Spooky Tesla Spirit Radio

Step 2 Make a Clear Cover and Drill It

The first step is to create a clear lid so we can see the simple but effective radio components. I chose polycarbonate just because that is what I had on hand. Acrylic can be used, but it won't machine as easily. 
 
Use a circle cutting attachment on a drill press to cut out a 3.25 inch disc cover lid out of 1/8 inch Lexan polycarbonate.

Next, 1/4 inch holes are drilled in the cover lid for the two banana jacks and for the two audio jacks.

The two banana jacks will receive banana plugs with pre-mounted antennas.

Two audio jacks will also be used. One is for for audio out to the computer, and one is for an optional auxiliary input modulation from a hand gripper or other source.

Drill holes as seen in the photos, or lay out your own hole design. I drilled a total of nine holes;
Two 1/4 inch holes for antenna banana jacks,
Two 1/4 inch holes for audio jacks,
One hole for the variable capacitor shaft, and two small 1/16th inch holes for its screws
and two 1/16th inch holes to feed the diode wires to mount the diode on top of the jar lid (This is for better light-to-sound effects; as the 1N34A diode is light-sensitive)