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Where To Get Sets and Parts For discussions about swapmeets, rallies, NVCF and BVWS, car boot sales, antique and charity shops, dealers, newspaper adverts, the local tip and just about any other source of equipment (other than eBay).

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Old 4th Jul 2019, 3:35 pm   #1
The Philpott
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Default Inexpensive Neodymium magnets

I have just salvaged a very powerful little magnet (7mm diam. x 2mm thick) from an o/c crankshaft position sensor. (Effectively a freebie)
Not all engine/wheel position or movement sensors are of this type, but plenty are.
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Old 4th Jul 2019, 3:55 pm   #2
Dave Moll
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Default Re: Inexpensive Neodymium magnets

They also appear to available new in similar sizes at about 2.50 for ten.
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Old 5th Jul 2019, 12:10 am   #3
brunel
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Default Re: Inexpensive Neodymium magnets

Old hard drives are also a good source, if you can get into them. Watch your fingers they are very powerful.
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Old 5th Jul 2019, 1:56 am   #4
AC/HL
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Default Re: Inexpensive Neodymium magnets

Old Sky+ boxes.
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Old 5th Jul 2019, 2:48 am   #5
joebog1
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Default Re: Inexpensive Neodymium magnets

Not rare earth magnets, but very strong anyway, and there are hundreds freely available.

Magnetrons.

I leave them in the weather for a couple of months which kills the glue that's used, unclip the heatsink, and you get two very strong round magnets.

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Old 5th Jul 2019, 3:19 pm   #6
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Default Re: Inexpensive Neodymium magnets

Time was when that was the fate of CRT focussing magnets.
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Old 5th Jul 2019, 10:23 pm   #7
Jolly 7
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Default Re: Inexpensive Neodymium magnets

Here are some of my neodymium magnets. The cylindrical one came out of an old shake and light torch and the others were purchased on eBay. These magnets are great for making many interesting projects. I have made a pulsed DC motor from these magnets using an old VCR drum head, an electromagnet and a reed switch.
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Old 6th Jul 2019, 12:26 am   #8
Silicon
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Default Re: Inexpensive Neodymium magnets

Please remember to keep them away from heart pacemakers and colour CRTs..
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Old 7th Jul 2019, 11:16 pm   #9
IanBland
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Default Re: Inexpensive Neodymium magnets

I have two hard disk drive magnets currently holding a wrist rest of my own design to my desk (a right angled piece of steel that was once part of a box, with some foam on top).
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Old 8th Jul 2019, 12:18 am   #10
Refugee
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Default Re: Inexpensive Neodymium magnets

I have just come across a couple of magnets that are ripe for harvesting.
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Old 8th Jul 2019, 8:46 am   #11
vidjoman
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Default Re: Inexpensive Neodymium magnets

I've used the magnets from a hard drive to hold doors open in our house. They are strong enough to stop the doors closing when the wind blows and tries to slam the doors shut.
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