Grinder from a belt sander do it yourself
How To Make A Homemade Belt Sander [ Angle Grinder Hack ]
Longitudinal pipe and its purpose
The transverse pipe is ready, but now you need to weld the longitudinal pipe to it, which will serve as a support for the sanding tape. It should go exactly in the middle of the leading roller (we will dwell on its manufacture later).
After the longitudinal profile pipe is welded into place, you can cut off the excess, plug the hole from the end and clean all the seams. This will make the product look much neater.
Small addition to the design
Despite the fact that the Grinder is already capable of grinding small parts, it needs one more part. a platform. It will serve as a reference platform, which will increase the speed and quality of work. It can be made from a metal tire that is cut to size and welded to the base of the nozzle so that this platform prevents the strip of sandpaper from going inside, supporting it. This is already a small work that will not take long.
The result of all the work described today should be a mini-Grinder, which, if necessary, can be easily transformed back into an angle grinder.
Grinder tensioning mechanism, and how it works
Now you can start the third part of the grinder. the tensioning mechanism. To do this, you need just a profile pipe 15 × 15 mm and 20 × 20 mm, as well as a bearing. First, 2 small sections of shaped pipes of different sizes are welded in length. After that, a hole with a diameter of 8 mm is drilled in the larger part.
The thicker side is trimmed slightly above the holes, and its entire side portions are sawn lengthwise. You should get a groove into which the bearing will easily pass. Perhaps, in words, everything seems complicated, but in fact, these are elementary actions.
As a result, the bearing easily falls into place, and after fixing with the drill shank it rotates easily, which is what is required at the moment. Now you need to align and cut the drill flush with the metal and grab. One welding point per side is enough.
Clamp for angle grinder on profile tube
However, such a ring cannot be clamped on a circle, which means that you need to make some kind of a clamp. To do this, it is necessary to drill through the profile pipe in the area of the welded steel ring. Next, cuts are made (one along, the second across the profile pipe). It may be difficult to understand the location of these cuts in the text, and therefore we will show with an example.
Now it remains to make a thread on one side of the cut, and expand the second hole. It turns out that when screwing the bolt into the thread, it will be able to reduce the circumference of the clamp by the width of the cut. At this stage, it is worth checking if the clamp is clamped well. If the structure is loose, the kerf should be increased.
Making a leading roller for a belt on an angle grinder
It is best to use wood for making a roller, but a 14 high wheel nut is perfect for the core. It is ideally screwed onto the drive shaft of an angle grinder.
First of all, you need to make small cuts on the splines of the nut. they will help it to hold tightly inside the wooden roller on epoxy glue. Risks are made both transverse and longitudinal.
Grinder from a grinder: an easy way to make your own hands
Very often, for various jobs, the home craftsman needs exactly the Grinder, especially if it is necessary to do minor work or crawl into hard-to-reach places. But it makes no sense to purchase a mini-Grinder for one-time work. It is much easier to make an attachment for an angle grinder with your own hands. His own version of the solution to this issue is offered by the author of the YouTube channel Mikhail, who collected such a nozzle from scrap materials that can be found in almost any garage or workshop.
How to make a roller without a lathe
In fact, everything is not as complicated as it seems. To begin with, a hole is made in a wooden cube using a 25-inch pen. This size is enough for the nut to fit inside.
Then a nut is placed inside the hole, and all the voids between the metal and the wood are filled with epoxy glue. We can say that the work has been completed for the current day. There will be nothing to do for the next 12-15 hours, the glue should dry completely.
After the required time has elapsed, the side edges of the cube are cut off (using a chisel). The rest of the work is done with a rasp. A screw is screwed into the nut, the future roller is fixed on the shaft of a conventional sharpening machine, after which it is shaped. Thus, a roller for the future grinder is obtained.
Mini Grinder of Belt Sander
An ordinary sander can be indispensable for a garage or workshop. But when you need to grind off the edges of a small product or clean up a small workpiece, it is not always convenient to use a hand-held power tool. A mini Grinder with a turntable comes to the rescue.
For example, we will assemble such a table and a bed for holding a grinder. To do this, you will need: an electric drill, an angle grinder (angle grinder), a welding machine, several small tubes (of various diameters), a metal plate, pieces of rectangular and square pipes, a spring, washers, several bolts of various lengths and nuts.
Everything is assembled very simply by welding. First, we will make a plate (it is also a holder for a typewriter). We measure the length we need, cut off and weld the nuts according to the distances between the holes in the body. Next, we weld a tube of smaller diameter to the plate.
Mini grinder manufacturing process
At the next stage, we start making the bed. Weld a square pipe of the required length perpendicularly to a pipe of a larger diameter. On the reverse side, we make a hole and weld the nut (it will serve as a stopper for the inner tube).
We weld a plate to this pipe on the reverse side, which will play the role of a table for fixing on a workbench.
Making a turntable doesn’t take long. A tube is welded to the machine holder parallel to the installed machine. We insert another tube into it (having previously welded a nut to one part of it, and one more tube to the back. at an angle of 90 degrees to the edge).
Having connected these parts, we install the spring and tighten it with a bolt, through a washer. We also install a locking nut for the bolt in the perpendicular tube. We weld a piece of rectangular pipe to another tube, this is our table.
Putting the Mini Grinder together and it’s ready to go. The turntable allows you to work at the right angles. For more detailed manufacturing and assembly, see this video.
Which engine to choose
The washing machine motor is often used to create a homemade grinder.
The choice of an electric motor must be taken as seriously as possible, since it mainly depends on how well the device will work.
The most suitable choice is a single-phase motor, which has a power of about 800 watts. Devices equipped with such an electric motor are suitable not only for wood processing, but also for hardened steel.
Important! If an open engine is used, as in some models of grinders, you will have to take care of its protection from fine metal dust. For example, from a plastic bottle or other container, you can cut out a shield with a knife and close the motor with it.
Grinder schematic diagram
The scheme is definitely needed when creating a mini-grinder at home.
Every person who is going to make a grinder on his own should familiarize himself with his drawing in advance. This will help you better understand exactly what elements the device consists of and understand the main features of its operation.
The main structural elements include the following:
- Abrasive belt.
- Electrical engine.
The main element is the electric motor. It is with its help that torque is supplied to the rollers. Therefore, in order for the LShM to function well, it must be equipped with a powerful motor.
The tensioning mechanism, and how it works
Sanding belt is often used as a grinding blade
Another detail that must be present in the belt sander ginder is the tensioning mechanism. It is made of bearings and a profile pipe with a diameter of about 20 mm. This element is needed to control the belt tension during operation. It is with the help of this mechanism that the weakening and strengthening of the tape is performed.
What is required to make a mini grinder
First you need to familiarize yourself with the list of materials that will be needed to make a Grinder from a belt sander with your own hands. To create such a structure, you must prepare the following parts in advance:
- metal tape 3-4 mm thick;
- profile pipe with a diameter of 20 mm;
- bearing with an inner diameter of at least 7 mm;
- nut 14 mm.
Important! If necessary, several additional shaped pipes can be added, which will increase the strength of the structure.
Advantages and disadvantages of a homemade grinder
Homemade grinders have a number of advantages and disadvantages. The main benefits include the following:
- the ability to process surfaces of both large and small parts;
- uniform stitching;
- more reliable positioning of the machine relative to the workpiece.
Among the disadvantages is the complexity of use. You will have to practice a lot to master such an instrument well.
Longitudinal pipe and its purpose
When creating a grinder from a grinder with your own hands, a longitudinal pipe must be added. It is worth noting that many people do not know exactly what they are using it for. It is necessary when creating additional support for the emery belt.
Place it in the center of the drive roller. At the same time, it is attached to the transverse pipe. In order for the structure to be more reliable and withstand heavy loads, it is necessary to connect it by welding.
Detailed instructions for making a grinder from a belt sander
Home craftsmen often face situations when they need to use a grinder when doing work. Some people do not want to buy it and decide to make a tool with their own hands. The easiest way to make a Grinder is from a grinder. However, before you start manufacturing, you need to familiarize yourself with the main nuances of creating such a mini-machine.
Grinder is an indispensable tool that is used for grinding various materials
Basic structural elements
Our sander consists of the following elements:
- The angle grinder itself;
- Movable bracket;
- Driving roller (on the gearbox shaft of the angle grinder);
- Two driven rollers. one on the base, the other on a movable arm.
Assembling and installing the sanding belt
It is better to cut the sanding belt with a knife on a ruler, since it will not be possible to cut off with scissors exactly with scissors. So, the width of the tape should not exceed the width of the roller. Also, it should not have visible defects.
The sanding belt is tensioned by a special bolt that moves the movable bracket to the side.
How To Make A Angle Grinder Belt Sander || Angle Grinder Attachment
Drill a through hole and insert the bolt as shown in the picture.
Adjust the bolt so that it does not interfere with the belt run. It should be remembered that the angle grinder works at high speeds, and if the belt gets caught on one of the elements, the master may be injured.
Making a grinder
There are many modifications of grinding devices, but the design given in this article is, in our opinion, very interesting and rather successful, since it is compact and convenient to use. By design, such a tool is a slingshot-shaped device that is attached to an angle grinder. On the “mustache” rollers are installed that form the track of the belt of the grinder.
In this article, step-by-step instructions for creating a grinder from an angle grinder will be described with detailed photos, drawings and videos of all the necessary operations. As a result, you should get the following construction.
The movable bracket is marked in place based on the size of the sanding belt.
First, you need to make all the measurements, then drill the holes for the roller shafts. After that, the shape and design of the movable bracket is marked.
Preparing the angle grinder
In our case, we did not take a new angle grinder, which means that it should be cleaned. It is necessary to remove all excess grease, and remove visible defects and debris with a brush. This stage does not carry a functional load, but thanks to cleaning, nothing will interfere during work, and it will be more convenient and much more pleasant to perform certain stages of work.
Bonding and grinding
After the blanks for the rollers are cut out, you need to glue them together using PVA glue or wood glue. It is advisable to leave the rollers to dry under the press for about a day.
After gluing, you can start grinding the rollers. The easiest way is to use a grinder. Grind off any sharp edges and give them a rounded look. For ease of grinding, the rollers can be put on several bearings and the structure can be tightened with a bolt and nut.
The same procedure is done with the drive roller for the future angle grinder. To speed up work, you can turn on the angle grinder during cleaning.