The forerunners of modern automatic saws were tools made of stone, bones, on which jags were applied from one edge. The beginning of this instrument was laid in the fourth millennium BC. They are used both in household work and in the creation of various works of art. Look circular saw guide for know more.
Then the stone and bone were replaced by copper, iron, steel. The first power saws appeared in Germany in the XXIV century. Electric saws became widespread only in the 20th century.
How to use a circular saw
- When working, do not use clamps, vices, or other methods of rigidly securing the workpiece. It is unacceptable to hold it with your hands or body.
- Do not overload the tool by doing work that is not intended for it.
- If the on / off key is broken, do not use the tool.
- When changing accessories, making adjustments or other work, the tool must be disconnected from the power supply.
- Storage of the tool should be done in places that are hard to reach for children and pets.
- Remember to periodically service your tool.
What can be done with a circular saw
The principle of operation of this unit is based on the rotation of the cutting disc by an electric motor. The saw design is presented in two versions: manual or stationary. An important difference between these two versions is that the force from the engine to the disk in the stationary model is transmitted through the belt, while in the manual model the disk itself is fixed on the shaft. The saw can cut wood both along the fibers and across them, cut a quarter. The tool can be used to saw off soft metal, plastic, if you use special discs.
Setting up the circular saw
Before starting work, you should:
- put the disc;
- make sure that it is securely fastened;
- make sure that the protective cover opens freely and returns to its original position when the handle is released;
- check the correct installation of the riving knife;
- make sure the saw is working properly by holding it in the ON mode for 10 seconds without load.
It is quite easy to adjust the saw before use. This requires:
- Adjust the position of the guide slot on the table and disc using a vernier caliper, aligning the guide slots on the blade. When checking the tooth in the front and back of the blade, the difference should not exceed 0.05 mm
- Check the parallel stop with a slot or slot. Here the offset should also not be more than 0.05 mm.
- Make sure to align the riving knife with the blade so that it is in line with the blade. In case of mismatch, a more accurate adjustment is achieved by rotating the washers
- Tighten the mounting bolts securely to protect the table and the machine from vibration