2. Measure the length of the motor slot and the span of the coil to determine the size of the coil.
3. Make a winding die according to the measured size and wind the coil.
4. First, pad the trunking with insulating paper. When laying wires, try not to let them cross in the groove. If there is a small amount of intersection, it should be manually moved to the end position. After the coil is embedded, press the insulating paper higher than the slot into the slot and wrap the coil. After each coil is embedded, shape the coil and beat it with a suitable wooden stick to avoid scratching the rotor.
5. Insulating paper should also be used to separate coils.