I am guessing that it is a ceramic magnet. I got it out of an old electric motor.
My cub scouts are doing a science project and I need to cut this large magnet up into 1" x 2" pieces. Like I said I tried a hacksaw, I did not notice any cutting on the magnet. When I used a dremmel with a grinding and cutting wheel it made a very shallow cut into the magnet but I used a whole wheel to get that far.
I am getting frustrated and I figured that someone here would have an idea, other that trying a hammer like my son says to do.
No stopper, no punch line.
I am guessing that it is a ceramic magnet. I got it out of an old electric motor.
My cub scouts are doing a science project and I need to cut this large magnet up into 1" x 2" pieces. Like I said I tried a hacksaw, I did not notice any cutting on the magnet. When I used a dremmel with a grinding and cutting wheel it made a very shallow cut into the magnet but I used a whole wheel to get that far.
I am getting frustrated and I figured that someone here would have an idea, other that trying a hammer like my son says to do.
I'd forget the cutting and head for my friendly neighborhood big-box hardware store...
If you have a Harbor Freight or any other large hardware store, try to find a diamond abrasive wheel for a dremel. Harbor freight sells them pretty cheap. www.harborfreight.com They usually have them in a kit with a mini-dremel type tool for around $8.00. They also have them seperately but they are near impossible to find on the website. Grizzly Tool also has them under part number H1422 for about $12. www.grizzly.com
its magnetite, a close kin to kryptonite(just kidding) the only way to cut it is with an abrasive like brg mentioned, it will remain a magnet , although the polararity will not be the same, possibly quadrapole depending on the angularity of the cut
If it is ceramic...Ya got to treat it like Tile or Rock, I think a shear might shatter it. My dads hobby was lapidary work,and a diamond wheel will cut the hardest of stone. You could try a dry 14" abrasive cutoff saw if you have one!
It wont make as thin of a cut as a Rock or tile saw.
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Take a piece of soft iron rod the diameter you want and cut it in proper lengths for your project. Then using a D.C. power source, wind a single electrical copper wire around those pieces, one at at time, and activate the D.C. source. This will polorize the pieces.:right:
You can do this with your screwdriver tips, too.:right:
try buying them for cheep at desired sizes from kj magnetics
From home there is no easy wat to cut ceramic magnets, They can be cut using a watter jet cutter but, and you may have some success using a dimond cuter, they do sell them for dremmels
but I would really just buy them from kj magnetics web sight.
You do have to be careful cutting magnets. If you upset the polarity of the fields it may open a rift in the Van Allen belt that could create a worm hole to another dimension. Thus upsetting the space time continuime. Or just do what they said above.
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what happens when a magnet is cut in two? Does the strength of an electromagnet depend on the number of turns of wire? If you have two magnets how can you find out which one is stronger?
A couple of different things can happen when you cut a magnet in half.If you do it gently you can end up with two magnets. You can think of a magnet as a bundle of tiny magnets, called magnetic domains, that are jammed together. Each one reinforces the magnetic fields of the others. Each one has a tiny north and south pole. If you cut one in half, the newly cut faces will become the new north or south poles of the smaller pieces. You could keep slicing smaller and smaller slices like a loaf of bread and keep getting thinner magnets, each with a new set of poles. Remember, I did say though you only get two magnets if you cut them gently. The magnetic domains in a magnetic material can be knocked loose, by bumping or vibrating the magnet (like when sawing it in half). If knocked loose, the domains are no longer arranged neatly, so they do not reinforce each other. If they are in a random orientation, with their fields pointing all over the place, they cancel each other ou
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Craig
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Magnets and cutting 
