Split large magnet into smaller pieces

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fixit7

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I salvaged this 10 lb magnet from a 1000 watt speaker.

I trying to make smaller magnets from it.

Wikihow says to either chip it with a hammer or saw it with a hacksaw.

What do you think?


 

slownsteady

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I suppose it depends on what you're going to do with it. If you break it into chunks it will have rough surfaces, which you may find less useful or unattractive.

I think you should leave it whole and put it on the fridge to hold up a calandar :cool::rolleyes::eyeballs:
 

fixit7

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I suppose it depends on what you're going to do with it. If you break it into chunks it will have rough surfaces, which you may find less useful or unattractive.

I think you should leave it whole and put it on the fridge to hold up a calandar :cool::rolleyes::eyeballs:
It does not bother me if the chunks are not attractive.

Putting a 10 lb. magnet on my fridge is not attractive.
 

JoeD

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If you don't care about size and shape of the pieces smash it with a hammer. Otherwise use a hack saw or grinder to cut it apart.
 

Jeff Handy

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Cool!

That is an easy way to get “hammered”.

You should put that in your luggage when going through airport security.
That will make for an interesting day.
 

Jeff Handy

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Years ago, I was visiting my youngest sister, and discovered that her five year old son was obsessed with taking things apart to study them, just like I was at his age.

He had an old hard drive and was trying to get into it.
I showed him how to bash it apart, and that the coolest things inside were the EXTREMELY strong magnets.

He took them over to a nearby lally column to stick them on, and they instantly and painfully snapped down onto his little fingers.

I rescued his pinched fingertips, and I taught him a life lesson.
“Not everything that adults tell you can be trusted, or ignored”.
 

fixit7

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That was my intention as well.

Don't worry, be happy. (and flexible)

:)
 

zannej

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I have no suggestions. I've never tried to break up a large magnet. Sorry.
 

havasu

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I will add that a rare earth magnet is 1/10th the size and picks up twice the weight.
 

tomtheelder2020

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Bashing it apart will be an interesting experiment. Cut a bar magnet in half and you have two identical smaller bar magnets, but what will the polarity be for chunks from a ring magnet? Will a big piece be a curved bar magnet with polarity at the ends, or front to back? If you slice a narrow wedge, how would the polarity work? I think this is a question for someone who knows a lot more physics than me.
 

zannej

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I would think that putting on safety glasses & cutting it w/ a metal cutting attachment or scoring it & trying to snap it like glass against a flat surface might work better-- but I don't know what the thickness/size/shape of this magnet is. Smashing it seems like it's begging for debris flying everywhere.
 

fixit7

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You can break a magnet into smaller pieces by scribing the break lines onto the magnet surface with a single point diamond scribe and then flipping the magnet over and striking the backside of the magnet surface with a hammer and chisel, where the chisel edge is aligned with the direction of the scribe line on the opposite side.


But the best way to accurately separate a magnet into smaller pieces is with a diamond-wheel grinder.

 

zannej

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Ok, NOW the image showed up for me. LOL. Internet was being stupid & wouldn't show it earlier. That's a large magnet. Sounds like cutting w/ diamond wheel grinder is the way to go. Remember to wear safety glasses though.

What sizes do you want the smaller ones to be?
 

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