Here we will tell you how to get neodymium magnets for free and where to find them. Many times you need strong magnets in your physics or electronics device projects. Neodymium magnets are strongest magnets in the world. They also come in different grades for use in variety of applications. One of the important application of such strong magnets is in magnetic storage devices. Hard disk drive uses such Neodynium magnets. As such you can find Neodynium magnets in your hard disk drive. So if you want this magnet you can get it from your old and/or damaged hard disk drive.
We will show you how to take out these magnets from Samsung hard disk drive(Model No.: HD161GJ) which has 160GB storage capacity. Also we show neodynium magnets from another Samsung HDD(model no.: SP0802N) which has storage capacity of 80GB.
Lets look at the pictures of these magnets before we show how they were taken out of the HDD. The one below is from Samsung HDD, Model No.: HD161GJ:
Note that the Neodynium magnet is still on their brackets. It is hard to remove them because they are epoxyed on the bracket and also because the magnet strongly adheres to the brackets.
The next one is from the Samsung HDD(model no.: SP0802N) where the Neodymium magnets have been removed.
Here the magnets have been removed from their brackets.
From the two pictures above you might not know which one is larger or their relative size. The magnets from Samsung HDD SP0802N is larger (2 times) than the Samsung HHD HD161GJ. But which is stronger would depend on the grade. If both are of the same grade then we can expect that the larger has higher magnetic field strength.
Now the following figure shows how the Neodynium magnets were recovered from the Samsung HHD HD161GJ.
The Samsung HDD SP0802N is much easier to dissemble and to take out the magnet. Figure below shows the Samsung SP0802N HDD internals and its Neodynium magnets:
So we told you how you can get neodymium magnets for free from old Hard Disk Drives. But there are other places where you can get these strong magnets. The CD/DVD drive also uses neodynium magnets for its operation. These are also strong magnets that you can use in your electronics projects.