Coil Winder
This is purely a woodworking project for those who are looking for a more automated way to make coils. It's not motorized, but it is fully adjustable to any coil size (my prototype does 3-24 inches) and it has a counter. Cost of construction is less than $20 if you use scrap wood and find a surplus counter. For those who are really agressive, consider an electronic counter and a motor drive, perhaps using a stepper motor programmed to stop at a certain count.
Coil Winder (PDF-279K, color)
Coil Winder (PDF-194K, b&w)