The custom switches designed for the Heirloom require individual actuator fitting to each Heirloom rear panel. Since the brass actuators are used to slightly preload the switch domes, the minor thickness variation part to part in the composite material is enough to effect the action.
So the depth of the switch base within the mounting hole is measured with a depth gauge (seen at the top of this post) and then the corresponding actuator is trimmed to proper length to fit in this location. A small diameter pin is turned across the bottom face of the actuator in order to create the proper action in the switch dome.
Snaptron provided the dome switches for the Novena heirloom. They are relatively easy to implement and provide a satisfying tactile and audible feedback. This is in contrast to the touch switches I originally considered for this application. The final result confirms the change in direction was the the right way to go.
Signatures for the Novena Heirloom edition require laser etching followed by a painted fill. Each of the hinge plates receive the etch which is cut through a low-tack, PSA masking material.
This provides a means for subsequently filling the etch with a painted fill. A custom color closely matches the hinge and hinge plate screw finish.
The completed signature etches. The empty screw holes will accept the brass LCD panel mount screws which have been chemically colored to the same dark bronze color.