How to make emery from a hard drive with your own hands. Do-it-yourself emery from the hard drive Emery from the hard drive stops
If you have an old HDD from the computer, do not rush to throw it away, you can make a small convenient emery from it! The motors in such devices almost never break, and we don't need other parts. These motors are brushless, they develop high revs, withstand heavy loads and are durable.
An interesting homemade product in that with the help of a special one you can control the engine speed. This is very handy when you need to process something very small. The author pasted over both discs on both sides with sandpaper, so they should be enough for a long time. If you are interested in the project, I suggest that you familiarize yourself with it in more detail.
Materials and tools used
List of materials:
- old hard drive;
- sandpaper;
- ;
- connector for power supply;
- power supply unit for 12V / 6A;
- wires;
- materials for the body.
Tool list:
- a screwdriver for untwisting the hard drive;
- soldering iron;
- 3D printer;
- glue.
Emery making process:
Step one. Disassembling the hard drive
You will need to disassemble the hard drive first. In most cases, the cover is secured with hex head screws. And on older versions, the usual cross screws may be found. The screws can be quite tight, so without a good screwdriver it can be difficult to remove them.
After removing the lid, we remove the filter, this is such a white bag, it is designed to collect the smallest dust particles. You also need to remove the read / write head of the hard drive. It is fastened with one screw, and you will also need to remove two powerful neodymium magnets. We also remove the electronic board, we do not need it, even if it is working, there is little sense from it. As a result, only the engine with disks should remain.
Step two. Test engine start
The motor is installed here brushless, which means that it will not work if DC or AC voltage is applied to its contacts. Here you need a special controller that generates a voltage of a special frequency, from which the engine runs. To start the engine, you need to buy a controller, you can order it from China. The controller is convenient in that it has a speed control function. The device can be powered from a voltage of 9V to 12V.
We supply power to the controller, the green LED should light up, which will indicate the operability of the controller. The disk is spinning, everything is fine, let's move on.
Step three. We glue the disks
We remove the disks, in most cases they are aluminum, and there are also glass ones. The author glues sandpaper to them. You can glue the discs on both sides, then you don't have to glue the paper often. You can simply rearrange or flip the disks. As a result, we get 4 work planes. If necessary, you can glue paper of different grain sizes. And if you have more discs, you can make yourself a good supply of sanding discs.
We install the disks back, it is not necessary to tighten all the screws, even 3 should be kept fine, but for reliability it is better to tighten everything.
Step four. Installing the legs
Our machine at high speeds will vibrate quite strongly and if nothing is done, the emery will ride on the table. To solve this problem, the author is screwing rubber feet to the hard disk. They are quite common, you can order from China, or you can make it yourself from rubber, and so on.
Step five. Device case and assembly
The author has a plastic case, he printed it on a 3D printer. A controller is installed in the case, as well as a socket for connecting a power supply and a speed control knob. You can also make such a case from plywood. Auto screws the case to the hard drive with its own screws.
Step six. Testing
That's all, the homemade product is ready, you can test it! The author's emery easily sharpens a knife, and even sparks fly. The revolutions are conveniently regulated, so it is not necessary to turn on the machine so that it works at the limit of its capabilities.
I hope you liked the homemade product, and now you will not throw away the old ones. hard drives... Good luck and creative inspiration, if you decide to repeat this, do not forget to share your ideas and homemade products with us!
Hard disk emery personal computer you can edit and sharpen hand tools, knives or small parts. The main advantage of the device: a minimum amount of tools and auxiliary materials are required for its manufacture. At the same time, the performance of the hard drive does not play a special role: its functions will be completely different.
Today's computer hard drives are not very well suited for this concept. The fact is that on the HDD of the first generations, the magnetic circles were distinguished by their large dimensions. This allows you to expand the range of processed items.
To assemble an emery machine, you must prepare the following materials:
- HDD;
- abrasive material;
- standard power supply;
- power supply connection kit;
- materials for the assembly of the protective casing (at the request of the master);
- rubber caps as a support for the future machine;
- controller for the drive.
The purchase of the last item depends on type of hard disk. We are considering a brushless drive application that will not function on standard AC or DC voltage. The controller is a special unit that generates a voltage of a special frequency for the smooth operation of the electric motor. It operates from a voltage of 9-12 V based on the features specific model... The cost when ordering from China is $ 2.8–3.2.
The main advantage of the controller is the built-in function of manual adjustment of engine speed.
In the process of work, you will need the following tool:
- a set of screwdrivers for disassembling a hard drive;
- small drills;
- screwdriver;
- soldering iron;
- glue.
How to disassemble a hard drive
With the right tools, the disassembly process is a simple task.
The first step is to remove the top cover. Modern models are fastened with several hex head bolts. Older versions are designed to use the classic Phillips screwdriver. If during the entire period of operation the disk has never been disassembled, during the removal of the cover you will have to make quite serious efforts: at the factory, the screws are tightened with a high tightening torque.
The next stage is a complete disassembly of the hard drive. It includes the following steps:
- We dismantle the dust collector. In the image, it appears as a small white detail. Its function was to filter the incoming air from fines that could damage the hard drive.
- We remove the neodymium magnets and the electronic control board. Its performance does not matter: it will not be of value for the future electric emery. Exceptions will be discussed below.
- We remove the read head and all leads except for the power supply.
After carrying out the work, a bare body with a drive and discs should remain.
Assembling mini emery from a hard drive
After preparing the necessary tools and materials, you can start assembling the electric sharpener from the hard drive.
The process begins with the preparation of the abrasive surface. There are two options:
- The nozzle is cut from the sheet along the contour of the disc. An additional hole is made in the center.
- In a hardware store, you can purchase a set of abrasive wheels for a grinder and bring their size to the specified parameters.
The wheels themselves can be made of aluminum alloy or glass. We recommend that you glue the discs on all sides to obtain more processing surfaces. This will increase the interval for their replacement. Use different grit abrasives to expand your machining capabilities. By purchasing sandpaper with a margin, you can make removable nozzles from the remaining material.
Any all-purpose adhesive can be used to attach the attachment to the disc.
After preparing the disks, they are installed back to their original place, tightening all the screws.
Then you should start making a case for the controller. The easiest option is to buy a junction box with dimensions of 100 * 100. These dimensions are sufficient to comfortably accommodate the controller, power socket and engine speed control mechanism. Lovers modern technologies can independently design the case and print it on a 3D printer. It is attached to the hard drive with standard bolts.
The last step is to install rubber feet, which will dampen vibration and provide additional stability during operation. They can be ordered at Aliexpress or made by yourself.
Power connection
There are several options for supplying power to the machine:
- Use a standard PC power supply of a suitable format.
- Disassemble an unnecessary power supply unit for any household appliance that operates with a voltage of 12 volts. The board is withdrawn from it and built into the existing one. electrical circuit machine by soldering electrical wires. Do not forget about installing the standard power supply socket into the machine body.
After that, you can start testing the invention. Please note: the direction of movement of the actuator can be reversed using a switch on the controller.
It is impossible to machine massive tools with this machine. The reason lies in the low power of the classic motor: it runs on ferrite magnets, which have never been particularly powerful.
Magnets made on the basis of rare earth elements are installed in powerful drives.
An alternative option is to replace the existing winding with wires with a large cross-section. This will increase the amperage.
Many inventors who do not use a controller in the design are faced with the following problem: after power is applied, the rotation stops after 10-15 seconds. The reason is the lack of heads. There are several ways to solve this problem:
- Leave the lower head when disassembling.
- Make a separate power supply for the drive.
- Correct the existing wiring diagram.
Subject to availability schematic diagram last option seems to be the most preferable. The task of the master is to block the signals that lead to the engine stop. As a rule, it is enough to remove a few transistors for this.
Hard disk emery is a handy homemade product that can be used to process small tools and household appliances. What do you think about engine power? Perhaps, to increase productivity, it is advisable to use a motor made of aircraft toys? Share your thoughts in the comments.
If you have an old hard drive from your computer, do not rush to throw it away, you can make a small handy emery out of it! The motors in such devices almost never break, and we don't need other parts. These motors are brushless, they develop high revs, withstand heavy loads and are durable. An interesting homemade product in that with the help of a special controller you can control the engine speed. This is very handy when you need to process something very small. The author pasted over both discs on both sides with sandpaper, so they should be enough for a long time. If you are interested in the project, I suggest that you familiarize yourself with it in more detail. Materials and tools used List of materials:
Tool list:
Emery making process: Step one. Disassembling the hard drive
After removing the lid, we remove the filter, this is such a white bag, it is designed to collect the smallest dust particles. You also need to remove the read / write head of the hard drive. It is fastened with one screw, and you will also need to remove two powerful neodymium magnets. We also remove the electronic board, we do not need it, even if it is working, there is little sense from it. As a result, only the engine with disks should remain. Step two. Test engine start
We supply power to the controller, the green LED should light up, which will indicate the operability of the controller. The disk is spinning, everything is fine, let's move on. Step three. We glue the disks
We install the disks back, it is not necessary to tighten all the screws, even 3 should be kept fine, but for reliability it is better to tighten everything. Step four. Installing the legs
Step five. Device case and assembly
Step six. Testing
- old hard drive;
- sandpaper;
- controller for the engine;
- connector for power supply;
- power supply unit for 12V / 6A;
- wires;
- materials for the body.
- a screwdriver for untwisting the hard drive;
- soldering iron;
- 3D printer (optional);
- glue.
You will need to disassemble the hard drive first. In most cases, the cover is secured with hex head screws. And on older versions, the usual cross screws may be found. The screws can be quite tight, so without a good screwdriver it can be difficult to remove them.
The motor is installed here brushless, which means that it will not work if DC or AC voltage is applied to its contacts. Here you need a special controller that generates a voltage of a special frequency, from which the engine runs. To start the engine, you need to buy a controller, you can order it from China. The controller is convenient in that it has a speed control function. The device can be powered from a voltage of 9V to 12V.
We remove the disks, in most cases they are aluminum, and there are also glass ones. The author glues sandpaper to them. You can glue the discs on both sides, then you don't have to glue the paper often. You can simply rearrange or flip the disks. As a result, we get 4 work planes. If necessary, you can glue paper of different grain sizes. And if you have more discs, you can make yourself a good supply of sanding discs.
Our machine at high speeds will vibrate quite strongly and if nothing is done, the emery will ride on the table. To solve this problem, the author is screwing rubber feet to the hard disk. They are quite common, you can order from China, or you can make it yourself from rubber, and so on.
The author has a plastic case, he printed it on a 3D printer. A controller is installed in the case, as well as a socket for connecting a power supply and a speed control knob. You can also make such a case from plywood. Auto screws the case to the hard drive with its own screws.
That's all, the homemade product is ready, you can test it! The author's emery easily sharpens a knife, and even sparks fly. The revolutions are conveniently regulated, so it is not necessary to turn on the machine so that it works at the limit of its capabilities.