The circuit schematic will be as shown in the image (or here http://basicaudio.net/Fuzz%20factory%20schem.PNG):
Another more graphical representation:
I will wire up the configuration + the smaller components on a prototyping board / perfboard which will lie within the pedal enclosure, along with a 9V battery.
For the enclosure, I would like to use a metal enclosure for durability. Since the device uses electrical sound as both input and output, the enclosure material will not affect the actual signal processing. I’m thinking about using a Hammond enclosure (https://www.mammothelectronics.com/collections/hammond-enclosures).
The dimensions of the ZVex Fuzz Factory are 4.70″ x 2.38″ x 1.82″, so I’m thinking of giving myself some leeway by getting an enclosure that is 5.71″ x 3.74″ x 1.93″ (there wasn’t really a better enclosure size given the dimensions of the commercial pedal).
I’ll also plan on decorating the enclosure to some degree. I found this link: https://www.coda-effects.com/2017/10/enclosure-art-how-to-make-good-looking.html, which goes through a few methods of decorating pedals. I will need to decide which method I think looks best while being feasible. (Obviously, some of the more impressive designs and decorations are pretty expensive or inaccessible for DIY.)
As far as how the pieces will be mounted on the enclosure, on the top, there will be five potentiometers / knobs, a push button for power, and an LED to indicate ON/OFF. There will be input and output 1/4″ jacks.
Here is a simple CAD schematic I made; knobs on the top, push button on the bottom, LED in the middle: