Halo Distortion / Sustainer Drill Template
Aion FX · 125B · 3-Knob 1-Toggle (Type 1)
Template details
- Circuit
- Halo Distortion / Sustainer
- Vendor
- Aion FX
- Enclosure
- Hammond 125B
- Dimensions
- 64 × 119 × 35 mm
- Layout
- 3-Knob 1-Toggle (Type 1)
Export formats
- PDF — print at 1:1 scale
- SVG — vector graphic
About this drill template
Drill template for the Aion FX Halo Distortion / Sustainer, sized for a Hammond 125B enclosure (64 × 119 × 35 mm). The pre-positioned holes match the PCB's pot footprint exactly, with the footswitch centred below the 3-knob layout, with 1 toggle. Print at 1:1 scale, tape to the enclosure face, centre-punch, and drill — PCB and parts not included.
Compressor layouts are slightly more involved than gain pedals — the gain-reduction element (OTA or LDR) needs to be biased correctly, and some designs use internal trims for ratio or attack. The drill template handles the user-facing holes; the internal trims stay accessible after final assembly.