Fuzz Foundry Drill Template
PedalPCB · 125B
Template details
- Circuit
- Fuzz Foundry
- Vendor
- PedalPCB
- Enclosure
- Hammond 125B
- Dimensions
- 63.6 × 119.3 × 35.8 mm
- Layout
- 125B 5-Knob (Type 1)
- Category
- Fuzz
Export formats
- PDF: print at 1:1 scale
- SVG: vector graphic
About this drill template
Drill template for the PedalPCB Fuzz Foundry, sized for a Hammond 125B enclosure (63.6 × 119.3 × 35.8 mm). The pre-positioned holes match the PCB's pot footprint exactly, with the footswitch centred below the 5-knob layout. Print at 1:1 scale, tape to the enclosure face, centre-punch, and drill. PCB and parts not included.
Fuzz circuits live and die by their clipping stage, the transistors (or diodes) push the signal into hard saturation and squared-off waveforms, which is where that characteristic wall-of-buzz comes from. Layout-wise the gain stages don't ask much of the enclosure, so the knob spacing in this template prioritises feel over board real estate.
Build notes
Five-knob layouts are dense: pots compete for space with the PCB and jack stack-up, but everything still fits inside the standard enclosure.
The Hammond 125B is one of the most common DIY pedal enclosures: a touch larger than a 1590B, slightly smaller than a 1590BB, with room for almost any single-effect PCB plus 9V supply.
Vendor specs: Designed for a 125B enclosure with top-mounted jacks
Controls
- Volume: Adjust output volume level
- Drive: Controls the amount of distortion
- Compress: Adjusts attack/tonal characteristic
- Gate: Chokes off squeals and oscillations
- Stability: Controls the firmness of fuzz
Drill measurements
Hole centres for the 125B 5-Knob (Type 1) layout. X runs left to right from the centre of the face being drilled. On the enclosure face, Y is measured from the centre, positive towards the top. For holes on a side, Y is the distance down the wall, measured from the face edge. Export the PDF for a 1:1 printable version with a scale check.
| Hole | Face | X (mm) | Y (mm) | Diameter |
|---|---|---|---|---|
| LED | Enclosure face | 0 | 38.1 | 6.4 mm (0.25 in) |
| Pot | Enclosure face | -20.3 | 38.1 | 7 mm (0.28 in) |
| Pot | Enclosure face | 20.3 | 38.1 | 7 mm (0.28 in) |
| Pot | Enclosure face | -20.3 | 12.7 | 7 mm (0.28 in) |
| Pot | Enclosure face | 0 | 12.7 | 7 mm (0.28 in) |
| Pot | Enclosure face | 20.3 | 12.7 | 7 mm (0.28 in) |
| Footswitch | Enclosure face | 0 | -45 | 12 mm (0.47 in) |
| DC Jack | Top side | 0 | 14.2 | 8 mm (0.31 in) |
| Jack | Top side | -15.2 | 24.3 | 9.5 mm (0.37 in) |
| Jack | Top side | 15.3 | 24.3 | 9.5 mm (0.37 in) |
Never drilled one before? How to drill a pedal enclosure walks you through the entire process, from punching the centres to the final step drill size.
Jig B covers 125B 5-Knob (Type 1)
Drop it over the enclosure, punch a mark through the holes this build uses, then lift it off and drill. It wraps onto the sides too, so the jacks and DC socket are covered.
See the jig pack, $12 →