Hi Peeps,
Just wondering do most of your teachers want the students to make their own electro magnets with insulated copper wire? Just seems such a waste to me making new coils every year what does everyone else do?
MariaQ
Making Electro magnets
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Re: Making Electro magnets
I save the used wire into a kit and re-use it every year.
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Re: Making Electro magnets
Always just given them last year's efforts. They usually get so squashed and stretched out of shape before they even get back to the prep room, they need to be rewound. Never had anyone complain.
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Re: Making Electro magnets
I reuse the wire . We use cotton covered stuff as the plastic insulated stuff tends to melt and hurt children
I prepare the ends ...IE cut back the cotton and add a dab of fingernail polish or PVC to stop it unravelling. We find a 2 meter length is ample .Any longer and the kids just tangle it all up . it will easily pickup small nails and paper clips with either a "D" cell or 2V on the power packs .
I ask the teachers to get the kids to leave them on the rods so I can carefully unroll it so it doesn't kink but there is always one that has to pull the rod out and give you a coil .
To straighten the wire , I tip my chair over and pull the wire around the stand a few times ( but any fixed round bar or pole would work ) . Comes out like new
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Re: Making Electro magnets
Thanks Bigmack for such a detailed reply! Awesome
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Re: Making Electro magnets
Your the best Bigmack Really you are.
Regards Labbie
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Lab Manager/Lab Tech, mind reading etc etc
Now retired
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Re: Making Electro magnets
Ok next question, I have a little of the cotton covered copper wire, but not enough. Does anybody know where I can purchase this? Did a quick goggle search and not much came up.....MariaQ
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Re: Making Electro magnets
Good question Maria .Gosh , I thought our regular suppliers still sold it but no .....it's a lot worse than that as you say .
You can get 500KG spools @ around $2,500 from China
or about 30 metre reels from the UK .
You can get 500KG spools @ around $2,500 from China
or about 30 metre reels from the UK .