Installing the protective cover on the angle grinder
With grinders that do not have a back handle, the brushes are replaced in the following sequence:
- Unscrew the self-tapping screw from the end of the angle grinder.
- Pull off the cylindrical protective hood.
- Pull the cover off the contact block.
- Use a thin screwdriver to pry off the brush cap and pull out the graphite rod.
- Insert new brush, close contact block with cover.
- Repeat all steps with the other brush.
- Slide the cover onto the angle grinder and secure it with the self-tapping screw.
There is often another way of attaching the brushes. In this case, the sequence of operations is as follows:
- Remove the cover by first unscrewing the self-tapping screw.
- Release the brush from the belt clip by undoing it with a screwdriver.
- Pull the brush out of the brush guide block by prying it out with a screwdriver.
- Remove the brush contact from the connector. Also by prying with a screwdriver.
- Connect the contact of the new graphite rod to the connector, insert the brush into the guide block and press it with the spring.
- Repeat the second brush, cover the housing with the cover and screw it on with the self-tapping screw.
These are the two most common ways to replace the graphite contacts. Although other designs of grinders are not excluded.
Required materials and tools
To begin with, you need to gather all the necessary improvised materials, which will help to carry out the installation of this equipment. It is very easy to do, because often all the necessary materials are at home or in the nearest hardware store. The basic items that will be needed include:
It is also important to prepare the tools. They will help to assemble the cover correctly so that it will serve long and reliably. The following techniques and equipment will be required:
- electric screwdriver;
- construction hairdryer;
- step drills;
- cutting disc;
- vacuum cleaner;
- grinding diamond bowl;
- Angle, marker and screwdriver.
Of course, you also need an angle grinder itself, to which the cover is made. It will be needed for the final phase of work. Once all the tools and materials are assembled, you can begin the main process.
Is there a significant difference in direction of rotation
Direction of rotation can be changed both toward you and away from you. These options have advantages and disadvantages. If the abrasive is placed away from itself, then sparks and dust fly on the operator, which creates inconvenience in the work. There is also a risk of burns to the eyes and ignition of clothing.
If the disk rotates on itself, these disadvantages can be eliminated. But in this option, there is a risk of serious injury. If the abrasive is jammed while working, the tool will hit the operator’s hands or face hard.
There is no uniform rule for setting rotation, and if this is important, the information should be indicated on the tool itself. In any case, the direction of the machine must be chosen by the operator himself depending on the material to be processed, as well as for his convenience
The information provided is enough to understand which side to put the disc on the angle grinder and why it is important to set the abrasive correctly
Dangerous mistakes when working with an angle grinder that you’d better not make
Those who are just starting to work with an angle grinder sometimes make many mistakes, each of which can end tragically. Our article includes tips from the experts.
Angle grinder or, as it is called in common parlance, angle grinder. is the best tool for longitudinal and transverse sawing of metal structures, not to mention the “profile” sanding. When it is used correctly, you can do the job quickly and efficiently, and when it is used incorrectly Professionals know that this is one of the most dangerous power tools: disk rotation speed can reach 12,000 rpm. What serious mistakes are usually made when working with an angle grinder?
1 Mounting a oversized disc
For each device is suitable for a certain size of grinding disc, which is listed in the data sheet of the angle grinder. If the item “cutting disc” has a value of 125 mm, this indicates that 125 mm is the maximum diameter that can be mounted on the unit. It often happens that the operator puts a larger disc on the angle grinder to cut thicker metal or a more dimensional structure. How is this dangerous??
First, in order to put a bigger disc, you have to remove the guard, because the disc might simply not fit. the operator is no longer protected and, if the blade is damaged, it can be injured by splinters.
Secondly, the probability of damage to the cutting disk due to an incompatible speed increases. Note that for each disc size there are their allowable rpm for the angle grinder, at which they will work: for circles up to 125 mm diameter 11000. 12000 rpm, for circles up to 180 mm diameter 8000. 8500 rpm, for circles up to 230 mm diameter 6700 rpm. That is, large discs can be cut at reduced speeds, and small ones at higher speeds. It is worth noting that the linear velocity of the edge of the disk should not be more than 80 m/s, so when you increase the diameter you need to reduce the speed. At high RPM a large disc will break into pieces, which is dangerous for the operator.
Conclusion: do not exceed the maximum disc size under any circumstances. If you need to cut thick metal, it is better to buy a device for large disks, such as Zubr angle grinder P230-2100 PV.
2 Using cheap “non native” blades
Sometimes the operator puts a cheap disc on the machine to save money. Often such discs are crooked or their material is very soft. In either case, the disk when cutting metal (especially thick) flies around the room as poplar fuzz in May.
To avoid breaking the wheel and to be safe use good quality diamond and metal discs. It is best to buy brand-name discs from a reputable brand. preferably the same brand that produced your angle grinder. For example, a disc from Bosch with a maximum cutting disc size of 125 mm would work well with a universal disc from Bosch Standard for Metal 125×1.6×22.23.
Conclusion: the use of cheap grinding wheels will lead to unnecessary costs and the possibility of injury. It is better to use original quality wheels.
3 Working without a shroud
Many intrepid builders neglect safety procedures and work without a safety guard on the angle grinder. However, there is a possibility that the disc will bite while working and, when shocked, the disc will break into pieces and cause damage all around. The safety guard absorbs the brunt of the impact, and its absence can cause injury (and in some cases death) to the operator.
Another mistake is not using personal protective equipment, such as safety glasses or a mask, or earphones. When the disk breaks, shards begin to fly in different directions and often end up in the face. Goggles or a mask will protect the eyes from being hit by splinters. Also, goggles will protect against sparks in the eyes, because when you cut, sparks fly in a tight beam in the direction of the person.
The permissible operating noise level for a power tool is 80 dB, according to the regulations. Above this value, the person must wear hearing protection. Note that the average noise level of angle grinders is 90. 100 dB, which means that everyone who works with an angle grinder should protect their ears with headphones.
Angle Grinder Set up
Conclusion: Before starting work, check the protective cover on the device, and wear goggles and headphones.
4 Incorrect cutting direction
Many workers are uncomfortable with sparks flying toward them when they’re cutting metal. Because of this allegedly bad visibility of the cutting line for the trimmer, so it takes longer to do the work. For this reason, many people cut with sparks “away from themselves,” thereby violating safety precautions and exposing themselves to serious danger.
If we work with sparks “on our own”, the disk rotates in our direction. If the disc jams and the angle grinder is ripped out of our hands, the disc’s flight path is directed in our direction. Blade at speed of 11000 rpm easily cuts everything in its path, and the body of the operator will not be an obstacle for it. That’s why you should always cut with sparks “on oneself”. in this case the disk will fly forward and won’t hurt a person.
There is an opinion that sawing with sparks “on oneself” may cause clothes to ignite. This problem is solved by wearing overalls when repairing with power tools, which can be purchased inexpensively at any construction store.
Conclusion: You should ONLY cut metal with sparks on your body while wearing proper protective clothing.
Using a tile cutting cover
The versions of the hoods in question are suitable for dust extraction in concrete, brick, cinder block and wood processing
When cutting tiles one important condition must be taken into account. precision of the cut. When working, it is necessary to see the mark on which the power tool is guided, thereby making the cut
It is impossible to see the disk through steel or plastic shrouds, so when using a tool for tiles or ceramics, it is relevant to make it from transparent materials
The easiest way to do this is with a plastic bottle
It is impossible to see the disk through steel or plastic covers, so when using a device for tile or ceramic, it is relevant to make it from transparent materials. The easiest option for this is a plastic bottle.
It is not difficult to make a cover out of a plastic bottle, and to do this you need to make one hole in the wall to install it on the shaft, and connect the hose from a vacuum cleaner to the neck
In this case, it does not matter for what brand of angular grinder manufactured fixture. Bosch, Interskol, Makita, Diold and others. All tools from different manufacturers have a similar design, so the manufacturing principle is the same for all
The movement of the rotating diamond disc can be monitored through the transparent cover
And it is recommended to use a solid disc for ceramics, as segmented discs contribute to the formation of chips, and as a result can damage the material. Cutting should be performed in one pass, otherwise the tile will be cut unevenly. After making the cover for the angle grinder under the vacuum cleaner you can test it in operation and see for yourself how useful it is
You can control the movement of the diamond rotating disc through the transparent cover. And it is recommended to use a solid disc for ceramics, because the segmented discs contribute to splintering, and the result can damage the material. And cutting should be performed in one pass, otherwise the tile will be cut unevenly. Having made a homemade cover for angle grinder under the vacuum cleaner, you can test it in action, making sure of the usefulness of such a device.
This is interesting! , And when you make it yourself, there is no need to spend money at all, because the necessary materials can be found in the garage.
Materials and tools required
To begin with, you need to gather all the necessary improvised materials, which will help to carry out the installation of this equipment. It is very easy to do this, since often all the necessary materials are at home or in the nearest fixing store. The basic items that will be needed include:
It is also important to prepare tools. They will help you to assemble the cover correctly so that it serves long and reliable
The following techniques and equipment will be required:
- Electric screwdriver;
- construction hair dryer;
- step drills;
- cutting disc;
- vacuum cleaner;
- grinding diamond bowl;
- angle grinder, marker and screwdriver.
Of course, you also need the angle grinder itself, to which the cover is made. It is needed for the final phase of the work. Once all tools and materials are assembled, you can begin the main process.
Dustcover for angle grinder with their own hands
Hello, dear readers and do-it-yourselfers!Many of you have had to work with an angle grinder, and perhaps even engage in grinding concrete with a diamond bowl. Then you know how much dust is produced by this process.In this article, the author of the YouTube channel “Men’s Craft” will tell you how you can quickly make a special hood for dust removal.This homemade device is very easy to make, and is made from available materials using a minimum number of tools.
Materials.- 160 mm diameter blanking piece for a PVC corner. Rubber band. One second glue. Steel clamp. Self-tapping screws with press washer. Sandpaper.
Tools used by the author.- Electric screwdriver- Crowns- Step drills- Construction hair dryer- Angle grinder- Cutting disc- Concrete diamond cup grinder- Vacuum cleaner- Angle, ruler, marker, screwdriver, file, metal scissors.
Process of manufacturing.The base for the cap is a blank PVC pipe stub of 160 mm in diameter. The craftsman marks out the center on it and drills the hole with a step drill.
Using a technical hair dryer, heats up the plastic around the hole, and expands it with a screwdriver handle.Repeating the heating process, insert the plastic corner in the hole. The edges of the hole are slightly longer, the author cuts them off with an angle grinder, leaving about 15 mm of excess. Smooths the edges with a file.
Also drills a hole in the plug for the dust extraction pipe.The front flanks of the plug should also be shortened a bit.
he decided to make the dust extraction pipe from PVC.Heats up the plastic, and inserts a corner like this. You can additionally fix the joints with hot glue.
For better compression of the neck of the housing around the gearbox, a small notch is made. Now the craftsman measures out the rubber band to the required length, and cuts it off with scissors.At one edge of the tape is made a lot of cuts, it is necessary to increase its elasticity, and a tighter contact with the surface.Now the tape is glued with seconds glue around the perimeter of the body.
Almost everything is ready, a clamp is put on the neck, the shell is mounted on the angle grinder, and secured with a screw. The craftsman has also installed a diamond grinding cup on the concrete.
For more reliability, the band is additionally fixed with self-drilling screws with press washers.
That is all, you can connect a vacuum cleaner and treat the walls, level their surfaces or remove paint.
Thank you to the author for a simple but useful construction tool to help you work without dust!To all good mood, good luck, and interesting ideas!
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Dust-collecting nozzle for angle grinder model for 3D printer
Hello, dear readers and do-it-yourselfers!Many of you have cut chinks in concrete and other materials, and know how much dust is produced as a result of this process.In this article Andrew, the author of YouTube channel “Shayter Andrey”, suggests you to make a special nozzle for the angle grinder.This handy thing will require a 3D printer, and in big cities you can order this service for very little money.
Tools used by the author.- 360 Watt 3D printer. angle grinder. electronic caliper. industrial vacuum cleaner.
The fabrication process.All elements of the model for the 3D printer can be downloaded from the link, kindly provided by Andrei.
To reduce the degree of clogging of vacuum cleaner filters, it is worth using a cyclone filter, which you can make yourself, reading this article.So, the nozzle is printed, and is designed for a shroud width of 21 mm and the distance from its back to the center of the disk 6 mm.The author fixed the wheels on the nozzle by simply gluing a washer to the base. You can press the roller itself with a washer using a self-tapping screw with a press washer.
It’s also very easy to reverse the hood and change the head’s position. That’s handy for people who like to cut on their own or cut away from them. The cutting process itself is very simple. It is sufficient to first press the rollers of the head against the surface, and then to plunge the cutting disk.The nozzle sits on the housing very firmly, and to remove it, just a light blow on its heel.You can also modify the hole, in which the edge of the protective casing enters.That’s all, now you can connect a vacuum cleaner, and carry out installation work without dust.Thank you to the author for a simple but useful device for the angle grinder!Good mood, good luck, and interesting ideas!Original video you can find here.
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An accessory on the angular grinder for slotting Hilti DC EX 125/5M. review, instruction.
When the amount of wiring replacement and Strobeling of walls for laying cable is not big, such as your own apartment or a single object, of course, spend money on professional Stroborezami few people will.
The best option in this case is an inexpensive attachment for angle grinder. One of the popular examples of such a hood can be found at Hilti. Its brand is Hilti DC EX 125/5M.
This tool can easily cut up to 1000 meters of mortises in a month. The most important thing is to choose the right diamond blades.
It is designed for angle grinder with 125mm discs. The cutting width is up to 25mm, and the depth with the new discs is 28mm. Some people think it is not enough, but do not forget that this is still angle grinder, and not a complete chisel saw.
It is not necessary to chase after a wide slot. As you increase the cut, you significantly increase the radial load. And all this will be primarily reflected in the spindle. How long would a gearbox of such an angle grinder last??
The same applies to those who like to install discs of large size. Thus you will increase not only the mechanical loads but also the currents.
The main technical parameters of the hood are as follows:
The designations of its main controls:
Together with the nozzle, you need to have the following attachments:
In order to put the hood on the angle grinder it must be opened. To do this, the upper part, the so-called front clip, is hinged.
In the process, it opens so that you can comfortably ream under the ceiling or make a cut into a corner. True, not everyone gets to work fully in this case, as the angle grinder gouge cutter can start to dust very badly.
In this situation, the so-called dive function saves the day:
With this method, dust generation will be almost the same as with the closed front part.
And here’s a video of a not quite successful corner cut:
To loosen the cover completely, press the locking element on the spring with your finger (the switch with the lock) and the nozzle opens.
Dress the outside of the angle grinder. A small backlash is allowed. If they are not, you may have problems turning the tool when removing it.
The next step is to install the diamond discs. It is possible to install one or two disks.
Most often two are installed, as in this case the grooves are made, which perfectly form the future hole.
When selecting discs pay attention to the material with which they are designed to work:
Quality diamond discs, without changing them, masters cut through to 1000m of notches, even in reinforced concrete. With enough skill for a couple of working days really go 100 meters in the monolith.
The casing is supplied with lantern rings. They have different thicknesses and allow you to adjust the place of installation of discs and, accordingly, the thickness of the chisel.
Cool idea from a angle grinder! I wish I’d known about it before!
Kwik-Lock quick-clamping nuts are supplied with some angle grinders.
They allow tightening the discs without using a special key, just by hand.
Remember that for applications with a single diamond disc, the use of such a nut is allowed, but when drilling with two discs, only the original wrench nut must be tightened.
Another important thing to pay attention to when installing discs is the direction of rotation.