We’ve seen many fingerboard extension designs over the years and we’ve borrowed from design features that work and avoided ones that we feel really don’t. Our extensions are built from a single piece of West African ebony fitted closely to the scroll. Anywhere the extension and scroll mate we go for perfect contact. Our most current design involves attaching the extension solidly at the nut to a hidden projection of the brass E stop plate, while the other end fits freely without screws, yet precisely into the top contours of the scroll. This type of design is strong enough to resist deformation, light in weight and easily removable if needed. The removable brass hardware for the stops is made here in house and is adjustable for intonation. We typically use ebony for the capo stops but other material is available. (snakewood, rosewood, Delrin etc.)
$1400 with E stop and your choice of string. Add $200 per additional stop.