Need help finding magnets for experiment...

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jim - 27 Jul 2008 07:00 GMT

I need some help in locating ceramic disc magnets that measure 120mm in
diameter with no hole in the center. The thickness can be as much as 13 mm
25.4mm.

The strrength is not as important as the dimensions and that it be a solid
disc (no hole in center).

I have found neo magnets that are up to 8" in diameter, but their strength
will actually make it more difficult to perform the initial experiment.

If anyone knows where I may purchase ceramic desci magnets that are at least
120mm in diameter and up to 25.4mm in thickness, with no holes in them,
please let me know.

Thank you for your help.

(I have Googled, Ask'd, Yahoo'd, etc. - all to no avail. The magnets that I
have found generally top out at 76mm in diameter. If I have missed
something in these searches, I would appreciate someone pointing it out.)

jim

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Androcles - 27 Jul 2008 08:38 GMT

|I need some help in locating ceramic disc magnets that measure 120mm in
| diameter with no hole in the center. The thickness can be as much as 13 mm
[quoted text clipped - 17 lines]
|
| jim

Without knowing what you are attempting and why dimension is
so important it's hard to help you, but have you considered either
making your own or having them made for you?
25.4 mm sounds like a silly dimension, perhaps you mean an inch.

Read what is says here:
http://www.cermag.co.uk/what_cermag_do/what_cermag_do.htm

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jim - 27 Jul 2008 09:33 GMT

Thanks for the link. While this does look like it would fill the need, the
expense would push the experiment over budget.

I am looking for pre-made ceramic magnets if possible.

25.4mm does indeed refer to 1 inch. MM was used as it its unit of
measurement is preferred over inches for most of the world.

If I cannot find a magnet of the size that I am seeking, I may need to
re-work the rest of the experiment to fit the available resources.

This is a simple experiment done by a single person. I do not have an R&D
lab or learning institution backing it - so funding is not without
limitation.

I am simply investigating magnetic properties and interactions that I have
not seen investigated elsewhere. It is as much for the sheer pleasure of
finding out an unknown as anything else.

Thanks again for your help.

jim

> |I need some help in locating ceramic disc magnets that measure 120mm in
> | diameter with no hole in the center. The thickness can be as much as 13
[quoted text clipped - 32 lines]
> Read what is says here:
> http://www.cermag.co.uk/what_cermag_do/what_cermag_do.htm

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Androcles - 27 Jul 2008 09:57 GMT

You'll find pre-made magnets in all kinds of unlikely places ..
loudspeakers,
hard drives, stepper motors... whatever it is you are doing, work with
what's
available and within your budget. Winding a coil is not expensive, make
an electromagnet.

| Thanks for the link. While this does look like it would fill the need, the
| expense would push the experiment over budget.
[quoted text clipped - 55 lines]
| > Read what is says here:
| > http://www.cermag.co.uk/what_cermag_do/what_cermag_do.htm

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OG - 27 Jul 2008 13:10 GMT

>I need some help in locating ceramic disc magnets that measure 120mm in
>diameter with no hole in the center. The thickness can be as much as 13 mm
[quoted text clipped - 11 lines]
>
> Thank you for your help.

Does it need to be ceramic? It is possible to buy 'magnetic paper' (such as
used for 'print your own fridge magnets') in A4 sizes for very little money
and if the most important thing is the diameter (and the lack of a hole),
this may be suitable for your purposes.

Reply to this Message

jim - 27 Jul 2008 22:16 GMT

>>I need some help in locating ceramic disc magnets that measure 120mm in
>>diameter with no hole in the center. The thickness can be as much as 13
[quoted text clipped - 17 lines]
> money and if the most important thing is the diameter (and the lack of a
> hole), this may be suitable for your purposes.

Thanks! I'll look into that today.

jim

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Natural Science Forum / Physics / General Physics / July 2008

Need help finding magnets for experiment...