Scatter winding is also called hand winding where the magnet wire is guided back and forth onto the coil by hand. This process is still used today especially for rewinding vintage guitar and bass pickups. Scatter winding is usually done on single coil pickups and is normally not done on plastic humbucking bobbins. Humbucking bobbins need a precise number of turns per layer and proper pitch so the bobbins don’t flair at the ends when being wound.