Engineer's Thumb Compressor Drill Template
Fuzz Dog · 1590B
Template details
- Circuit
- Engineer's Thumb Compressor
- Vendor
- Fuzz Dog
- Enclosure
- Hammond 1590B
- Dimensions
- 59.3 × 111.2 × 27 mm
- Layout
- 1590B 2-Knob (Type 2)
- Category
- Compressor
Export formats
- PDF: print at 1:1 scale
- SVG: vector graphic
About this drill template
Drill template for the Fuzz Dog Engineer's Thumb Compressor, sized for a Hammond 1590B enclosure (59.3 × 111.2 × 27 mm). The pre-positioned holes match the PCB's pot footprint exactly, with the footswitch centred below the 2-knob layout. Print at 1:1 scale, tape to the enclosure face, centre-punch, and drill. PCB and parts not included.
Fuzz Dog description: “Valve Wizard's excellent compressor design. Something a little different to the Dynacomp variants.”
The Valve Wizard's Engineer's Thumb, a compressor built on a very different principle to the Dynacomp family. Attack and Release can be fixed with jumpers rather than fitted as pots, which is how it drops to two knobs.
Build notes
Two-knob layouts leave plenty of space inside the enclosure: the PCB, jacks, and 9V supply all have room to breathe.
The Hammond 1590B is the standard small DIY pedal enclosure: compact enough for a crowded board, large enough for most single-effect PCBs and a 9V battery.
Vendor specs: PCB 50 x 47mm, build difficulty medium.
Drill measurements
Hole centres for the 1590B 2-Knob (Type 2) 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 |
|---|---|---|---|---|
| Pot | Enclosure face | -17.5 | 42 | 7 mm (0.28 in) |
| Pot | Enclosure face | 17.5 | 42 | 7 mm (0.28 in) |
| LED | Enclosure face | -14 | -37.6 | 5 mm (0.20 in) |
| Footswitch | Enclosure face | 0 | -37.6 | 12 mm (0.47 in) |
| DC Jack | Right side | -37.6 | 13.6 | 12 mm (0.47 in) |
| Jack | Right side | -17.6 | 13.6 | 9.5 mm (0.37 in) |
| Jack | Left side | -17.6 | 13.6 | 9.5 mm (0.37 in) |