This instructable will show you how to make a high-grade electromagnet and unlike other electromagnets, this one is neater and more efficient . It can be used on a crane or just for fun. Enjoy! The Nail. This will be the ferromagnet . It plays a key role in the electromagnet . The Wire. A magn...By: gearup500
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from Instructables: exploring - technology - robots http://ift.tt/1pnZADD
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