How to Prototype Without Using Printed Circuit Boards

Step 6 Make loops around the wire ends

Using the end of a pair of tweezers, make loops over the bare ends of the wire and fit them over the pins or component wires. If you have other wires already soldered in place, you may find it helpful to feed the wires underneath the existing wires; this method will help you hold the new wires in place before you solder them.