2. It is also related to proficiency;

3. After manually lowering the outer ring, shape the coil so that the groove to be embedded in the upper layer is basically visible and will not be blocked by the outer ring.

It is convenient to put the upper coil into the stator core, so the off-line speed will also be improved.

4. If you are just starting to learn, start with something simple (the slot is full), and then do something difficult after you have mastered the operation and skills.