What stupid things I've done to make the motor

I have studied electric before when I was in middle school. I was smug that I think I can handle it without reading those 2 pages instruction in English. So I didn't wrap the 14AWG wire on the bottom of the string.

I thought the wire was used to bulb up the power of the motor. But actually it can create a magnetic field when the electricity goes through it. Because battery has +and - part that the electricity goes from + to-. And magnetic systems have N and S. When they combine, it can create a large magnetic field.

so I have to remove the neels and wrap that hard wire on them QAQ which is a really exhausted job.