Option A: A neck mandrel is wonderful for shaping neckwires. For either neckwire, place the neckwire on the mandrel. Hold the front of the neckwire in place on the mandrel. Masking tape or painters tape is helpful, but the wire still needs to be held in place by hand. Hammer texture the wire on the neck sides and back.
But what if a neck mandrel is not available. The back half of the neckwire does not have to be textured and can be finished as is. But, if texture is desired, there are two options.
Option B: Hammer texture the rest of the neckwire. It will be difficult, but two soft jaw pliers can be used to curve the shape. One holds the wire steady while the other twists to get the textured side of the wire in the right place.
Option C: Know where on the curve of the wire the texture needs to be. It can be helpful to mark that area with a Sharpie marker. Place the marked side up on the base of a bracelet mandrel and texture.
Shaping Option B and C: Just above the knee is generally the same shape as your shoulders. This is the perfect place to obtain the bend for the side of the neck-left knee for the left side, right knee for the right side.