Rare Earth Magnets, do you use them?
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From: Nevada
Originally Posted by bentwings
I got one about 4 x 6 inches and about 1 1/2 thick
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Yeah, these magnets are STRONG. I get them at work when I repair a certain piece of equipment, they are used as a frictionless bearing. Mine are 3inches in diameter, round, and have a 11/2 inch center.
They are so strong if you put them on metal you WILL NOT pull them straight off, you have to slide them off the edge. I have to put it on my oil filter after I have installed it because you cant work the filter into place without it sticking to something. I dont know how much they will lift, but it would be well over a hundred pounds.
Might be fun to tie a couple of them onto a rope and "go fishing" with them at the local fishing bridge.........
They are so strong if you put them on metal you WILL NOT pull them straight off, you have to slide them off the edge. I have to put it on my oil filter after I have installed it because you cant work the filter into place without it sticking to something. I dont know how much they will lift, but it would be well over a hundred pounds.
Might be fun to tie a couple of them onto a rope and "go fishing" with them at the local fishing bridge.........
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From: Corpus Christi, Tx.
Originally Posted by Ph4tty
If you have an old hard drive sitting around it'll have some powerfull magnets in it 
I dunno how they'd compare to these rare earth magnets =\
I dunno how they'd compare to these rare earth magnets =\Take a look at THIS... http://www.unitednuclear.com/magnets.htm
Take note of the warnings about their BIG magnets.. (broken ARMS????)
They say they have their engineers pack the really big ones because their shipping/receiving people won't touch them.. Now I guess we know why the caution tag was in the bottom of BENTWINGS magnet box
One thing about rare earth magnets, they have a really low Curie Point. That is the temperature at which the magnetism "goes away"
. If I remember correctly, above 50degC is getting close to their Curie Point range... Lube oil runs hotter than that...K.
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From: Montana
Here's a source I've used for these magnets before, cheap and fun to play with.
http://www.forcefieldmagnets.com/cat...hp?cPath=23_37
http://www.forcefieldmagnets.com/cat...hp?cPath=23_37
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From: Cummins Technical Center, IN
http://www.wondermagnet.com/
Bought a bunch from them, and they're only 30 min from me in Ft Collins, CO.
I have these things all over the place.
FWIW, "Rare Earth" and "neodymium-Iron-boron (NdFeB)" are used interchangeably, with the latter being the proper name for the actual
element(s).
jh
Bought a bunch from them, and they're only 30 min from me in Ft Collins, CO.
I have these things all over the place.
FWIW, "Rare Earth" and "neodymium-Iron-boron (NdFeB)" are used interchangeably, with the latter being the proper name for the actual
element(s).
jh
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From: St.Paul , MN
wcbcruzr,They are used to remove metal filings from powder. And that they do very well.
Originally I put tear off plastic sheets on them so you could easily get the filings off, but we found that it is easier to just take a shop towel and wipe them off over the edges. Filings don't have much mass so they don't stick as tight as solid steel.
We keep these in a big wood box untill they are ready to be installed on the machine. Fortunately the machines are all stainless steel so there is no sticking. We even have to be carefuly around the computers. I don't know what would happen to a hard drive if it got too close but it couldn't be good.
Originally I put tear off plastic sheets on them so you could easily get the filings off, but we found that it is easier to just take a shop towel and wipe them off over the edges. Filings don't have much mass so they don't stick as tight as solid steel.
We keep these in a big wood box untill they are ready to be installed on the machine. Fortunately the machines are all stainless steel so there is no sticking. We even have to be carefuly around the computers. I don't know what would happen to a hard drive if it got too close but it couldn't be good.
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From: Commerce, OK
You should be more careful with them around CRT's. They will magnetize the screen and you'll have a hard time getting the colors right after that. I have a degauser but most people don't know to use one and would trash the CRT.
I saw plans to build a wind generator with these magnets. The site said to be VERY careful not to get your fingers between 2 of them since it would smash them badly. They also have a tendency to fly off toward the nearest piece of iron or steel and will smash whatever is in between.
Edwin
I saw plans to build a wind generator with these magnets. The site said to be VERY careful not to get your fingers between 2 of them since it would smash them badly. They also have a tendency to fly off toward the nearest piece of iron or steel and will smash whatever is in between.
Edwin
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From: Austin,TX
Originally Posted by BearKiller
One place to buy Rare Earth magnets is, of all places, woodworking supply stores, such as Hartville Tool, Woodcraft, Rocklers, and the like.
www.hartvilletool.com
They are so strong that they are dangerous.
I put two large ones on my front bumper, in order to save fuel by "drafting" other trucks.
I just get close and let the magnets, and the other guy's truck, do all the work.
Also, I find all sorts of nails, screw-drivers, wrenches, etc. hanging on them.
I really doubt your gaining anything by doing that. You'd probably have to be a foot or less away from them in order for the magnets to have any pull. Then, next thing you know your stuck to the car in front of you.
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From: Montana
Originally Posted by charliez
If you've got enough shavings in your oil to need a magnet stuck to your filter, you need to quit playing with magnets and get your truck fixed.
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From: MA
Originally Posted by daysel
I really doubt your gaining anything by doing that. You'd probably have to be a foot or less away from them in order for the magnets to have any pull. Then, next thing you know your stuck to the car in front of you.
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From: Cincinnati, OH
You need to pack a couple of the larger ones into a set of sidesteps / nerf bars for your truck. Those morons who enjoy whacking their car doors into other people's vehicles would certainly be surprised 
.
Chris
.Chris
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From: Mexico!
Originally Posted by GO 4LO
You need to pack a couple of the larger ones into a set of sidesteps / nerf bars for your truck. Those morons who enjoy whacking their car doors into other people's vehicles would certainly be surprised .
Chris
.Chris
ha ha