Overview Of Circular Saws For Wood
Circular saws for wood Circular saws for wood. Circular saws for multi-saws, edge cutters, sawmills, crosscutters, hump saws, circular saws and other woodworking machines.
Circular saws for wood
Circular saws for wood.
You can buy excellent circular saws for wood from us for any machine tools:
- For circular sawmills
- For edge trimming machines
- For miter saws
- For slab-processing machines
- For circular machines
- For other woodworking machines.
Handles for operating and guiding the saw blade.
There are always two of them, for steering and pushing. One-handed models do not exist, because when they touch the surface, passing knots, contact of a disc with a nail, etc. Kickback may occur.
The back is upright and usually of a closed design. Anterior, either horizontal or mushroom-shaped.
Staple is preferred. When performing oblique cuts and the need to change the position of the hand, the large length of the handle allows the user to find the most comfortable place to grip, adjusting the tool for himself, and not adjusting to it.
Hand circular saw Titan PCP16185. Circular saw for wood Yato YT-82153. Professional circular saw for wood Energomash CP-50185P. Guide bar.
The straight-line movement of the plunge-cut saw takes place along it (parallel stops are not used).
Some disc models are also capable of working in conjunction with guides. They are easy to distinguish by the groove that runs through the entire support frame and is located on the side opposite to the saw blade.
The tool is put on the tire from above, and not wound from the end.
The size and geometry of the grooves of most of the guides are standardized and suitable for devices from different manufacturers.
Size range: from 0.36 to 2.6 meters. The connection takes place with a replaceable butt plate.
Circular saw BlackDecker CS1550
Ways to Extend Saw Blade Life
The process of forming a new cutting edge is laborious and time consuming. Therefore, it is recommended that you fulfill a number of conditions to increase the life of the disk.
First of all, you should read the manufacturer’s recommendations. They indicate the number of revolutions (maximum and minimum) for different types of processed materials. For metal, this parameter should be less than for wood.
Hard solders have a long service life. However, they are more likely to chip and break off. The alternative soft is practically not subject to such defects. But its service time is shorter than that of a solid one.
The appearance of roughness on the cutting surface is not allowed. In the future, they can lead to the appearance of chips and cracks.
The material shows an example of a hand-made disc sharpening machine:
How to determine the sharpening angle of a circular saw
The best option is to have an original template, according to which you can correct the geometry of the cutting edge. Often it is made of thin-walled stainless steel, less often of thick cardboard.
Carbide teeth are manufactured in accordance with GOST 9769-79. But their geometry and geometric dimensions are determined by the manufacturer based on the purpose of the saw. If the template is missing, you must independently determine the required sharpening angles. To do this, it is recommended to use a pendulum goniometer.
DIY template making technology.
- Take a new disc with solders, which is completely identical to the blunt one.
- Draw precise outlines on a hard piece of cardboard.
- Using the pendulum goniometer, determine the initial geometry of the carbide beads.
- Enter the data on the template.
In the future, it can be used for self-sharpening on a machine or provided as a sample for companies providing such services.
It is important to remember that the rake angle can be negative. Such models are used for cutting plastic sheets and non-ferrous metals.
Ways to sharpen circular saws
Any sharpening machine can be used to form a new cutting edge. It is important to initially choose the right emery wheel and sharpen the edge with it. For this it is necessary to use corundum or diamond models.
The best option is to use special equipment designed to do this job. But due to its high cost, in many cases, its acquisition is impractical. An alternative way is to use a grinding machine with the ability to change the angle of the corundum disc.
In no case should you do the sharpening by hand yourself. First, it will take a very long time. Secondly, the result obtained will not meet the standards. If it is not possible to sharpen the saw blade on wood yourself, it is recommended to use the services of specialized companies.
Do-it-yourself professional sharpening of circular saws is performed according to the following rules:
- The main deformation occurs at the upper edge of the tooth. The edges are rounded from 0.1 to 0.3 mm. It is from this place that you need to start processing;
- Sharpening is carried out along the leading and trailing edges. This will provide the ability to repeat the procedure up to 25 times;
- Removal rate should not exceed 0.05-0.15 mm;
- The level of machining of the leading and trailing edges must be the same.
After the sharpening of the discs on the wood is completed, it is recommended to finish it with fine-grained sandpaper. This can be done manually or using a special machine.
The need to sharpen the saw
First you need to decide whether you need to sharpen or not. There are several clear signs indicating the relevance of this procedure. If you ignore them, then in the future the disk may become unrepairable and cause the failure of an expensive machine.
The advantage of using a brazed saw blade is a longer service life. It is also designed for hardwood processing. Surfacing is made of steel 9KhF, 50KhVA, 65G and similar compositions. They are distinguished by high hardness, but at the same time, with significant operation, the likelihood of their breakdown will increase.
Timely sharpening of circular saws with a do-it-yourself machine is performed with the following obvious signs:
- Increased engine load. The reason for this is the deterioration of sharpening and, as a result, the power unit needs more power to cut wood. If protection relays are not provided in the engine design, it may fail;
- Deterioration in the quality of the cut. The first sign is an increase in the width of the cut, as well as the formation of chips and irregularities along its edges;
- Increase in the processing time of the workpiece. It takes longer than usual to form the cut.
Sharpening circular saws for wood with your own hands: geometry of corners, machine tools
Carbide-tipped circular saw blades may lose their original qualities during prolonged use. But this does not mean that you should purchase a new cutting tool. In most cases, sharpening can be done at home using any suitable machine.
Drawings and tooth geometry
Sharpening of circular saws must be carried out precisely in compliance with the norms and requirements for the geometry of the teeth of each individual blade. To properly sharpen a circular saw with your own hands, you need to know the shape of the tooth and its geometry.
The best saw blades with a diameter of 190 mm
Such equipment is used for cutting small wooden materials of boards and beams up to 75 mm high. The small size of the blade allows it to be used on compact hand-held circular saws. Here is a rating of saw blades for wood for a circular saw with such a diameter, which are characterized by speed of cut, cleanliness and a thin kerf, and are also suitable for chipboard and MDF.
Dewalt DT1957 CONSTRUCT (250×30 mm; 48 ATB). Raw wood cut with nails
Sometimes there is a need to use especially durable saw blades that can easily cope with the load and will not lose their sharpness from collision with nails. A Dewalt DT1957 CONSTRUCT saw blade works well for this. It contains 48 teeth with a 10 degree sharpening angle. Has a thick solder on the tips of the teeth, providing a wide cut of 3 mm.
Pluses of Dewalt DT1957 CONSTRUCT (250×30 mm; 48 ATB)
- Cuts quickly and without jamming 80×80 mm timber cuts in 1 second.
- Excellent balancing, vibrations are hardly felt despite the tool diameter of 250 mm.
- Keeps sharpening well.
- Due to the thickness of the disc, it does not drift away.
- The disc itself contains clear instructions for sharpening the teeth.
- Four large slots to accommodate thermal expansion.
- The thick cut leaves a lot of dust in the air and leaves a lot of shavings on the floor.
- A sharpening angle of 10 degrees will have a worse effect on finished products.
- Poor for end cuts when you need to make an exact size, and not just saw a bar in two.
Output. It will not be difficult to disassemble building structures with nails remaining in them with such equipment. The owner will be able to work for more than a year without significant loss of sharpness.
CMT 292.216.64M (216x30x2.8 / 1.8 mm; Z64). Specially for cross cut
Cross-cutting wood is not easy for every blade. The reason lies in the perpendicular arrangement of the fibers, which creates increased resistance. To understand which saw blade for wood is better in this case, you need to remember that it should have alternately beveled teeth. This provides a soft impact and allows you to cut without severe scoring and chips.
CMT 292.216.64M (216x30x2.8 / 1.8 mm; Z64). Excellent disc from the brand CMT of Italian origin. It has a diameter of 216 mm and 64 teeth, which are effective precisely for cross cuts.
Pluses CMT 292.216.64M (216x30x2.8 / 1.8 mm; Z64)
- The soldering on the teeth helps to cut quickly even in hard wood species.
- Suitable for all brands of circular saws with a 30 mm seating shaft.
- The soldering lasts a long time despite the intensive use of the circular.
- When the platband is cut down, there are no explosions.
- Applied designations for which types of wood it is best suited.
- Four hook cutouts to compensate for expansion.
- Some users received a curved disc (with lateral runout), although there were no signs of damage on the packaging.
- So that there are no chips at all, it is also necessary to insert a zero liner.
- After it becomes blunt, it is very difficult to sharpen it correctly.
- If used on hard wood, it can burn the butt a little.
Output. An excellent choice for making a large volume of transverse cuts, which then do not have to be processed additionally, all ends can be made to size the first time.
Makita B-04597 (260 mm; 30 mm; Z70). Clean cut
On finishing blanks used in joinery, it is important to cut the part exactly to size so that no chipping occurs. For this, special saw blades for wood are used with the number of teeth from 70 pieces. This increases the cutting time, but promotes a neat effect on the fibers and ensures a high cleanliness. The resulting edge does not need to be processed and can be mounted immediately, but the price of such discs is very high.
Makita B-04597. Japanese disc with a diameter of 260 mm with 70 teeth. The cutting head has wide beads and ensures a clean cut thanks to its gentle action.
Pros Makita B-04597 (260 mm; 30 mm; Z70)
- Very clean cut especially on enamelled surfaces.
- Suitable for the most demanding topcoats.
- When working, there is no ringing inherent in cheap cutting elements.
- The steel is hard for bending.
- Extra strong alloy.
- Suitable for any circular with a landing diameter of 30 mm and a rotation speed of up to 3670 rpm.
- Has a decent weight, more than other models.
- Cutting width 2.3 mm can bite the rig with a slight slope.
- It takes time to learn how to saw them without further processing.
Output. It is a good choice for a furniture workshop or other joinery. With five expansion slots and five serpentine grooves, the disc features low vibration and quiet operation.
The best saw blades for wood for circular saw
CMT 272.190.42M (190×30 / 20 / 16×1.7 / 1.1 mm; Z42). Clean thin kerf
For particularly thin cuts with a clean edge, thin blades with a large number of teeth are needed. Such equipment is used in furniture production, where accurate precise cuts and rational material consumption are required. But the payment for this is the thin section of the metal, which leads to biting or deformation. This disc should be handled more carefully than others.
CMT 272.190.42M (190×30 / 20 / 16×1.7 / 1.1 mm; Z42). Extra thin disc with a thickness of 1.1 mm. Has 42 teeth and leaves a cut 1.7 mm wide. Manufactured directly in Italy and designed for finishing cut.
Pluses CMT 272.190.42M (190×30 / 20 / 16×1.7 / 1.1 mm; Z42)
- Suitable for circular saws up to 8000 rpm.
- Very quiet operation.
- With it, it is easy to make longitudinal and transverse cuts in materials of various densities.
- Does not leave lumpy fibers at the edges.
- The price is much higher than analogs.
- A complex sharpening that is not easy to restore at home.
- For installation on some circular saws, adapter rings are needed, those that are included in the kit are thicker than the blade itself, so the latter is not clamped to the end.
- You cannot rush to make a cut, otherwise it will be chipped.
Output. Ideal for a furniture workshop. It will allow you to cut through OSB and similar materials as cleanly and accurately as possible. The eight slots inside the disc provide good vibration damping and promote quiet operation.