DIY electromagnet

spielbassOctober 16, 2007

I'm trying to reproduce an electrical toy from my youth that my dad built. It's a spinning motor and one component was an electromagnet made of a thread spool wrapped with wire and connected to a 12v lantern battery. For the life of me, I can't seem to make a magnet that's strong enough. It has to be strong enough to attract a piece of metal from an inch and a half or so away. So, was this just a spool of wire or must there have been a bolt through the middle and how can I make it strong enough? Thanks for any hints.

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Maybe grab your computer and search for
electromagnet science projects

    Bookmark   October 17, 2007 at 4:40PM
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Here's a simple electric motor...
I remember making one on a mouse trap.

Here is a link that might be useful:

    Bookmark   October 17, 2007 at 4:45PM
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