practically without sawing it or forming any chips. On the contrary, they saw upwards and the teeth at the exit catch the material and break it out. In wood, neighboring fibers cling; in laminated chipboard, chips stick together with the coating.
Now try sawing two layers of chipboard at once. You will find that the bottom layer has been sawn clean on both sides. If you think a little, it is not difficult to understand why this happened.
This happened because upper layer The laminated chipboard did not allow chips to form.
By carrying out these small observations and experiments, you can quite easily solve the problem of cutting with a jigsaw without chipping. So what should you do?
I would like to draw your attention to the fact that when drilling holes, the same picture is observed: at the exit of the drill, chips also easily form, so you need to press some unnecessary part from the exit side of the drill when drilling through holes.
Alexander Klimov
Carpentry tricks Jan 21, 2014
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Smooth cut with a jigsaw. How?
Homemade device for precise cutting of boards with a hand-held circular saw
With a standard hand-held circular saw it is extremely difficult to make precise cross-cutting of boards. Getting the perfect cut in accordance with the markings allows you to simply homemade device, easily made from scraps in your home workshop.
The saw is designed for perpendicular cuts of boards ranging from 100mm to 250mm wide in 50mm increments, but can be easily modified to suit your needs.
How does a handheld circular saw attachment work?
The device in question is extremely simple and consists of only a few parts: a base for the saw, a guide rail, a thrust block and an eccentric clamp that ensures reliable fixation even on lumber that has been loosened with slight deviations in width.
Diagram of a device for a hand-held circular saw.
The homemade product is very easy to use. First, markings are made on the board.
Then a homemade device is installed on top, the lower stop of which is pressed against the edge of the workpiece, and the right edge is aligned with the mark.
Photo of a device for a circular saw.
Photo of the device - view from the bottom.
Now all that remains is to place the circular saw on the base and make the cut, pressing the edge of the sole against the guide side stop.
Cross cutting of boards using a manufactured device.
The result will be a perfectly even cut that exactly follows the markings.
With this device it is convenient to make many cross cuts when you need to frequently move the tool to a new cutting line, for example, when making grooves in beams. It is also useful if it is necessary to reduce the length of the workpiece by several millimeters, and it will cope with this task no worse than a miter saw.
How to make a device with your own hands
The cutting device is made for a specific model of power tool. On your circular saw, measure the distance from the engine to the bottom plane of the sole and subtract 5 mm. The result obtained is the height of the guide stop.
Removal required sizes circular saw.
Prepare a plywood base with right angles and wooden slats with parallel edges.
Blanks for assembling a device for cross-cutting with a circular saw.
Measure the distance from cutting disc to the edge of the sole.
Add an allowance of 6–10 mm and install a guide rail at this distance from the right end of the plywood. Secure the plank with countersunk screws, ensuring its strictly perpendicular position.
Screw with reverse side stop block and fix the device on the workbench.
Cut the plywood to the final width with a circular saw, creating a reference edge for precise positioning of the jig along the markings.
Draw a template for the cam clamp cam on paper.
Drawing of an eccentric clamp.
Mark the piece on 10mm plywood and use an awl to mark the center of the drill hole for the bolt.
Cut the workpiece with a jigsaw.
Make a washer with a diameter of 50 mm from the same plywood using a ballerina extendable wood drill.
Sand the workpieces and select an M6 or M8 furniture bolt with a mustache (or with a square headrest), a handwheel nut, a washer and a bushing. The latter can be made from a tube of suitable diameter. The length of the sleeve is the total thickness of the base, lever and plywood washer.
Ready-made plywood eccentric.
Make holes in the base with a drill according to the diameter of the bushing, which serve to rearrange the eccentric clamp according to the width of the board being cut.
Hole drilling diagram.
Assemble the eccentric mechanism: insert a bolt with a sleeve on top, and install a wooden washer, the cam itself and a steel washer from below. Tighten the parts with a nut.
Stick with inside stop strip sandpaper to prevent slipping when the eccentric is locked, which can occur when the device is fastened to a smoothly planed workpiece.
The clamping system of this device has a stroke that ensures fastening on boards with a spread of approximately 10 mm in width. If you need to cut or trim pieces of a different size, simply place a wooden block in front of the stop beam.
An example of using a device for cross-cutting a board of smaller width with a hand-held circular saw.
If desired, the potential of the considered device can be expanded by adding a cutting angle of 45°. To do this you will need to slightly increase the dimensions. support platform and install the second thrust block at this angle.