its is a temporary magnet. Things you'll need: 1 iron bar2 copper wire3 battery 1.5v-2v4 electrical tape Coil the wire around iron bar. leave ends to attach to battery. Now attach it to the battery. make sure that electricity is flowing. Now try picking up nails.By: arham_abdullah
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from Instructables: exploring - technology - robots http://ift.tt/1warly1
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