The walnut California is famous for. Marbled figure born at the graft lines of century-old orchard trees, color that runs from pale gold through auburn to near-black, and slabs wide enough to carry a table in a single board. The wood of the Arc.
Claro walnut is Juglans hindsii, the Northern California black walnut, native to the Sacramento and San Joaquin valleys. Among domestic hardwoods it has no rival for drama. When California growers planted their walnut orchards around the turn of the last century, they grafted English walnut onto claro rootstock, and the trees that came down decades later carry that history in their grain. We source ours from the Sacramento Valley, in the heart of the species' native range.
The heartwood ranges from pale warm brown to deep chocolate, shot through with casts of gray, red, and purple that no other domestic walnut shows so freely. Wood cut near the graft line of an old orchard tree carries the marbled figure claro is famous for: browns, golds, and near-blacks folded together, unrepeatable from one board to the next. The sapwood is nearly white, and against the heartwood the contrast is sharp.
Straight grain exists in claro, but it is not why anyone chooses it. The prized boards move: curl, crotch, and burl figure appear more often here than in any of claro's relatives, and in old trees the grain runs dense and layered. At 1,130 on the Janka scale it is slightly harder than eastern black walnut, with the same honest workability, and it polishes to a satin depth under oil.
These are big trees, three to five feet through the trunk, which is why claro is the great single-slab wood of American furniture making. One board can carry the full width of a dining table with no seams and no interruptions. The Arc, our single slab dining table, is built around exactly that: a slab of claro walnut cut from a tree that grew for approximately 125 years in California's Sacramento River Valley.
Claro is the wood we reach for when a commission calls for a slab with a story. Each board is selected for its figure, kiln-dried, and shown to you before the first cut. If the piece you have in mind wants a single slab, a live edge, or color that moves, this is where the conversation usually ends up. If you know what you want, we find it. If you are not sure yet, we help you discover it.
Every piece that leaves our shop is finished one of two ways, and the choice is yours. We offer a 2K polyurethane spray finish applied in our commercial spray booth, or a hand-rubbed oil finish using Odie's Universal Oil. Both are exceptional finishes. They simply offer different things, and understanding the difference helps you care for your piece properly.
The 2K polyurethane finish is applied in our dedicated commercial spray booth, a capability that most small custom furniture shops simply do not have. The result is a surface that is hard, consistent, and highly resistant to moisture, heat, and daily use right from the start. It requires less ongoing maintenance and is well suited to households with children, heavy everyday use, or clients who prefer a more set-it-and-forget-it approach to care. For day-to-day cleaning, wipe the surface with a soft damp cloth and dry it promptly. Avoid harsh chemical cleaners. The finish will perform beautifully for many years without any reapplication.
The hand-rubbed oil finish is a different experience entirely. We finish these pieces with Odie's Universal Oil, a food-safe, non-toxic hard wax oil that penetrates the wood rather than sitting on top of it as a film. The result is a surface that feels alive under your hands. You are touching the wood itself, not a coating over it. The finish deepens and enriches the grain in a way no spray finish can replicate, and it becomes more beautiful with age and use.
An oil finish does ask a little more of you over time. Once a year, or whenever the surface begins to look a little dry or flat, a light maintenance coat of Odie's Universal Oil is all it needs. Apply a small amount with a soft cloth, work it into the surface, allow it to set for roughly 45 minutes to an hour, then buff off any excess with a clean dry cotton cloth until the surface feels dry to the touch. Allow the piece to rest for 24 to 48 hours before subjecting it to standing liquids. That is the full extent of the maintenance required. For everyday cleaning, wipe with a soft dry cloth or a lightly damp one as needed.
Regardless of finish, use trivets and felt pads under anything hot or rough, and avoid leaving standing water on the surface for any length of time. Keep your piece out of prolonged direct sunlight to prevent uneven lightening of the wood over time.
If you have any questions about caring for your piece or would like guidance on maintenance, contact us. We stand behind every piece we build and are always glad to help.
