How to make screws power an LED light.
Step 1:
First I drilled holes to ensure that all 3 of the screws would meet in the middle of the piece of wood. I made sure that the 2 screws located on the side were not touching in the middle to ensure that the top screw would be vital to complete the circuit. I also drilled a hole for a small LED at the bottom of the wooden block for the screws to turn on and off.
Step 2: Next I installed the screws into the Pre-drilled holes. Luckily they all met in the middle as planned. I also double checked to make sure they were conductive after installing them using a multimeter. I also prepared an LED light by soldering wire (Blue and White) onto the positive and negative terminals of the light.
Step 3: Once I knew the switch would properly conduct electricity I began to build the circuit. I started by attaching a resistor to the end of the blue wire to limit the current the light would get to ensure it would not burn out. I then wrapped the blue wire with the resistor around the left screw. In order to make sure the connection was strong I dripped solder onto the wire and the screw. 
Step 4: Then I connected the battery to the other screw to complete the circuit giving it power. I did this by connecting another wire (Red) to the right screw and attaching that to a 9V battery. The circuit was completed by attaching the white wire, that was soldered to the LED, to the positive terminal of the battery.
Step 5: Finally I tested the switch by turning the top screw until it made connection with the horizontal screws. The light powered on and off after turning the screw a quarter turn. Since I had decided that the wires were going to hang off of the screws on the exterior of the wood I wanted to keep that aesthetic consistent for the switch. I left all of the necessary components for the circuit exposed on the exterior of the piece to complete the raw and unfinished look.
