Mechanical engineers great ...
To build this train, you will need:
*Copper Wire. We used 18 gauge, and it was perfect.
*A battery – we used AAA
*Neodymium magnets. Regular magnets are not strong enough. We purchased our neodymium magnets for our magnetic slime project. If you end up ordering some, you should definitely do that project too!
In this project, the neodymium magnets on the ends of the battery create a bar magnet with a north pole and a south pole. When you put the train inside the coils, it causes an electrical current to flow through the copper wire, which creates a magnetic field in the section of wire coils right around the train car.
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