Start by tightly twisting two 20-gauge round wire pieces together.
It is easiest to fold a 48" or longer piece of wire in half. The looped end can easily be secured in a drill or wire twisting tool.
If parallel jaw pliers to hold the two cut ends of the wire are not available, fuse or solder the ends together to make them easier to hold.
Secure the looped end in the drill. Grasp the other end of the wires with pliers. Turn the drill on and twist until the desired tightness of the coil is achieved.
Pro Tip: If the wire coil is twisted too loosely or too tightly, the coil lines will not be very visible. Depending on the tightness of the twist, the twisted wire length will be between 16 and 14 gauge in size.