Cheap Magnet source...CTXT

[Eric Adams]

Just thought of a cheap source of HIGH-STRENGTH magnets. Old hard drives. I have 4-6 sets myself. Be warned, they are so strong that it is hard to remove one from another. Apps could be anywhere you need a real tight closure (REAL TIGHT)!

All you need is a old HD, a set of torx (or a drill press) and 10-15min of work. The magnets are the shiny curved metal pieces at the bottom of the reading "arm". There is a top one and a bottom one.

[Guest]

Eric,
Check out this link that Guy showed me;
http://www.kjmagnetics.com/

[Eric Adams]

Eric,
Check out this link that Guy showed me;
http://www.kjmagnetics.com/

Cool, nice selection. But they do cost...

[JunkMan]

I pulled a hard drive apart, and found the magnets, but they are attached to a steel frame. How do you remove them from the steel?

The polished discs make great emergency signal mirrors for hikers, hunters, and such too!

[ego martini]

k and j magnets has some great prices on these magnets. I heard a painful story about the possible handling dangers of rare earth magnets from a guy in a science store that sold these items. I guess a male teacher bought a couple large magnets to demonstrate their power to his students - without thinking he placed magnets in the left and right front pockets of his slacks - this is as far as store clerk got in the story before I doubled over in empathy pain!

[asianflava]

We have some equipment at work which require magnetron replacement every couple of months. When we replace them the magnetrons are usually trashed. Sometimes we take them apart to retrieve the magnets. You have to hold them up near chest level or the credit cards in your wallet will be erased.

[Eric Adams]

I pulled a hard drive apart, and found the magnets, but they are attached to a steel frame. How do you remove them from the steel?

The polished discs make great emergency signal mirrors for hikers, hunters, and such too!

Usually the lower is screwed or glued (like our TDs) to the frame. Use a flathead screwdriver (could be screwed from the reverse side, I have seen that) the upper is usually held be screws.

[JunkMan]

[quote="Eric Adams]Usually the lower is screwed or glued (like our TDs) to the frame. Use a flathead screwdriver (could be screwed from the reverse side, I have seen that) the upper is usually held be screws.[/quote]

They look like they are glued, I don't see any screws. Can you just knock them off with a hammer and chisel?

[Eric Adams]

[quote="Eric Adams]Usually the lower is screwed or glued (like our TDs) to the frame. Use a flathead screwdriver (could be screwed from the reverse side, I have seen that) the upper is usually held be screws.

They look like they are glued, I don't see any screws. Can you just knock them off with a hammer and chisel?[/quote]

Yep...try that...

[Nitetimes]

They look like they are glued, I don't see any screws. Can you just knock them off with a hammer and chisel?

Yep...try that...

That's how I get them off. Those little magnets are great, super strong and nice and thin.