For a long time I have been a fan of the Multi-Face Pedal and have been having fun exploring the different nuances of fuzz by swapping around parts on a breadboard. However, I wanted to make a more permanent fuzz pedal that I could use to toggle through different capacitors and transistors very quickly. I came up with this design, which involves 4 rotary switches. In this way, I am able to quickly achieve 1,296 rockin' combinations. Hence, being a fuzz pedal with lots of combination, it was thus aptly named "The Fuzz of 1000 Faces."
Step 1: Go Get Stuff
You will need:
(x1) PCB (Radioshack part #276-168)
(x1) Hacked Radioshack Illuminated Switch
(x1) 5K potentiometer
(x1) 10K potentiometer
(x1) 100K potentiometer
(x2) 100K resistor
(x1) 10K resistor
(x2) 0.01 uF capacitor
(x2) 0.047 uF capacitor
(x2) 0.1 uF capacitor
(x2) 1 uF capacitor
(x2) 4.7 uF capacitor
(x2) 10 uF capacitor
(x1) DPDT relay
(x4) 2P6P rotary switch
(x4) Gray knobs
(x3) White knobs
(x1) Hammond size-DD enclosure
(x1) Metal spray primer
(x1) Pink Spraypaint
(x1) Brushes, Testor enamel paint and thinner
(x2) Fine point paint pens
(x1) 18" x 12" cork
(x1) 18" x 12" rubber
(x1) Soldering setup
(x1) Drill press and clamps
(x1) Painter's tape
(x1) Multicolored wire
(x1) misc tools and cleaning supplies
Step 2: Prepare the Top for Drilling
If you don't have a laser cutter, download the attached file called multiFuzzPrint. Print it out and tape it down centered upon your DD-sized enclosure.
If you happen to have access to a laser cutter, download the file named MultiFuzz. Cover your enclosure in painter's tape. Etch the design upon the enclosure such that it is perfectly centered.
Step 3: Drill the Top
Clamp the enclosure into a bench vise and clamp the vise down to the bed of your drill press.
Drill the four holes for the rotary switches with a 3/8" drill bit.
Drill the 3 holes for the potentiometers with a 9/32" drill bit. Also use the 9/32" bit to drill a pilot hole for the stomp switch.
Finally, drill out the stomp switch hole to the proper diameter with a 1/2" bit.
Step 4: Drill the Sides
Again, if you don't have a laser cutter, download and print out MultiFuzzSidePrint. Cut out these templates and tape it to the sides of the enclosure such that there is an audio jack on each short side and a power switch on the long back side.
If you have a laser cutter, then download MultiFuzzSide. Etch these files onto painters tape and then vector cut around the edges. Peel up the template and stick them to the enclosure such that they are centered on each side appropriately.
Drill the audio jack holes with a 3/8" drill bit. Drill the hole for the power switch with a 1/4" drill bit.
Step 5: Rubber Bracket
For those of you with a laser cutter, simply download MultiFuzzRubberBracket and cut it out of 1/16" santoprene rubber.
The following settings with my Epilog 75W laser cutter:
If you don't have a laser cutter, you can download MultiFuzzRubberPrint and try to use it as a template to cut out the rubber. However, I highly recommend that you find a manufacturing service that will cut out the file for you.
Step 6: Prepare the Case
Prepare the case for painting by sanding and scratching the outer surface with sandpaper and a hard-wire brush.
Finally, wipe it down with a cloth covered in acetone to remove all of the unwanted coating from the enclosure.
Step 7: Prime the Case
Evenly spray the outside of the case with a primer coat to prevent rusting.
Step 8: Spray Paint
Once the primer is dry, spray the outside of the case with a number of coats of pink spray paint until it is even and pretty-like.
Step 9: Start Detailing
Draw your design onto the case very lightly with pencil.
Step 10: Enamel Painting
When you are happy with your design, paint it on using Testors enamel paint that is normally used for model cars. For fine detailing, like thin black lines, I highly recommend using paint pens.
Considering this is the Fuzz of 1,000 Faces, I thought it might be appropriate to cover it in faces.
Step 11: Prep the Circuit Board
Cut the circuit board in half as you will only need half of it. A paper cutter works well for cutting circuit boards. If you don't have a paper cutter, regular old scissors work pretty well too.
Step 12: Build the Circuit
The circuit is basically a fuzz face clone based on the Multi-Face. However, rather than have sockets to swap out transistors and capacitors, I have just wired in 6 presets for each (where the socket would have been) and made it so that I can toggle through with rotary switches.
Basically, at this point, build the circuit minus the rotary switches and the potentiometers. You can wire those in later and it will save you confusion and headaches.
The one thing that I forgot to draw into schematic was that I used a DPDT relay and a SPST lighted switch as opposed to the standard DPDT true bypass stomp switch that is normally used in guitar pedals.
Step 13: Wire the Switches
Attach wires to the rotary switches.
The switches have 2 pairs of six outer terminals and those six terminals connect to one of the two center terminals. Basically, when you turn the shaft, one of the six outer terminals make electrical contact to one of the center terminals.
That said, on two of the switches, connect 6 wires to a one of the sets of outer switches and one wire to the corresponding center switch. Install these into the two outer positions of the case as pictured (don't forget to install the rubber bracket between the switch and the case).
Then, for the two center switches, connect wires to all of the terminals. It helps if you color code it so you can tell the grouping of wires apart.
Step 14: Wire It All Together
Connect wires to the potentiometers as shown and then install them in the case.
Also connect wires to the jack and stomp switch and install those as well.
Finally, connect everything to the circuit board as appropriate (as per the schematic below).
Step 15: Cork Insulation
If you have a laser cutter, download fuzzcorkcut and cut that shape out of a piece of cork.
If you don't have a laser cutter, download fuzzcorkprint and print it out and use it as a template to cut the cork.
Place and/or glue the cork in the center of the lid. This will prevent the circuit board from shorting out on the metal casing.
Step 16: Finishing Touches
Plug in your battery. Jam everything inside and fasten the case shut.
Put some gaffers or masking tape on a pair of pliers and user that to tighten the nuts for the switches, potentiometers and audio jacks. This will prevent the case from getting scratched.
Securely fasten the knobs onto the shafts for the potentiometers and rotary switches. Label the rotary switches as appropriate with a paint pen.
Finally, I recommend placing adhesive rubber pads on the bottom to keep the bottom of the case from getting scuffed up.
Plug in and enjoy.