Helrig Box casing

3D-printable case for the Helrig Box: a Waveshare ESP32-P4-NANO that plugs into a Line 6 Helix/HX pedal over USB and relays it over Wi-Fi.

The finished Helrig Box: a small black 3D-printed case with the four-colour Helrig symbol on top and HELRIG in white on the side

The case is a lid and a bottom. The lid has a closed top with one window for the Ethernet jack, and openings in the front wall for the USB ports. It carries the Helrig branding: the symbol is debossed 0.6 mm into the top, and the wordmark is debossed 0.6 mm into the left and right walls. The bottom is the original, unchanged part.

Uses M2×7 screws.

There are two variants. They are the same shape; they differ in how the branding is coloured.

	Single colour	Multi colour
Printer	any FDM printer (made for Bambu Lab A1 mini)	multi-material printer (made for Bambu Lab A1 with AMS lite)
Branding	recessed, painted by hand	recessed, filled by printed inlays in brand colours
Files	2 STLs: lid and bottom	7 STLs: lid, bottom and 5 inlays
Lid orientation	top face up, with supports	top face down on the bed, no supports
Effort	one filament, a pen and a few minutes	prime tower, longer print, more waste
Tested	not printed yet	printed on a single-colour printer (Bambu Lab A1 mini), inlays glued in; not tried multi-material yet

Not sure which? Use the single-colour variant. It works on any printer, and the recess holds the paint.

Previews

Single colour (white lid, black bottom)	Multi colour (dark lid, brand-colour inlays)

The bottom is the same in both:

Bottom

Structure

casing/
├── README.md              this file
├── ATTRIBUTION.md         credit, licence and list of changes
├── single-colour/
│   ├── README.md
│   ├── stl/               helrig-box_lid.stl, helrig-box_bottom.stl
│   └── previews/
└── multi-colour/
    ├── README.md
    ├── stl/               helrig-box_lid.stl, helrig-box_bottom.stl, helrig-box_inlay-*.stl
    └── previews/

Hardware

M2×7 screws.

Dimensions

Lid: 55 × 55 × 14.2 mm. Bottom: 55 × 55 × 5.6 mm.
Recess depth 0.6 mm, in a 2.0 mm lid plate and 2.0 mm side walls, so 1.4 mm of material stays under the branding.
Wordmark: 32 × 6.6 mm on each side wall. Symbol: 18 × 18 mm on the top.
Thinnest recess features: wordmark strokes 1.24 mm, symbol gaps 1.05 mm, letter gaps about 0.8 mm.

Licence and attribution

The case is based on the Waveshare ESP32-P4-NANO case and board model by MartinFaustMayer (@MartinFaustMa_212591) on Printables, licensed under CC BY 4.0. This adaptation is shared under the same licence. See ATTRIBUTION.md for the credit and the list of changes, and keep it with the STL files if you share them.