Installing a protective cover on the angle grinder
During finishing works often dust flies around the master, and even pieces of wood or concrete periodically try to get right in the eye. You can not always dodge, and how will affect the work of wasting time on one or the other! Therefore, it is easier to immediately buy a special device and be calm.
The protective cover performs a specific function, namely. it protects the user both from large pieces of brick or concrete, and from small dust particles.
And not only the user: if the debris gets into the mechanism of the angle grinder. the device can fail. But how do you choose a device so you won’t be disappointed?? Let us find out.
Dust extraction from an old pot
If there is sheet steel available, it can be used as the basis for making a dust outlet for the angle grinder. You will need a welder for this type of work. If no apparatus is available, it can be made from an old aluminum pot. The principle of making the device from an aluminum pot is as follows:
- Use the part of the pot with the bottom as the base. The bottom acts as one side of the nozzle, and the other side is made by bending the sides of the pot
- It is recommended to use rivets for joining the sheet aluminum
- A hole of appropriate diameter is drilled in the wall of the dust pan for fixing to the shaft of the power tool
- To attach the hose from an industrial vacuum cleaner, you need to make an opening on the outside of the side wall, to which the neck of a plastic canister, bottle or plastic tube should be attached. It can be attached to the aluminum base using threaded connectors with washers
- The connection between the hose and the nozzle is secured with a metal clamp
The principle of making a homemade nozzle is simple, so you can practice making covers of different materials. If you make the nozzle of two parts. movable and stationary, then the result will be a chisel cutter for making grooves in concrete.
Features of cutting with an angle grinder
After selecting the equipment and the wheel for it, before you cut concrete with an angle grinder, it is necessary to get acquainted with the recommendations of the work:
In this case, in the event of a backfire, it can be held, which will minimize the displacement of the cutting line; Work should be carried out only on a level surface, so that the balance of a person; Power cord should be located from the disc on the opposite side, in order to avoid accidentally damaging it. A cut in the cord can cause a machine shock and a short circuit in the power supply; The tool must be held firmly in the hands until it comes to a complete stop; When changing cutting location, the angle grinder must be turned off to avoid accidental contact with surrounding objects; When disconnecting power, be sure to unplug the equipment. This prevents it from starting if power is not applied to the tool
This will prevent it from turning on when the power is on without the operator’s control.
Cutting the concrete along the line
After the concrete angle grinder has been prepared, you can begin work.
- A fishing line is marked for the trimmer of the cut. At the same time, it is desirable to fix bars of wood along the line, which will make the line for the trimmer cut more even;
- Turn on the angle grinder, and the cut is made to a depth of about 5. 10 mm;
- The bars are removed;
- The cut is made to the desired depth. If the cut is done dry, the procedure must be stopped periodically to allow the tool to cool.
How to properly perform the cutting of concrete with an angle grinder, the video shows with all the details. The process is best done with tool cooling.
- A standard spray gun should be used to spray water directly onto the groove to reduce the amount of dust;
- Water is sprayed directly on the disc, if there is no power source nearby. This will reduce the heat of the diamond discs and extend their life;
- If it is not possible to spray liquid on the disk, cooling can be done with air. Periodically you should take the wheel out of the cut and let it work in the air.
If you have questions about cutting concrete, if you want to know how to polish concrete with an angle grinder and other details on the use of similar equipment, the video in this article introduces.
How to Change a Grinder Wheel | 4 Different Ways
Grinding discs and nozzles are used for grinding and polishing various surfaces (metal, wood, plastic and others). The grinding wheel is often used for grinding. It consists of many “petals,” made of sandpaper. The grit size of the sandpaper can be selected according to the type of machining required (finishing or roughing).,
You can also secure the sandpaper to the bit with Velcro. Such a tool is screwed onto the spindle of an angle grinder.
Special wheels and attachments similar to felt pads or cloth discs are available for surface grinding.
How to Wear a Protective Hood on an angle grinder
Protective boot and goggles. Compulsory precautions for safe work. The two most important rules that must be strictly observed are. Do not operate the angle grinder without the safety guard or safety glasses. Sparks, abrasive particles, metal splinters and dross. are unavoidable companions when working with an angle grinder. If they get into the eye, it can cause injury.
Goggles or a substitute mask must be of the closed type. Sparks and shards follow a complex path and can fly behind spectacles or a mask if they are opened from the side. It is not bad if the mask has a safety net, because the impact of debris can be so severe that an unreinforced mask may not survive the impact.
The guard is the first barrier standing between the operator and the grinding wheel, which is rotating at high speed. Destruction of the latter. rather frequent occurrence. Many people who more or less regularly use an angle grinder, at least once, but faced with it. Grinding wheel breakage most frequently occurs when it is caught (jammed) in the slot.
Install the shroud so that no sparks or shrapnel can be thrown toward the operator. The following pictures show how the guard protects the operator if a wheel breaks while rotating. It is clearly visible that the sector of the flying splinter is defined by the opening in the cover.
At the end of the article there is a video of this experiment.
The shroud must be mounted in such a way that it cannot rotate by itself. No matter how inconvenient it would be to work with the hood in some cases, its removal from the tool is unacceptable. Otherwise the operator is not immune to the most unpleasant consequences.
Other Personal Protective Equipment. In addition to goggles to the mandatory personal protective equipment when working with angle grinder should also include gloves or gloves. Hands are in close proximity to the rotating wheel and must be protected from sparks, abrasive particles and metal splinters. It is best to use thick leather gloves to protect the hands, cotton ones can not serve as reliable protection against sparks.
A dust mask or respirator is recommended if you are working on masonry materials without using dust extraction equipment.
Clothing must be loose and well tucked in. Wobbly parts can be tightened with a turntable.
Do not fit larger grinding wheels than the angle grinder is designed for. Small angle grinders have higher rotational speeds than large angle grinders. Wheels with large diameters (both new and used, reduced in diameter) can not withstand the high speeds and break. This is all the more dangerous because the blade guard must be removed in order to mount a large diameter blade. Besides, the high rotational load of the big wheel causes increased wear of the bearings and reduces the tool life.
Damaged grinding wheels, such as those with cracks, chipping, potholes, out-of-roundness or flatness, must not be used. This can lead to blowback and the final breakage of the wheel, creating an injurious situation.
One of the most important safety requirements for angle grinders. Saw blades for wood should not be used in angle grinders. Because of the extreme danger, this should be absolutely avoided. The history of using angle grinders is full of tragic accidents caused by the use of wood saw blades.
This is due to the fact that the wood. This is a heterogeneous material with knots that can cause kickback. There may also be nails. In addition, the angle grinder has a very high RPM and the saw blade dulls quickly.
After positioning the tool, check that the angle grinder idles for at least one minute at maximum rpm. In doing so, the wheel must rotate freely without touching the guard, and the vibration should not be more than usual.
Clamping of workpieces
When laying the workpiece, its bending in the cutting zone must be avoided, especially if it narrows the kerf. In this case, it is almost inevitable that the wheel is jammed in the cut and backfire. A correctly positioned workpiece must have stops in the kerf area and at the edges.
The angle grinder must be held firmly with both hands. This is a fundamental requirement that must be strictly adhered to. If the tool is held securely enough, even a reverse shock will not cause the tool to shift too much or break free.
The body must be in a stable, unbalanced position.
The supply cord must be away from the rotating disc. Otherwise it could be cut or caught by the disc. Both create a hazardous situation. Short-circuit and abrupt stopping of the disc with a displacement of the tool.
How to mount the blade on the angle grinder
Safety precautions for beginners when working with the angle grinder.
How to operate an angle grinder safely and correctly
How to operate the angle grinder safely and correctly.
Do not let go of the angle grinder until the grinding wheel has come to a complete stop. To prevent the rotating wheel from snagging on any object or surface.
When moving from one workplace to another, the tool must be turned off. The spinning wheel can catch clothing or foreign objects.
If there was a power outage during work, you must turn off the angle grinder so that when you resume the power supply it will not uncontrollably start.
Cutting and grinding wheels become extremely hot during operation and must not be touched until they have cooled.
Keep all bystanders a safe distance away from the work area. so that flying sparks and abrasive particles. or, in the event of an accident, pieces of wheel splinters. cannot cause any damage.
Cutting with an angle grinder. Grinding wheel must be brought into contact with material at full spindle speed, otherwise the wheel could jam.
Manufacturers of angle grinders explicitly recommend cutting in such a way that the direction of movement of the tool and the wheel’s rotation coincide. This eliminates the possibility of the wheel escaping out of the slot in an uncontrolled manner.
If there are no welding skills or your wife flatly refuses to give permission to damage the pot, then there is a third option, how to make a protective casing with a dust outlet, which also connects wonderfully to the tube of the vacuum cleaner. What you need to do?
Find a canister in your garage, storage room, or from a neighbor. From it with a construction knife or an ordinary knife by hand it is necessary to cut design holes, in accordance with the shaft of the angle grinder and the location of the disk on it. It’s a good idea to keep safety in mind. Why? Banal. to preserve the integrity of the hands
over, it is important to choose the right knife. It should have a quality handle and sit well in the hand without slipping out
After that, it is necessary to fix the tube of the vacuum cleaner with the neck of the canister, so that it becomes like a nozzle. How to? Cut the neck lengthwise and put on a clamp in order to tighten the tube of the vacuum cleaner
It is important to remember that in order to achieve good suction it is important to make sure that all parts of the housing fit tightly together
Causes of dust formation
The angle grinder is a universal tool. With its help, using various attachments, you can cut metal, stone, ceramic granite and tile, handle wood and other materials. But one of the disadvantages is the formation of a huge amount of dust. Works that cause the formation of large amounts of fine debris:
How I Make Straight Accurate Cuts With The Angle Grinder
After the repair is complete, the dust must be removed from all possible crevices and cavities. To protect neighboring rooms from construction dust, protective screens made of polyethylene film or light fabric are installed in doorways. Special devices are also used, which you can make yourself.
How to remove, change a jammed disc from an angle grinder?
How to remove the disc from an angle grinder angle grinder (further. angle grinder), popularly referred to as a grinder, is probably the most popular tool in the arsenal of almost every craftsman, regardless of his qualifications.
This tool is actively used in abrasive processing: cutting, grinding, cleaning workpieces made of stone, metal and many others. Widely used in areas such as: construction, woodworking and other similar types of work. Like any other tool, angle grinders are also divided into several classes.
This applies to household, semi-professional and professional tools. This classification is determined by the power resources of the tool, its characteristics, the presence of certain additional options, material and quality of assembly, etc. Д.
Consumables for angle grinders, in addition to different types of cleaning brushes, are cutting discs and various grinding discs. Types of equipment for angle grinder: how to make the right choice?
Preparing the tool for work
Tips for using the grinder properly are incomplete without talking about the preparatory phase. First of all, you must be prepared and ready to work.
It is dangerous to handle this product without observing safety rules, in case of health problems, as well as in case of a high degree of fatigue or in a state of AL-COHOL intoxication. Incorrect handling of this tool can cost you health and possibly life.
- Personal protective equipment should be prepared first to protect the worker from possible injury. Be sure to put on a protective cover and use safety glasses.
Caused by tiny splinters, hot metal sparks, dross. in any case arising from the use of the tool. Severe injury is guaranteed if it enters the eyes.
- Used mask or goggles must be of closed type, as the flight of sparks and fragments occurs on an irregular trajectory, and when using open-type protective equipment, they can fly over them. Optimum mask design. a product with a safety net, as a non-reinforced mask can break at the most inopportune moment;
- Installing a protective shroud that acts as a barrier between the rotating cutting disk and the operator. It is not uncommon for blades to break while you are working. Anyone who works with this type of tool often has had this happen. The most common cause of failure. jamming of the wheel in the groove. The blade guard is positioned to protect the operator from splinters and flying sparks. In the event of a sudden collapse of the wheel during operation, the guard will be a barrier between the splinters and the person, who will be protected from injury.
The housing is secured in such a way that unintentional rotation is avoided. It is not always convenient to work with protection installed, but it is strictly forbidden to remove it, since it may have serious consequences for the health of the employee.
Using high-quality consumables and serviceable tools, the work on the angle grinder will be fast and safe.