rare earth magnets

I've had the same luck. Some seemed to have chipped with only rare use or contact.

I've had the same luck. Some seemed to have chipped with only rare use or contact. ==================================================================== It would seem that the chrome doesn't stick to well to the magnets. I have seen the same thing. It appears that they plate the magnets directly. Usually, a part is copper plated first before chroming. Copper seems to stick well to most things but chrome does not. Chrome does stick to copper very well though. It's likely just a cost cutting measure.

There are better built rare earth magnets that will not chip and IIRC they do not have a thin chrome coating.

Apparently an indestructible plastic coating protects these magnets.

Thanks, Have you used the rubber units? I hadn't seen them before. For some items that makes sense. For others not sure. I think I like the chrome look.

But for sh> >> Almost all of the rare earth magnets I have had eventually lose there

muchly for that link there, Leon!

muchly for that link there, Leon! =============================================================== Check out their largest one. 4" diameter x 2" thick. Over 1000 pounds pull. I don't think I'd feel safe with that one.

Yes, no, maybe, absolutely, and I don't have a clue.

Magnets have a lifetime, and can be affected by lots of things. Temperature, percussion, strong magnetic fields, lots of things.

I just buy them in bulk, and if they are acting up, I order another 100. I'm sorry, I have not kept track of suppliers and performance, but they're so cheap, I don't mess with the details.

I have bought some through magnetsource.com, as well as others. All in all, I'm satisfied with their performance when their previous generation is considered.

Steve

That baby could probably erase your credit cards from across the room!!!!!!!!!!!

They do have a load if info and a wide variety, some of those magnets look lake fleas.

I recon if the magnet is attached to a fixed object it would effectively weigh 1000 lbs. Probably would not be a hazard. BUT Imagine the UPS guy trying to get it out of his truck!

That baby could probably erase your credit cards from across the room!!!!!!!!!!! ============================================================== If you got it stuck to something, I have no idea how you would get off.

Note that the "Smaller" ones (i.e. 3/4" X 1/8") from Woodcraft or Lee Valley are only sold in stacks of 5 or 10, because it takes too much labor to break them down into small er stacks.

-Zz

Zz, How do they get the plating in between the magnets in a stack of 5 or 10? Thanks, Kerry

Good thing auto bumper are plastic these days ...

Yeah and most likely most of the UPS cab is aluminum. But think of all the crap in the other packages that would be stuck to the magnet.

You're right. I can envision even a minor fender bender causing a car and the UPS truck to get stuck together because he was delivering high powered magnets.

Hey ... with the obvious advancing state of magnetism, it could happen! ;)

On Mon, 26 Mar 2012 07:29:32 -0500, Leon

I'm wondering if they'd use some type of "canceling" magnet just for shipping purposes ~ Something similar to the Lee Valley canceling magnets.