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For this step in my multi-part instructable, I will be modifying the chassis to fit the input jacks, and the lining the interior of the chassis with copper. I purchased the foil from Stewart MacDonald. (www.stewmac.com) I purchased the 3pack of tape sizes which made this project much easier.
I decided to put copper foil on the inside of my amp chassis for two reasons. First, to reduce the amount of RF that could creep into the signal. Second, to ground the potentiometers and jacks that are located on the front of the amp. Without this foil, I would have to run a ground wire to each and it would not have looked nearly as cool.
Step 1: Remove all of the Guts
I took everything down to the wood. I wanted the interior to look neat, so I made sure to remove everything that will sit on top of the foil.
This picture is with everything still in the amp.
It was at this point when I realized that I had not left enough room for the input jacks, and that they were contacting the metal chassis. I decided that the best way to move forward was to notch the metal. This will leave a neat clean appearance on the front of the amp. Not exactly perfect, but hey... It's hand made!