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Re: FABRICATING MAGNETS


From: 	Sulaiman Abdullah[SMTP:sulabd-at-hotmail-dot-com]
Sent: 	Wednesday, November 05, 1997 10:35 AM
To: 	tesla-at-pupman-dot-com
Subject: 	Re: FABRICATING MAGNETS

Hi,  I've been experimenting with ferrite and AlNiCo magnets these past 
few weeks, and I wanted to get my hands on some NdFeB (NIB) magnets but 
thought the cost too high.....luckily I've found a fabulous source of 
NIB 's , all modern Hard Disk drives use them in the head-arm actuator. 
They can be easily removed by bending the metal plates that they're 
atatched to which breaks the glue, then slide them off. If you've access 
to old HDD's then you can get as many as required, then just use iron to 
make the magnetic circuit of any required shape.
bye .... Sulaiman 


>To: "'Tesla List'" <tesla-at-poodle.pupman-dot-com>
>Subject: FABRICATING MAGNETS
>Date: Tue, 4 Nov 1997 07:56:34 -0600
>From: Tesla List <tesla-at-pupman-dot-com>
>
>
>From: 	Alan G. Pope[SMTP:agpope-at-phonetech-dot-com]
>Sent: 	Tuesday, November 04, 1997 10:39 AM
>To: 	tesla-at-pupman-dot-com
>Subject: 	FABRICATING MAGNETS
>
>Hello TC'ers,
>
>In connection with Tesla work I'm interested in making custom-shaped, 
and
>sized magnets. 
>
>If it is possible, and practical within reason, I would like to buy
>rare-earth in powder form, and, in some manner, bond, mold, compress,
>shape, machine, or otherwise fabricate magnets to exact custom shapes,
>strengths, and sizes. 
>
>EXACT magnet geometry is very critical for many experimental projects, 
and
>the cost of factory-made custom magnets can be prohibitive, especially 
on
>an experimental project where many sizes and shapes may have to be 
tried
>and rejected before finding the ones that work.
>
>I have already located some plans for building magnetizers, but would 
also
>appreciate more input on that, as well as how to achieve maximum
>magnetization without destroying the magnet. I believe that rare-earth
>magnets require a more powerful magnetizer than many of the 
less-powerful
>magnet types.
>
>I would appreciate any detailed info I can get on this, as well as 
parts
>and material source references.
>
>Thanks,
>
>Alan G. Pope   
>
>
>
>