From CAD to Reality: Assembling the New Sailboat Dashboard
The previous Post covered the design side of this new custom sailboat dashboard configuration: measuring the old Volvo Penta panel, modeling it in CAD, and choosing a dual-layer acrylic for the new build. With the design finished, the next stage for this DIY sailboat project was assembly — turning a laser-cut panel into a fully wired, illuminated dashboard ready for the helm. This post documents that build, step by step.
The panel was ordered exactly as designed in the CAD file, then laser-cut from a two-layer acrylic material: black on top, transparent underneath. Mounting holes and cutouts were laser-cut all the way through. Wherever a label needed to glow, only the black top layer was removed, leaving the clear base layer exposed for backlighting.
Backlighting the Switch Labels
Dashboard Backlight BracketsBacklighting was tackled first, since it sits directly behind the lettering. COB (Chip-on-Board) RGB LED strips were chosen for this job. Compared to standard SMD strips, COB strips place LED chips much closer together, producing an even, dot-free glow rather than individual bright points — useful directly behind fine laser-cut text.
A holding bracket for the LED strips was 3D-printed in PETG-HF. The strips were glued into this bracket and fitted with solder pins, so wiring could be attached later. The whole assembly was then cast in epoxy resin, forming a solid backlight panel that could be bonded to the rear of the dashboard using a double-sided specialty adhesive tape, positioned directly behind the lettering. RGB strips were used specifically so the panel could switch between red and white light later, rather than being limited to a single fixed color.
Bonding Bambulab PETG-HF took some care. The material has low surface energy and poor adhesive properties by default, so its surface was primed before taping. A long, steady clamping period followed — several days of continuous pressure — before the bond was fully set. Only then could wiring be soldered onto the backlight panel.
Mounting Switches and the 12V Socket
Switches were aligned and pushed through their cutouts, then secured from behind with mounting nuts. A small drop of hot glue was added to each nut afterward, so the switches could no longer turn loose.
The 12V accessory socket — also known as a cigarette lighter socket — was installed the same way, using a 3D-printed mounting bracket glued to the rear of the panel.
With switches and the 12V socket in place, a first functional test followed. Both the red and white backlight modes were checked, and the result already matched expectations well at this stage. Running this test early, before the dimmer and remaining wiring were added, made it much easier to catch any wiring or brightness issues while the backlight panel was still fully accessible.
A USB socket was installed next, supporting both USB-C and USB-A so several phones can charge at once. Like the other components, it was fixed from behind with a drop of hot glue to stop it from twisting.
The “Build for Fairways Marine by Northshore Yacht Yards” lettering on the panel was left without backlighting for now, since it sat too close to the edge for this first version. Because the acrylic’s base layer is transparent, a thin white foil was bonded to the rear of the panel. Adding illumination there later remains possible, since nothing about the design rules it out.
Dimming the entire dashboard was part of the plan from the start, to reduce glare during night navigation. The dimmer circuit itself is covered in full detail in a separate post: Link Once that dimmer module was finished, it was mounted to the rear of the panel with the same specialty tape used for the backlight panel.
Wiring the Components
With the dimmer in place, wiring of the first components began:
- Individual backlight strips bundled together using Wago connectors
- Switch components wired in, ready to control the dashboard’s functions
- Dimmer wiring connected into the backlight circuit
- USB charging module wired into the 12V system
Using Wago 221 connectors to bundle the backlight strips kept this stage of the build reversible. Any single strip can be disconnected and swapped later without desoldering the whole harness.
Transplanting the Engine Instruments
The tachometer, temperature gauge, and hour meter were carried over from the old dashboard into the new one. Small 3D-printed protective shims were fitted behind each gauge, cushioning the sharp mounting pins of the VDO instruments so they could not scratch through the black coating from the back — which would otherwise let light through where it shouldn’t.
The instruments were also meant to glow both white and red, and to dim along with the rest of the dashboard. The original bulbs were removed and replaced with RGB LEDs, cast into a custom 3D-printed holder with epoxy resin. A first attempt did not reach the desired brightness, so stronger SMD LEDs were used instead. The second attempt worked well, and the instruments now dim smoothly in both red and white.
The oil pressure and charge/generator warning lights were left untouched. Both only light up briefly at ignition or when there is a fault, so converting them was not seen as necessary. Focusing the LED conversion only on the instruments that are read continuously kept the wiring simpler and avoided unnecessary work on parts that already function correctly.
The tachometer and temperature gauge housings were visibly worn from years of sun exposure, so they were refinished separately: bead-blasted, sanded, primed, and then repainted with an airbrush in the original black tone to match the rest of the dashboard.
Final Touches to the New Custom Sailboat Dashboard
A thin foam layer was applied to the back of the frame as a last step. This closes off any remaining light gaps around the backlight strips, even though the strips already sealed fairly well on their own, and gives the glow a slightly softer edge.
Building this new custom sailboat dashboard, from panel to fully wired helm display, took considerably more time and effort than expected. The result has been worth it: a dashboard that gets looked at daily, blends classic Fisher 30 styling with modern marine electronics, and holds up to real-world use underway.
