Heliodor Amp Overdrive Drill Template
Aion FX · 125B · 3-Knob (Type 2)
Template details
- Circuit
- Heliodor Amp Overdrive
- Vendor
- Aion FX
- Enclosure
- Hammond 125B
- Dimensions
- 64 × 119 × 35 mm
- Layout
- 3-Knob (Type 2)
Export formats
- PDF — print at 1:1 scale
- SVG — vector graphic
About this drill template
Drill template for the Aion FX Heliodor Amp Overdrive, 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. Print at 1:1 scale, tape to the enclosure face, centre-punch, and drill — PCB and parts not included.
Most overdrive PCBs are forgiving for first-time builders — the parts are common, the layout is non-critical, and the few high-impedance nodes are kept short. This drill template doesn't change that — it positions the user-facing holes and leaves the inside clear for the board, jacks, and 9V supply.