How to make a table saw with my own hands. How to assemble a functional device

Making a 12V table saw

There are times when you can’t do without a circular saw at home. You need to cut evenly and neatly Wood fiberboard or staples. But a hand saw or an electric “bee” with large teeth is not suitable.Today I will tell you how to make a tabletop circular mini saw for fine woodworking. Such a device allows you to work with small joinery parts, beautifully cut and cut material to create mini-ships and other crafts from wood.

Design of a circular saw

The structure of the circular saw, like most stationary machines, consists of such basic parts:

  • Stand or base;
  • Motor. most often it is an asynchronous electric motor;
  • Belt drive. pulleys and transmission belt;
  • The working shaft of the circular saw;
  • Work table;
  • Safety devices;
  • Electrical equipment.

The whole layout of the device is based on a solid bed or base. This may be a single piece cast aluminum cast iron, or have a frame. the body, assembled from scraps of pipes or angles. Home-made machine, preferably made from scraps of profiled pipes, for example, you can use a square profile tube 25×25 mm or rectangular profile of 20×40 or 25×50.

Spindle for mounting the circular circular saw is used in the form of threads on the shaft. Clamping of the saw in such a case is done by means of a nut. The spindle assembly can be made in another way, like a hand-held circular saw. drill a hole in the shaft, cut a thread on the inside and clamp the disk with a bolt. But as practice shows the first option is better. the circular saw is clamped more securely, and the thickness of the blade can be chosen differently.

When using a belt drive, the electric motor and the working shaft are connected with a V-belt. The rotary motion from the motor shaft via the pulley is transmitted to the working shaft pulley. It is recommended to design the circular sawmill according to this scheme, this will increase the service life of the motor and exclude the possibility of jamming. If the circular disk jams, and it stops, and the belt just stretches, and the motor continues to run.

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The working table is necessary so that the workpiece during work was in one plane. the table of the circular saw is as wide as possible, so that it is possible to safely lean the workpiece on its plane.

In order to make a woodworking circular saw safe, safety devices are necessarily installed. This can be a protective cover, a pusher for working with small parts, a parallel stop.

One of the options to collect a simple budget machine for home work is the option to remake a manual circular saw into a stationary, adding to the actually finished device of the bed and a wide work surface.

Making a circular saw with your own hands

A few words about drawings and sketches with dimensions

No two homemade circular saws are identical. In 100% of cases there are differences in size, the selected material, size and location of the shaft and motor. That is why we do not show ready-made drawings. To avoid confusion about dimensions, you can make a simple sketch for yourself, indicating the height, length and width of the bed blanks.

Mistakes of this design. off-center in the corner of the saw blade. It is optimal when the disc length is in the middle of the table or with a slight offset to the back. Then there is more space in front of the disc for stable placement of the workpiece. In terms of width, the disk should also be far enough from the edge, so that the wide workpiece can fit.

A board as a work table is not the best option.

The advantage of this construction is that you can use the machine not only as a circular saw, but also as a workbench. Good for crosscut sawing firewood, sawed off logs close to the edge, will fall by themselves, not lingering on the table.

Assembly details and stages

Before assembling the frame you should already have the motor and shaft with pulleys, belt.

The individual parts of the frame can be connected in different ways.

Wood. with screws, self-tapping screws. Possibly a cleat/groove joint in some places. In a quarter, etc.д.

Metal can also be assembled on bolts, or by welding or a combined method. welding and screwing.

First the frame is assembled. In this case, the place of attachment of the motor and shaft is determined in advance.

the most important thing is to make sure that the shaft and the motor shaft are centered. Shaft and motor pulleys must be in the same vertical plane. A motor drive should be provided for tensioning the belt.

The distance between shaft and motor is calculated on the basis of standard belt dimensions. (730, 750, 775, 800 mm, etc.). Other sizes (1040, 1045, 1050, 1060 mm, etc.) are available for larger machines. It is better if the motor mounting slots for tensioning are long to be able to put belts of different lengths.

The motor mounting pad should only be finally fastened after the alignment and correct positioning of the shaft and motor pulleys in relation to each other has been established. The belt will wear out quickly in case of misalignment. If the alignment is too big, they cannot be operated at all. Belt comes off the belt pulleys.

The alignment can be checked in different ways.

  • Measuring tape. Measure the distance between the centers of motor and machine shafts. It must be identical on both ends.
  • Use the level at. Shaft bracket and motor should be aligned strictly on a master level (carpenter’s level).
  • Checking with a rule or laser. After preliminary fixing the shaft and motor to the pulleys, a flat surface (a rule, an angle) is applied. The surface must lie flat against the pulleys over the entire plane. The presence of a gap indicates a misalignment of pulleys. Instead of rule, laser marking beam can be used.

Connect the power supply and the switch after attaching the motor and installing the shaft. It is more convenient to do in the absence of the table. A push-button three-position package from old washing machines (activator type) is well suited. It should be placed on the right front foot or next to it “countersunk”, under the table cover. This is important so that the switch is not accidentally broken, for example, by a fallen workpiece.

The working table is fastened to the frame in the last turn

Example. step by step instruction for wood sawing machine

Let’s analyze one of the popular options for making a circular machine with our own hands on a metal base using an induction motor from a washing machine. Previously, we have already told how to make a circular saw with a motor from a washing machine, we also gave detailed instructions, but in this case we will have a radically different design, so no repetitions, only new ideas.

  • metal angle;
  • profile tube;
  • leading and driven pulley;
  • belt transmission;
  • the shaft with the bearing;
  • metal or plywood sheet.

To make a machine for sawing wood, you need to perform the following steps:

After completing all the above manipulations, you can start working on the homemade circular saw.

After watching the video, you can see in more detail how to make a stationary machine for sawing wood with an asynchronous motor from a washing machine.

We also recommend to read. in which we considered how to make a circular saw from a drill, angle grinder.

make, table, hands, assemble

Process of manufacturing

Lay the chain on a flat surface, find the connecting link. Using a cordless angle grinder or an angle grinder, carefully file out the flat of the rivets that connect the chain links.

Prepare two pieces of polymer sling, each about 30 cm long. Fold them in half, the size of the loops should allow a comfortable hand position while working with the saw. Bend the ends by 3-4 cm and put them together. This is how to prepare a reinforced knot for attaching a chain.

Place a piece of baking paper on a piece of board, put one end of the folded sling on it, and paper on top again. Use an iron to heat the prepared area until the polymer melts and glues. Heat carefully, do not allow the plastic to melt completely. some types of plastic become brittle, the chain joint cracks during sawing, and you will have to repair the tool in the field. Use this technique to cut all four ends of the band.

Use the punch to make the holes for the bolts. Place them approximately in the middle of the prepared place at a distance of 2-3 cm from the end.

Attach the chain to the handles. Put the bolt with the washer in the hole first, put the open chain link on it, then the other end of the handle, and tighten the connection with the nut.

The handheld chainsaw is ready to use. Press the branch with your foot and try to cut it. If the chain is sharp, then it will require a minimum of physical effort and time to cut firewood to the required length.

Safety precautions at work

Because of the rotating saw blade and the electric motor, the home-made wood sawing machine is a high-risk tool. Therefore, the following safety precautions should be followed when working on it:

  • Wear eye protection, gloves and protective clothing;
  • Check the saw blade for visible damage and defects before starting work. If they are available, it is absolutely necessary to replace the disc;
  • Inspect the material to be sawn. They should not contain nails, screws and other materials that can damage or deform the saw blade;
  • when working with workpieces, it is best to use special pushers to protect yourself from possible injury;
  • Since the work process generates a large amount of fine sawdust, you must work in a well-ventilated and sufficiently lit room;
  • To change the saw blade turn the machine off and wait until the blade comes to a complete stop. It must not be stopped by hand.

The wood sawing machine is an indispensable tool in the household of every owner. For infrequent domestic use, there is no need to buy expensive factory units. If you have the desire and a little free time, you can make it yourself.

What are the options for making

There are several ways to make a circular saw at home. Among the most popular methods it is worth noting:

  • Installation of a manual circular saw on a machine made from a bar;
  • The use of an angle grinder with a steel disc to act as a drive;
  • Installing the motor of an old washing machine on a wooden surface.

If the craftsman plans to use the homemade machine to dissolve boards of considerable thickness, it is necessary to equip the machine with a motor of increased power. Only such a device will be able to cope with the tasks quickly enough and will not delay the master.

Step by step instruction

To assemble the system it is not even necessary to create a diagram, as the procedure is quite easy.

How to make a circular saw from an angle grinder. instructions:

  • To make a small tabletop from available materials. Supports should be long enough to put an angle grinder under the base. They are attached to the stiffeners. small boards that are mounted on the corners of the table at intervals of approximately 125 mm from the bottom.
  • It is recommended to make the external work platform of laminated chipboard. When the entire table is ready, it should be turned down face down to make marks for mounting the cutting disc (in the future, the gap is determined by this node of the angle grinder. it should be greater in length and width of the cutter itself). Using a drill, make 2 form marks.
  • Using a ruler, join the joints of the gaps, with 2 parallel strips across the width. Then the marking is removed, by means of an angle grinder. The slot for the disc is made.
  • Need a fresh disk, fixed in an angle grinder. The best solution for wood is 125 mm. The disc must have carbide teeth. The interval is chosen by a specialist personally.
  • At the bottom of the functional platform it is necessary to attach a plate for mounting the angle grinder. Here you cannot do without a screw clamp. The unit is fitted by means of clamps and tightened by means of nuts.
  • In the made gap you can insert a fresh disk. It must be positioned so that the central area is slightly above the cover.
  • It is recommended to make a fastener for the protective canopy. It is available in every specialized retail outlet.
  • The retaining bar is made of any steel angle. It should be fixed to the plywood or chipboard. The dimensions of the plate must match the parameters of the table top. Mounting is carried out at intervals of approximately two centimeters from the teeth of the disk. At the ends of the rail to make a few gaps, to install screws or screws. for a good attachment to the table top.
  • On the inside of the structure to put a retainer for an electric socket. As a rule, fastening is carried out on the outside (on the stiffeners), but you can arrange as will be comfortable to a specialist.

After assembly, you need to organize a test run, and try to saw a small bar.

Making the tabletop

Work on this part of the equipment is carried out in the following sequence: We begin with the marking of a piece of plywood, carried out so that its edges are flush with the edges of the prepared sheet of iron. After marking, using a hacksaw or an electric jigsaw, you can cut the plywood workpiece of the required size. If desired, you can process its edges with a router, although it is not necessary to do this at all (the main requirement for this element. its reliability, not attractiveness).

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After completing these operations, the surface of the tabletop is carefully machined (sanded down) with a medium grit emery cloth.

Then the position of the cut for the saw blade is preliminarily marked on its lower part. For this purpose it is necessary to determine the dimensions of the sole of the circular saw prepared for installation. For the convenience of measurement the disk is simply removed from the saw, after which you can easily determine the dimensions of the seating.

For the convenience of marking the worktop the saw blade is removed

When it is finished, take the circular saw and try it on the place of installation. If necessary, the position of its fixing points is corrected (at the same time the contours of the cut for the saw blade are specified).

The finished plywood worktop is covered with a steel sheet that is fastened to it with self-tapping screws. Afterwards it will be possible to put a special marking on the work surface, allowing to correct the position of the wood workpiece in the process of its processing.

What you need to make a circular saw

Materials for building a circular saw:

  • 4020 mm wood planks.
  • A sheet of plywood, not less than 10 mm thick (the width and length are chosen according to individual needs and preferences).
  • Two-core copper cable, from 0.5 mm square, approximately 1-1.5 m.
  • A well-disconnected key adjacent to.
  • Electric motor available from the online store.
  • Adapter for the power unit to attach the circular saw blade (can be purchased online).
  • Circular saw blade.
  • Screws, bolts, nuts.
  • Sandpaper.
  • Lacquer or stain (choose the shade according to your taste).

The manufacturing process consists of the following steps:

  • Measuring the electric drive motor’s footprint.
  • Prepare the rocker arm of the construction drive and the stand of fixing on the working space.
  • Assembling a wiring diagram of the drive design.
  • Assembly of the circular saw system.
  • Mounting the unit on the work surface, its fixation.
  • Implementation of a trial run of the saw.
  • Performing the final sawing of the timber and steel trimming of the pipe.

Of the positive features of such a construction can be noted 3 key ones, it is easy to create, cheap cost of materials and small size.

Also do not forget that such a device carries an additional hazard, so you need to work with it with extreme caution. In order to prevent injury, you should not forget about safety.

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