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Old 17th April 2007, 01:46 PM   #1
Spunjer
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will these magnets leave marks on the blade? how would one prevent that?
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Old 17th April 2007, 01:58 PM   #2
Bill M
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Quote:
Originally Posted by Spunjer
will these magnets leave marks on the blade? how would one prevent that?
I don't think that the magnets will leave marks on the blades. However I have a piece of thin wood between the blade and the magnet. The problem is that the magnets are very powerful, very slick surface and difficult to attach to the wall or backdrop.

I am going to try some epoxy to hold the magnets to a board and then just use a thick cloth to go between them and the blades. The thickness of the wood weakens the magnetic attraction and am concerned they might not hold well enough.

While the magnets are powerful, the distance between is a large factor.

I stress again that these magnets are very powerful and dangerous -- particularly to each other -- less so to steel or iron. Two magnets will bite you! I have blood blisters to prove it! They are also brittle.
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Old 17th April 2007, 04:40 PM   #3
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In the interest of recycling (and being a cheapskate ) I'd like to mention that the electric toothbrush heads that we routinely discard every month or so have incredibly strong magnets inside of them.
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Old 17th April 2007, 06:11 PM   #4
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Originally Posted by Rick
In the interest of recycling (and being a cheapskate ) I'd like to mention that the electric toothbrush heads that we routinely discard every month or so have incredibly strong magnets inside of them.
Old hard drives also have rare earth magnets in them. The magnets also have the advantage of being built into their mounting brackets so they can be screwed into whatever you want to hold them. I use a hard drive magnet to clean up iron filings.
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Old 17th April 2007, 07:17 PM   #5
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these rare earth magnets, neodymium, do they lose their magnetic hold over time? my concern is, if one uses these magnets as some sort of sword hanger on the wall and nothing else (no hooks to support), that eventually gravity takes over and well, i'll have my own version of king arthur's sword on the floor...
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Old 17th April 2007, 09:35 PM   #6
Luc LEFEBVRE
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Hi Josh,
At the beginning, I used HDD magnets, they are strong enough, but fragile.
So I buy strong and thick magnets and they don't lose their magnetic power.
Luc
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Old 18th April 2007, 01:27 AM   #7
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Hey Luc,

Neat idea, and a great way to magnetize a blade. Didn't we have a thread on that not very long ago?

Here's the Wikipedia article on neodymium magnets on neodymium magnets (just found googling, not saying it's correct).

Neodymium magnets lose strength when exposed to temperatures greater than 80 degrees Celsius, rather than over time. They are also fairly fragile. While they are wonderful fun to play with, but they can be a nuisance and/or a health hazard. For instance, you definitely DO NOT want to get your hand caught between two magnets that can each hold 100 kg, as they will come together with 200 kg worth of force and crush your hand between them. Nor do you want it to mess up your pacemaker, if you have one. Or your credit cards or hard drives.

Otherwise, have fun! if you've got a decent stand, I think a neodymium magnet would be a great way to hold a sword.

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