A jigsaw is a very useful power tool. With the right file, a little experience and confidence, and most importantly, proper body position, you can do anything with it. You can do a lot of things that you can't do with other instruments. The machine is used for cutting straight lines, curves, profiles and cutting circle. Great for cutting wood, metal and plastic.
The master showed how to cut a perfect circle with a jigsaw. He made a device out of wood. Its design is unpretentious, and the device itself is easy to manufacture. To get an idea of this, see this image.
Material used:
12 mm plywood sheet. Wooden strip. Nails.
How to do
First of all, measure the size of the jigsaw base plate. The next step is to cut plywood sheet in the shape of L, as shown in the image.
After cutting a sheet of plywood to the exact size, the next step is to cut a piece of wood to attach this sheet with nails. This strip is used to hold the jigsaw in its position.
Make sure that there should not be any type of opening between the strip and the base plate of the jigsaw.
The next step is to drill small holes in the sheet. The distance between these holes is, for example, 10 cm. These holes are used to cut different circle diameters.
After that I drew it so that it looks good. It is now ready to be used to cut the perfect circle of the clamp.
Advantages:
This is very easy to do.
Easy to use.
Less cost.
Used for cutting round discs of various diameters.
For a better understanding, watch the video below.
The electric jigsaw is a well-known tool manual type designed for cutting patterns on various surfaces. In its significance, it is as important as a drill or a hammer drill.
The jigsaw is used for sawing various kinds of materials (wood, metal, etc.).
They can make straight and curved openings in wood of any species and other non-natural materials, precise cuts geometric shapes with a complex trajectory. To find out the question of how to cut a circle with a jigsaw, the tips and recommendations listed here will help.
Bench tool properties
The jigsaw is intended for household and professional needs. Devices of the first type are characterized by low power and are designed for work in small volumes. The purpose of using special equipment is the professional orientation of the tool, its productivity and a long period of work.
Usually Appliances have standard set functions:
- frequency of moves;
- method of fixing the sheet for cutting;
- pendulum type movement;
- saw rotation.
The electric jigsaw is used for finishing surfaces, sawing out uneven edging, holes in the internal position, and making furniture. The processed material is reliably fixed on the basis. Marks are made on it in advance, then holes are sawn. The rotational vibrations of the shaft are converted into translational movements. The saw is fixed on the rod, its quality determines the period of use of the product. When choosing a device, preference should be given round shapes and thickened stems.
The jigsaw is different positive qualities, as:
- Cutting holes in any samples.
- A simple device allows for quick replacement of saws.
- Possibility to make round or rectangular cuts.
- Ease of use.
- Does not require special knowledge and skills.
- The presence of a significant number of saws with different step limits of action, tooth shapes makes it possible to carry out different kinds work in a single device.
- Reliable fixation of the sawn sample allows any distance from the edge of the product.
- The device of universal action allows you to cut to any depth.
- At the time of work, the material is practically not damaged.
Drawbacks:
- The shortened movement of the web provides a slowdown in the operation of the device.
- Possibility of injury.
- Probability of cable failure.
- Perform a battery level check.
The jigsaw has a built-in protection system, pneumatics and an electric drive.
Released new items are equipped with advanced features: vibration reduction, improved productivity, instrument equipment convenient features. Depending on the method of fixing the cutting part, saws are:
- with holes;
- with a cruciform element;
- with a smooth base.
A jigsaw in some way can replace a router, hand saw, circular, chain saw, angle grinder. The tool is necessary in any household, it allows you to carve wood.
The current supplied to the device from the network gives an impulse to the engine, setting it in motion. Together with the gearbox, it transmits momentum to the gear, which secures the stem. The circular action of the shaft is modified into the movement of the working element of a reciprocating nature, moving up and down. Saws are fixed with screws or clamping mechanisms. These fasteners help short time change canvases.
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Rules for working with an electric jigsaw
To understand how to properly cut a circle in wood, it is important to study the features. This carpentry tool helps to saw out ovals, wavy patterns, figures with uneven outlines, non-standard carved caskets, shelves with patterns of a through plan. In order for the interaction with the jigsaw to be organized and safe, it is important to adhere to the rules:
In order for the work with the jigsaw to be quick and safe, do not forget to fix the product before work.
- To avoid inconvenience, special stands should be prepared during work. A slot is made to the middle of the support, somewhat resembling a lock hole.
- The stand is fixed with clamps or screws to the workbench.
- At the time of work, you need to sit down, place the file strictly vertically relative to the floor and perpendicular to the surface.
- The workpiece is placed in the middle of the stand, holding it with your left hand, you can cut plywood with your right hand. The location of the cuts should be in the middle of the support hole.
- The tool does not tolerate strong pressure: just a little touch and a gradual movement up and down, and it will begin to work effectively.
Attributes:
- pencil;
- drill;
- drill;
- jigsaw.
Often there are questions about how to cut a circle with a jigsaw, since many craftsmen are only faced with straight cuts of the material. But cutting out various degrees of curvilinearity seems difficult only at first glance.
For cutting you will need:
- jigsaw;
- plywood or other material;
- files special purpose depending on the material;
- marker;
- sample;
- working surface;
- clamp.
Exist various ways. You can cut a circle with both a manual and a mechanical jigsaw. Hand tool is a simpler device than an electric one. It is not suitable for thick layers of material and for long cuts. Jigsaws are divided into ordinary and artistic. The difference between them is in the location of the file: in the usual case, the file is located vertically, and in the artistic case, the role of the file is performed by a steel sheet. An ordinary electric jigsaw can be cut into thick plywood, for the manufacture of a headboard or other furniture. Art can cut out complex elements, letters, puzzle pieces.
Cutting blades are varied for each type of jigsaw, and you need to select them according to the material with which you are working.
How to cut plywood with a jigsaw?
Before you cut a circle out of plywood, you should remember a few general advice to work with this material. Sawing can only be done on dry material. Wet plywood has increased resistance, and when sawn, the veneer will begin to peel, which will lead to damage to the file or even the entire tool in the case of electric models. At the first sign that the teeth are not sharp enough or some part of the blade is bent, the file should be replaced.
When sawing plywood with an electric jigsaw, it is necessary, if possible, to place the main cutting lines along the veneer fibers.
This will promote clean cut edges. At work manual jigsaw easier to cut across the fibers. This will not protect against chips, but there will be less chance that the file will pinch or it will go along the chip away from the intended line.
Before cutting out a circle, you need to transfer its contours to plywood. At the same time, it is necessary to try to ensure that areas with defects, chips, spots and knots fall outside the cut contour. You can transfer the outline to plywood by tracing it through carbon paper, cutting out a paper outline for a stroke, or simply draw a circle of the desired radius with a compass. If necessary, the starting hole in the plywood is made using a thin drill.
To cut a circle with a jigsaw, a canvas is inserted into the hole. The free end of the manual model is again fixed in place with a clamp or a fixing screw. The workpiece is pressed against the workbench with clamps, the cut is made according to the transferred line. When the circle closes, the central element is separated from the sheet and the edges are processed sandpaper or a file.
Before cutting with a jigsaw with an electric motor, you need to install a narrow file on it. There is a special improvement for this tool, called a circle cutter, it is installed in the center and work begins. When working on the tool, do not press, this does not contribute to a faster move. As a result of pressure, the jigsaw file and even its fasteners can bend and break. If the circle to be sawn has a small radius, it is better to do the work in several passes, as tight turns can break and bend the blade.
Any design, whether in your home or in production, involves working with metal.
Often, during the operation of this material, the question may arise: how to cut a circle in?
It deserves attention, because from the choice the right tool and technology directly depends on the complexity of the process of performing work and the quality of its result.
Metal can be thin or thick and strong, so a variety of tools are used to cut it.
The choice of materials and cutting technology also depends on what diameter the circle is needed and how even it should be.
Jigsaw application
If there is a need for a perfectly even circle, you can use an electric one to cut it.
The work is carried out in several stages:
- First, the thickness of the metal is determined and the appropriate saw blade for electric jigsaw.
- Before cutting a circle in metal with a jigsaw, the outline of the circle to be cut is outlined on the working plane.
- With the help of a drill and a drill (with a diameter of eight to ten millimeters), a hole is cut out from which work will begin.
- A jigsaw saw blade is placed in the resulting slot and cutting continues as planned.
Cutting with this tool does not take much time and effort. Moreover, using a jigsaw, you can get a circle with perfect edges. But this tool is used only for working with metal of minimum or medium thickness (for example, 2 - 3 mm).
The use of grinders
The grinder is used in working with metal of small thickness. You can form a round hole with this tool by following these step-by-step tips:
- Before cutting a circle in metal with a grinder, marking is carried out so that its contours are clearly visible.
- Along the entire length of the intended drawing, short segments are cut through the angle grinder disk, which will eventually connect.
- The figure will look more like a polyhedron than a circle. Therefore, after cutting is completed, the product is processed and cleaned until the edges are sufficiently even and smooth. For processing, you can also use the grinder. If the circle is wide, you can grind the contours with a large disk.
When processing a cut circle with a grinder, you should be careful that the disk is inside the hole and, at the same time, is located in the same plane with the work sheet.
Cutting a circle in thick metal
In order to outline the exact contours of the figure that will be cut out of metal, you should use a ruler, a marking compass and a marker.
First, with the help, the required width of the compass slot is set so that it corresponds to the required diameter of the circle.
Then the center point of the circle is determined on the metal plane.
Contours are drawn from it with the help of a compass.
So that during the robots they are clearly visible, they should be drawn with a marker.
Cutting torch application
A circle in metal of medium thickness can be cut with a gas cutter. The work takes place in several stages:
- The contour of the circle is outlined.
- The tool burner ignites.
- Burning flame is adjustable.
- Gently and slowly, the torch is carried out according to the drawn drawing.
With this method, you can cut a hole in the metal, which has about four or five millimeters.
Welding Machine Application
If there is no gas cutter in your home arsenal, you can use a welding machine.
It needs to be adjusted to high level current.
Then a burning arc is substituted for the contour and held on it until a hole is formed.
Then you just need to slowly lead it along the drawing until you succeed even circle.
But the most important thing is to correctly adjust the power of the tool.
For example, if metal is used with a thickness of about four millimeters, a device operating at a power of about 150 amperes is needed. If the metal is thicker, the power of the tool will be greater.
To speed up the process, it is better to use thin electrodes. However, they burn out quickly and need to be replaced. Because of this, there will be a need for frequent heating of the metal, since it will have time to cool down during the replacement of the electrode.
How to cut an even circle from metal with a cutter is shown in the video:
Usually, in order to cut an even circle from a piece of plywood or board, craftsmen resort to different kind routers, use manual or electric jigsaws, and, at worst, take up a hacksaw. Meanwhile, with a simple fixture You can cut a completely even circle with a circular saw. How to put it into practice, read and see the detailed step-by-step instructions.
materials
Before you cut an even circle with a circular saw, make sure you have the right materials. You will need quite a few of the latter:
- a piece of plywood;
- meter;
- the circular saw itself;
- nails or screws.
Step 1. Take a meter and measure the depth, length and width of the gutter on the working part of the table circular saw. Based on the parameters obtained, cut a block of suitable thickness from a piece of plywood.
Step 2. Insert the timber into the gutter and adjust the edges if necessary. The timber should slide easily along the gutter without catching it.
Step 3. Leaving the block in the gutter, place a square piece of plywood on top of it. Install it so that it does not interfere with the operation of the saw itself.
Step 4. Fasten the plywood firmly to the bar with self-tapping screws. When choosing fasteners, pay attention to their length. Self-tapping screws must not damage the surface of the desktop when screwing in.
Step 5. Take a piece of plywood or board from which you need to cut an even circle. Fit it into a square shape. Install plywood over the prepared structure and drive a nail exactly in the middle. Don't drive the nail all the way in. The plywood from which the circle is to be cut should rotate freely, and the nail itself will need to be carefully removed upon completion of the work.
Step 6. Rotating the square in a circle, cut off its corners so that you get an octagon.
Step 7. Continuing to rotate the square further, cut it sharp corners. At the end of the work, carefully sand the slightest bumps. Yes, without extra effort you will get an even circle cut out of the board with a regular circular saw.
