I am wrapping a transducer coil and had a question with the winding direction. Lets say that I am wrapping the wire around a bolt in a clockwise direction. After I reach the halfway point of the wire, if I then reversed the direction I am winding to counter-clockwise, what would it do? I am unsure whether it would cancel out the previous coil, add to it, or whatever else is possible. I read several responses to other questions similar, but they were unspecific and I was unsure what about what they were saying.