How to make a polishing machine from a grinder

Grinder from a grinder: drawings for manufacturing and photos

A homemade grain grinder can be made from an ordinary angle grinder (grinder), this article provides drawings of a grain grinder from a grinder, as well as photos and videos of making this homemade product.

This version of the crusher, of course, is not designed for large volumes of grain, but for the manufacture of skins or mixed feed for chickens or a small number of chickens, it is quite suitable.

If you need to quickly make a simple and practical grain crusher, you will need the following materials:

• Angle grinder.
• Used metal saw blade.
• A piece of thick plywood.
• Metal bracket.
• Bolts, washers, nuts.
• 5 liter plastic bottle.
• Metal sieve or saucepan.

From these materials we will make a homemade grain crusher, but first, let’s get acquainted with the drawings of a grain crusher from a grinder.

Grinder from grinder manufacturing process.

Let’s start with making the base, for this we need a piece of thick plywood in which we will cut holes for the body and the shaft of the grinder, as well as a hole for the hopper for filling grain.

You can fix the sander in the base with a metal bracket and bolts.

Now we will make a knife for our grain crusher; you can cut a knife from a metal disk from an electric saw. The edges of the knife need to be sharpened.

To make the working chamber of the crusher, you need a metal sieve or any suitable container with a diameter of about 20 cm, a depth of no more than 5 cm.In the container, you need to make holes of the same size with a diameter of about 3 mm, in fact you need to make a sieve, the size of the grinding will depend on the size of the holes in the sieve.

The sieve is bolted to the base of the grain crusher.

The crusher is almost ready, now we will make a bunker for filling grain, as an option, you can adapt a 5 liter plastic bottle, cut off the bottom in the bottle and insert the neck into the hole in the base of the crusher.

A homemade grain crusher from a grinder is ready to use, I also recommend watching a video showing the crusher in operation.

Necessary materials

In order to make a milling bed for a grinder with your own hands, you will need the following parts, which are probably in the workshop, in the garage or in the country house of each master:

• two steel profiles (one must be wider than the other so that it can freely enter it) of square or rectangular cross-section for the manufacture of the supporting structures of the bed;
• metal sheet (steel or stainless steel) 7-9 mm thick for the sole and other structural units;
• a grinder or a drill with a grinding wheel and a half-casing removed (and for a drill with a chuck, respectively, so that the axial shaft is open);
• an old drill chuck (it will have to be modified, after which it will no longer be possible to use it for drills). it will be a “nozzle” for the cutter;
• fasteners: bolts, clamps, nuts.

Important. To work on metal, the workshop must have a vise, a saw blade (with teeth for cutting metal), an electric drill (hand or machine), a grinding wheel, electric welding, drawing instruments for preparing layouts (including a chemical pencil, crayons or markers).

Materials used

Making a do-it-yourself milling cutter from a grinder to equip a home workshop requires certain conditions, the main of which are to ensure reliable fixation of the power tool in the vertical plane and its movement relative to the surface of the workpiece.

Grinder fixing scheme

In order to make your own milling machine from a grinder that meets the above conditions, you will need the following components and consumables:

building a polishing machine from old bits

• a grinder or an electric drill, the drive motor of which must be in working condition (in addition, the structural elements with which these devices will be fixed on the supporting structure must be sufficiently strong and reliable);
• the base on which the future milling cutter will be fixed (as such a base, which should be highly reliable and stable, and also ensure the convenience of working with a home-made milling unit, the surface of the desktop or workbench can be used);
• thick plywood or thin sheet metal (from which you will make with your own hands that part of the router structure on which the grinder or electric drill will be fixed);
• welding machine (if sheet metal will be used in the design of your router);
• fasteners (clamps, screws, bolts and nuts);
• standard set of locksmith tools.

Option for placing the grinder in a homemade machine

Thus, to make a router from a grinder with your own hands, you will need materials that are found in almost every home workshop or in any garage. Accordingly, to make such a machine and start using it, significant financial investments will not be required, which cannot be said about the situation when a serial model of such a device is purchased.

Step-by-step instruction

Before the master begins the direct assembly of a homemade router, you will have to spend time to make the components and parts of the bed. To do this, the master:

• cuts a steel sheet and cuts out a rectangular blank from one part. a sole is made from it. On it, the central axis is outlined between the two lateral (short) sides. Then a semicircular hole with a diameter of 1-3 times the length of the side is drawn with the center of the circle located on the axial perpendicular, at a distance of 1.5 cm from the end of the side. Along a line parallel to the lateral side from the diametrically distant points of the semicircle to the sides, two segments of 1-1.5 cm are drawn. Then, from them, another segment at an angle of about 60 o to the lateral side. The result should be a dome-like figure resting on a flat trapezoid.
• The workpiece is clamped in a vice and, with the help of a grinder, is cut along the drawn lines. The sharp edges are then sanded for safety. The sole is ready.
• Now the hanging “braid” for the grinder is being designed. With the help of a drill and a special ring nozzle, a circle is drilled out of a metal workpiece, calculated according to the shape and size of the grinder. it will lie on this braid, fixing itself from below with a chuck with a cutter.
• Then, before cutting out the part, it is recommended to prepare a stencil from cardboard. In shape, it resembles a “circle with triangular ears”, which are then grinded at the circle and along the edges. After that, the stencil is superimposed on the metal of the workpiece, so that the hole for the grinder’s chuck is located in the center of the circle. After that, the metal is cut according to the stencil.
• Supports of the same height are cut from one profile (smaller in height), which are welded parallel to each other at an equal distance from the central axis of the sole.
• From the second profile (the cross-sectional height of which is greater), “cubes-sleds” of the same size are cut out, which freely “slide” along the “rails” welded to the sole.
• The “ears” of the workpiece are sawn off and welded to the sliding cubes so that it can slide down and up along the guides on them.
• In the upper part of the workpiece circle, another slotted hole of 2-3 mm is sawn, after which it is welded onto it by welding: on one side of the resulting arc. a nut, and on the other. a screw. This is done in such a way that when screwing in, the circle decreases in diameter, and the grinder with the chuck is tightly fixed in it horizontally.
• To fix the grinder on the “carriage” obtained from the workpiece, additional oval “ears” are cut out of the metal, in the upper part of which holes are drilled that match in size with the side bolts on the grinder. The lower part is folded at a 90 degree angle in a vice. After that, the ears are welded to the carriage. For ease of use, instead of a bolt, you can screw a double-sided holder into one of the “ears”, onto which the handle from the grinder will be screwed.
• In each of the cubes, the slide is also drilled through the hole and welded onto it with a nut, which, in combination with the fasteners, will lock the carriage at the desired height.
• Manufacturing of a collet for a cutter. An old chuck is taken from a drill and in the hole along the shaft, with the help of a tap, a thread is cut under the axis of the grinder. The thread of the tap is selected according to the sample of the nut that secures the grinding disc to the shaft.
• The details of the resulting structure are sanded and blown. It is recommended to paint the frame for aesthetics and to protect the assemblies from dust.

After the assembly is completed, the grinder is placed on the carriage, fixed with a disk clamp. Then the cartridge is installed, the cutter is mounted in it, and the installation is fixed in height with clamps on the “slide”.

Thus, using this model and making a milling bed in a home workshop, the master gets at his disposal a specialized attachment for the grinder, which will perform all the necessary woodwork and will in no way be inferior to industrial, often expensive samples.

How to make a simple homemade router from a grinder with your own hands

A disc angle grinder or, in common parlance, “grinder” is an indispensable tool in the arsenal of every master. In addition to its functional versatility, experienced craftsmen can share some “secrets” and tell how other equally useful power tools are made on the basis of the grinder.

These include a hand-held milling cutter. a specialized tool for woodworking. If it is needed for a certain type of work, and there is neither time nor desire to buy it, the masters will tell you how to make its analogue in a home workshop.

Final Step: Checking Tool Functionality

The excitement vanished as soon as the button was pressed. Fraser behaved beautifully. The only drawback was the imperfect smoothness of the sole, which did not slide very well over the surface of the chipboard. However, the unit was doing its work, and this was already pleasing.

The first launch of a hand router: at first glance, almost no complaints

After going through the first strip and choosing a groove in the chipboard, it seemed to me that something was missing. The not too even edges of the chosen track spoke about the same. It seemed that the hands of the master who made it were shaking.

The edges of the selected groove are rather uneven and something needs to be addressed with this

After a little reflection, I got it. After all, I had to make an effort, and without the native handle from the grinder, it is not very convenient to do this. But in the form in which it is, you cannot put it in its place. the guide of the bed interferes. A wide nut and a piece of hairpin came to the rescue again. The nut was screwed on one side of the handle, on the other side I screwed in the pin. The resulting structure fixed the corner instead of one of the bolts.

This is the handle that our mini-milling machine has got.

After the performed manipulations, the work became much easier, and the edges of the selected grooves are smoother. This means that at the moment it was not worth inventing anything new with our router. Perhaps later, thoughts will come about how to make the base platform more mobile, reducing the friction force, but so far I was satisfied with the final result.

Step three: prepare the bed for the mini milling cutter

Firstly, here it was necessary to cut two pieces of a square profile 20 × 20 mm, 20 cm long and two more. 25 × 25 mm, 2.5-3 cm long. This can be done both on a machine and using a simple grinder. It seemed to me more convenient to use the machine.

We cut a metal square profile into pieces of the required length

Design

A manual milling cutter is a device with a milling cutter rotating in a chuck, mounted vertically on the supports of a special bed platform. The lifting height of the cutter relative to the platform sole is regulated by the locking blocks and allows the working surface to enter the wooden workpiece to the depth set by the master. This allows both sawing wood and applying decorative recesses, and making grooves and holes of various configurations.

Making a milling cutter with your own hands from a grinder will require time and some effort from the master, but the resulting wood milling machine will not differ in its characteristics from industrial models and, if it is necessary to carry out carpentry work, will cope with the tasks.

When designing a router, instead of a grinder, you can use an electric drill. the only difference will be in the configuration of the fastening mechanism, since the rotating shaft of the scraper is located perpendicular to its body, and the shaft of the drill is installed along it.

With the exception of this design feature, in both cases, the main thing that the master has to do is to make a bed platform on which the selected power tool will be mounted, and to make a collet from the old drill chuck that holds the cutter.

Finished nozzle for angle grinders

The simplest thing is to purchase a ready-made grinder and mount it on the angle grinder. The photo shows that the installation of the mechanism is not particularly difficult. It is enough to attach the bracket with rollers to the angle grinder after removing the protective cover. The drive wheel is fixed on the angle grinder shaft. The sandpaper is put on the rollers, and the sander is ready to work.

For convenience, you can fix the device to the table using clamps.

Reducing costs, but at the same time limiting the possibilities of using the grinder, allows the attachment, consisting of a bar with two rollers. The device allows you to make a grinder from a grinder in a matter of minutes. The attachment has a standard mount, suitable for mounting on an angle grinder.

The design of such a mechanism is intended for cleaning welded seams. It is quite difficult to polish wooden products with such a gadget. However, if it is rigidly fixed on the table, it can be successfully used as a sharpening machine for dressing cutting tools or sharpening knives, axes, etc.

Such a device is also produced by the industry, but it is extremely rare to find it on sale.

Homemade mechanisms for angle grinders

In order not to look for ready-made nozzles, you can try to make them yourself. There are different options for making such devices, which will be discussed below.

From the remnants of a professional pipe

With the skills of a welder, you can easily convert an existing grinder in your home workshop into a grinder. It is enough for this

• weld trims of a corner or square pipe in the shape of the letter y;
• fasten suitable rollers at the ends;
• screw the drive shaft to the shaft of the angle grinder;
• mount the sanding pad and the device is ready for use.

With this grinder, you can perform various operations:

• clean up the unevenness of the metal after welding;
• complete grinding of the part;
• handle wood products;
• make final, finishing, processing before coating the part with varnish;
• handle uneven concrete walls.

To sand or sand various surfaces, you should select a sanding cloth designed for the material being processed.

Plywood

First of all, consider the option of how you can make a simple grinder from a grinder with your own hands. The simplest version of the grinder is obtained from angle grinder, two rollers, a tensioning mechanism and a plywood base.

For manufacturing, you need thick plywood. this is an affordable and inexpensive material.

The hardest part of this design is making the rollers. It’s good if your home workshop has a milling machine or hand router. To do this, a suitable workpiece is milled out of plywood by a milling cutter, processed on a grinding machine, bearings are pressed in.

A base is cut from the same plywood, in which a hole is cut for a grinder. Places for the rollers are marked, after which the angle grinder is fixed and the wheels are mounted. Previously it is necessary to treat the polished wheels with varnish. After that, the entire system is assembled, and the grinder from the grinder is ready to work. The design of the device is clear from the presented photograph.

Sheet metal

If the workshop has a welding machine, and a familiar turner will grind the necessary rollers, then you can make a polishing machine from the remains of metal.

For this, the remnants of thick sheet metal, which will be used to make the base, are well suited.

How to make POLISHER MACHINE from ELECTRIC DRILL and old ANGLE GRINDER

Such a device will be no worse than the factory one. It will take a lot of time to make, but it’s worth it. Before starting work, it is necessary to develop working drawings or download them from the Internet. Assembling the mechanism not according to the drawings, you may not achieve the desired result, or the resulting device may turn out to be source of increased danger.

First of all, it is necessary to make an accurate marking of the bed. As an example, we use the following device drawing:

The arrow indicates the diameter, which must be specified depending on the angle grinder used in this design.

Drill holes on milling and drilling machines according to the marking. Then you need to prepare a tension bar, as shown in the photo.

Carve the rollers, and only then proceed with the assembly of the mechanism. The result is a universal attachment, as a power unit of which you can use not only a grinder, but also another suitable electric motor. The finished view is shown in the photo below.

Homemade grinder from a grinder

When performing repair work or making furniture, a specialist simply needs to have a device such as a grinder, which allows him to grind various materials. And when performing welding work, such a mechanism is simply irreplaceable. To buy this device in your own workshop is the desire of any master. However, an industrial sander is quite expensive. And having it without doing it professionally is expensive for the family budget. That is why there is a desire to make it with your own hands from the mechanisms available at hand. A grinder is best suited for these purposes: it can easily be transformed into the necessary power tool.

Safety engineering

When working with a homemade grinder, safety precautions and personal protective equipment should not be neglected. Persons under the age of 18 should not be allowed to work. When using the device, it is imperative to use protective glasses and earplugs to protect the organs of sight and hearing from the harmful effects of external factors. We should not forget about the mask that protects the respiratory system from dust.

In the video below, you can study in detail how and from what to make a grinder. It also gives all the main dimensions of the parts of the mechanism.

Making a machine with a bed

You can also make a cutting machine from a grinder. For this, the following tools and materials should be prepared:

• profile pipe;
• steel corner;
• Metal sheet;
• welding machine;
• drill;
• channel;
• bearings;
• shaft;
• pipe;
• spring;
• pedal relay.

If desired, the sheet of metal that will go to the platform can be replaced by chipboard. The stove will become an easier option. There should be several bearings, they should be the same. If you think about it, welding can be replaced with strong bolts, which is what you need a drill for. This option will allow you to disassemble the machine if necessary.

Features of making homemade products from a broken tool

The grinder is not an eternal thing, therefore, after its failure, you can use the equipment for other homemade products. Sometimes it happens that a motor or gearbox breaks down. The housing may break or the gear teeth may be cut. However, you should not rush to throw away the device. Something one of the two grinder nodes can still work.

If you are deciding what to do with a broken grinder, the engine should be considered. But due to its high speed, it is not often suitable for alterations. This part of the angle grinder can be used as a basis only in the case of making an engraver. You will need to cut off the gearbox and fasten the chuck to the shaft for different nozzles, there are a huge number of them on sale.

If you are still interested in the question of what can be done from a grinder with an engine flying, you can use a gearbox. It is metal, compact and has a powerful bearing on the output shaft. Due to the existing threaded connections, the gearbox has good mounting possibilities. The reducer can be mounted on a drill using a special adapter. But on such tools, the cut-off wheel can be source of danger. Therefore, it is recommended to adapt the gearbox to situations that are far from the original function of the angle grinder. For example, you can make a sander for wood flooring. You can comfortably carry out this dusty job thanks to the speed control and bevel gear. A large area can be covered with a wide disc, which speeds up the process.

Quite often, home craftsmen think about what can be done from the grinder’s gearbox. The tapered assembly is compact, so it can be used for a variety of tuning and adjustment tasks. For example, to adjust the working table on the machine. The gearbox is widely used to create outboard motors. It is possible to solve the issue of sealing the propeller shaft by sealing. Outside the gearbox, an additional oil seal can be installed on the propeller shaft under the trim ring. But in the case of motorized bicycles, an oil seal is not needed.

But if you are still interested in the question of what can be made from a grinder, you can use its gearbox by transferring torque to the wheels. The described unit is installed on the wheel axle. Using a traditional chain, a protective standard casing, you can adapt it as a geared motor holder. The electric motor may not be limited by using an internal combustion engine. The grinder gearbox in this case will be able to withstand even high loads.

Thinking about the question of what can be made from a grinder, you can consider making a coffee grinder. It is suitable for lovers of an active lifestyle who prefer to sit from time to time in the silence of the forest with a cup of fragrant freshly brewed coffee. You don’t have to think about the engine, because the mixer has a special shaft that rotates custom nozzles.

Work on the frame and ruler

The simplest frame will consist of frames mounted on one axis. The lower one must be fixed on the platform. If the tool is large, metal is best. A grinder is screwed to the upper frame, which will rotate vertically according to the principle of a pendulum. A spring is required to lock the home position.

A fastener is welded to the lower frame, which will consist of a clamping angle and a clamp. Measuring parts should be provided in the machine. In this case, a movable ruler with a limiter is better suited. It is welded to the pipe.

Self-development to a cut-off machine

A transverse strip made of metal with two holes for fastening the tool is welded to one of the ends. On the same side, the pipe is fixed to the angle piece on the movable shaft. The first one can be fixed to the work table or to the floor in the work room. If you are faced with the question of what can be made from a grinder, you can make a cutting machine by following the described algorithm. According to him, on the opposite side of the mount, it is necessary to fix the spring, which will ensure the return of the structure to its original position. At the end of this stage, you can use your homemade product. It will only be necessary to correctly install the device.

This version of the machine is the simplest solution for metal processing, while complex work will require precision, therefore, the design for solving such problems must be made more stable, which means that you will have to approach the work more thoroughly.

Making a miter box

You now know what can be done from a burnt grinder. But if the tool has not failed, and you want to expand the range of tasks it performs, you can make a miter box. To do this, the table top is made to rotate. This will allow you to cut a baguette, plinth or profile from different materials at a certain angle.

The table top is installed at an angle, the corresponding disc is mounted, then the cutting is carried out, which turns into a pleasure. With the help of such a homemade machine, you can cut paving slabs diagonally, thereby diversifying the ways of laying it.

Making a wall chaser

What can be done from an old grinder? This question is often asked by home craftsmen. But if your angle grinder is working properly, you can make a wall chaser out of it. By using equipment without modification, you put yourself in danger. In order to avoid risk, you can make a nozzle with a solid base, it will allow you to make cuts in the walls for the entire diameter of the disc.

This addition is a foot in the form of a stop that allows you to move the tool along the wall. At the same time, the efforts will be uniform. When you make such a device, take the time and install a closed cover, which will be complemented by a branch pipe for connecting a vacuum cleaner.

Electronics

In order to make the work more convenient, the design should be supplemented with a switch button or a start pedal. In the first case, a low-voltage relay is used, through which voltage will be supplied to the tool. This uncomplicated design will allow you to free your hands and achieve an even cut without the use of a vice. On this you will also save time, because you do not have to make accurate measurements.