Shulou(Shulou.com)11/24 Report--

The original title: "the lesson of blood, angle grinders must not install woodworking saw blades, universal tools, potential killers."

Angle grinder believe that friends are very familiar with it, it is the toolbox of the most powerful and one of the most commonly used tools, we use the function of the angle grinder is developed to the extreme, with the angle grinder, there is no work that can not be done.

It can be said that it is an omnipotent artifact that can drill, grind, cut and saw anything, grind workpieces of all kinds of materials, and cut almost all commonly used materials such as concrete, stone, bricks and all kinds of metals.

Picture source: pixabay angle grinder is a hand-held power tool, all called angle grinder, also known as angle grinder or disc grinder, as the name implies, its use is used for grinding, later people developed for it drill, cutting, saw is not its original design intention, so it is easy to cause accidents in the use process.

The angle grinder mainly has the characteristics of small size and high rotational speed, which also makes it have more efficient working ability; but at the same time, it is these two characteristics that make it highly dangerous and cause numerous safety accidents. People also love and hate it.

Let's take a look at how to safely use the angle grinder and what safety precautions the angle grinder has under different working conditions.

The structure and working principle of the angle grinder should first understand the structure of the angle grinder. The angle grinder is mainly composed of handle, protective cover, cutting / grinding and pressing flange and other parts.

The angle grinder uses alternating current or direct current (rechargeable battery) as the power source to drive the motor to rotate at a high speed and drive the cutting or grinding pieces to rotate.

Before using the angle grinder, you should first prepare for protection. The angle grinder will produce a lot of dust and sparks, which is why you should be fully equipped with protective clothing, including tough gloves (no knitting gloves), protective boots, goggles and dust masks.

In the working process of the angle grinder, many small fragments will fly out at an astonishing speed, if there is not enough protection, it will face the risk of serious injury.

You should also make sure that you are not wearing any loose clothes, as well as long hair and jewelry, so as not to be rolled up by the angle grinder during your work.

It is also important to clean up the work environment and ensure that there is no combustible material that may be ignited by splashing sparks. it is also important to provide adequate ventilation to the workplace so that the floating dust can float out of the room, thereby reducing damage to the operator's respiratory system.

In fact, as we all know, the above protection only exists in theory, and it would be nice to wear goggles and gloves (no knitting gloves) in real operation.

The various parts of the angle grinder, especially the saw / grinding blade, should be inspected, which is also a critical step, as the damaged saw / grinding blade may cause personal injury.

Fix or clamp the workpiece to be machined, and whether the parts on the angle grinder are loose, and fasten the saw / grinding blade to the angle grinder with flanges.

When using the angle grinder, you should always firmly grasp the handle, if you start to skid, please close and readjust immediately; do not use the grinder too hard, rely on its rotational speed to exert a little more force, you can complete the work.

When polishing the angle grinder, it is necessary to maintain a certain angle with the workpiece, make the grinding piece contact with the workpiece better, and gradually adjust the angle and grip position to avoid sparks and debris to themselves.

When the cutting blade is worn too much, it should be replaced in time, usually half of the diameter should be replaced, and when changing or checking the saw blade, be sure to unplug the power plug, and do not use grinding blade for cutting.

The angle grinder shield should not be removed at any time, and always let the side with the shield be biased towards the operator when in use. if the shield must be removed in order to work, then look for professional alternative tools to use, do not risk using it to save trouble.

Which is better to push or pull when cutting? When pushing, the saw blade and the machine will gradually move away from themselves, and the debris will fall to the ground, while the debris will be more likely to spatter on the body when pulling, and it will also increase the risk of bursting, so in order to make it safer, it is usually cut by pushing.

In addition, when buying angle grinders, many businesses will be equipped with all kinds of saw blades, including woodworking saw blades, and in our impression, angle grinders can saw all kinds of hard stone, concrete and steel. then there must be no problem with sawing wood with it.

The actual use is also like this, in the high speed of the angle grinder, the wood can be easily sawed, but at the same time the danger lies in it. When the woodworking saw blade encounters hard objects such as wood knots and nails, the angle grinder will rebound instantly, and the hands can not be controlled at all, light damage the angle grinder and saw blade, and seriously endanger personal safety.

At high speed, the grinding wheel relies on a large number of small particles to contact with the workpiece for cutting, although the cutting is slow, but the reaction force is very small; the saw tooth of the woodworking saw blade is large, and the reaction force is also very large. if you encounter the rebound caused by hard objects at high speed, the hands can not be controlled at all, which is also the reason for many angle grinder accidents.

Therefore, the angle grinder as a hand-held power tool, it is extremely unsafe to replace it with woodworking saw blades for cutting wood.

After using the angle grinder, when the work is finished, cut off the power supply and wait for the saw / grinding blade to stop turning before putting the angle grinder in a safe place.

When leaving the workplace, check the surrounding environment to avoid sparks or high-temperature iron shavings ignite the surrounding objects and cause fire.

If the best tool is not used properly, it may become the most dangerous tool, and this has nothing to do with the tool, but lies in the operator's sense of safety. I also hope that everyone will be able to use the angle grinder or other tools in a standardized way. always stay away from danger.

Finally, the friends talk about using the angle grinder, so as to give you a reminder.

The picture in this article is taken from Youtube "Grinder Safety and lies you are told to scare you".

Gif is intercepted from Youtube "Grinding wheel safety"How To Use An Angle Grinder Ace Hardware" Angle grinder dangerous kick back video dont use it for wood cutting

This article is from the official account of Wechat: manufacturing principle (ID:zhizaoyuanli), author: Lao Zheng

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