I'm thinking about selling a product that has a small rare earth magnet attached to it. It's a ring magnet, 1/2" OD, 1/4" ID. How detailed of a warning label would I need to go with regarding stored data, internal medical devices, transporting on an airplane?
Rare earth magnet question?
Apr 12, 2004
14 Replies
On Sun, 11 Apr 2004 17:47:31 -0700, "Rick Maston" vaguely proposed a theory ......and in reply I say!: remove ns from my header address to reply via email
Anyone who answers this with any attempt at advice has to have rocks in their head.
"I accept no responsibility for any damage caused by my advice, however it is used, whether for its intended purpose (whatever that may be!?) or not, in any situation."
If you think you need any warning, see a lawyer, pay, and sue them when you get sued.
**************************************************** I went on a guided tour not long ago.The guide got us lost. He was a non-compass mentor.........sorry ........no I'm not.
FWIW, when I bought a few small rare earth magnets to play with diamagnetic levitation, from this place:
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They arrived via PS, in a little carton about 3"x3"x3" lined with two U-shaped pieces of bent sheet steel (about 20 gauge IIRC). The two pieces formed a cube shaped shield, sort of like clasping your two hands together.
Jeff
BTW, the levitation stuff was fun to play around with, and it really woiks!
It's makes a great desk toy:
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Remember to sue people who advise you to get lawyers, makers of every type of legal paper, makers of the magnet, makers of the warning labels, ...
The requirements for transporting magnetic items by US mail are spelled out thusly:
Magnets are included in USPS Pub 52, Hazardous, Restricted and Perishable Mail.
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See: USPS Packaging Instruction 9B (page 328)
Best regards, Spehro Pefhany
Open an old hard drive, you will find a set in them. I use them for some jigs in my shop. I must have about 30 of them. A few HDs just use one but most 2.
This is not advice, so don't sue me. But, I have never seen a magnet with any kind of warning label. This includes refrigerator magnets, retrieval magnets, welding jig magnets, worklamp bases, etc.
I suggest you take this information to your lawyer, if you like to pay lawyers' fees.
Any hard drive has them, they are shielded but they are in there.
||On Sun, 11 Apr 2004 17:47:31 -0700, the renowned "Rick Maston" || wrote: || ||>I'm thinking about selling a product that has a small rare earth magnet ||>attached to it. It's a ring magnet, 1/2" OD, 1/4" ID. How detailed of a ||>warning label would I need to go with regarding stored data, internal ||>medical devices, transporting on an airplane? || ||The requirements for transporting magnetic items by US mail are ||spelled out thusly: || ||Magnets are included in USPS Pub 52, Hazardous, Restricted and ||Perishable Mail. || ||
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|| ||See: USPS Packaging Instruction 9B (page 328) || ||Best regards, ||Spehro Pefhany ||-- ||"it's the network..." "The Journey is the reward" || snipped-for-privacy@interlog.com Info for manufacturers:
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||Embedded software/hardware/analog Info for designers:
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Rex in Fort Worth
Trust a [fellow] Canadian to point out USPS regulations :-)
Tom
On Mon, 12 Apr 2004 18:28:38 GMT, snipped-for-privacy@REMOVEtxol.net (Rex B) vaguely proposed a theory ......and in reply I say!: remove ns from my header address to reply via email
I bought four of them, about 20mm Dia abd 20mm long. I showed two to my father and said "Watch your fingers!" Sure enough...Clack! Gave him a ripper blood blister.
**************************************************** I went on a guided tour not long ago.The guide got us lost. He was a non-compass mentor.........sorry ........no I'm not.How do you like this warning....
***WARNING*** This is an EXTREMELY Powerful Magnet! The end user MUST USE SAFETY PRECAUTIONS when unpacking and using this magnet. Remove all metal objects within a 5 foot radius before unpacking. Magnets of this size and strength can pull metals objects to them when brought too close. Two magnets of this size will fly together with great force and can break bones. Wear safety glasses. Use heavy gloves."Kevin Beitz" wrote: How do you like this warning.... ***WARNING*** (clip) ^^^^^^^^^^^^ I would add: "Not to be used for lifting."
And the ever popular "not for internal use"
Wayne
Rick, a friend of mine here in Colorado invented and is currently marketing a flashlight that uses vicious rare earth annular magnets in it:
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You may find some good ideas on labeling and warning and such at their web sites for these devices. I know they've crossed every T and dotted every I in the development and successful marketing of this product (they're selling like a thousand flashlights per month nowadays), so I would expect that the labeling they've come up with (for larger magnets than what you suggest, by the way) is well-evolved in this regard-- Charley Hale Lafayette CO
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