Juglans hindsii
Claro Walnut
California's figured walnut, and the wildest figure in the walnut family. Graft unions between English walnut and Hinds rootstock produce violet, gold and marbled patterns no other walnut can match.
- Uzgaja se izvan Europe i uvozi preko europskih partnerskih skladišta.
- Botanička skupina. Meko drvo potječe od četinjača, a tvrdo od listača.
- Botanička porodica kojoj vrsta pripada.
Obavijestite me kada stigneReferentna vrsta. Trenutačno nema komada na zalihi.
Odgovara li vašem projektu?
Izvrsno za
- Heirloom dining tables
- Statement live-edge slabs
- Executive desks
- Gun stocks
- High-end cabinetry feature panels
Nema vrste Claro Walnut u trenutačnoj ponudi
Slične vrste na zalihi
Vrsta Claro Walnut trenutačno nije dostupna. Ove vrste odgovaraju istim projektima i imaju dostupne komade.
Primajte obavijesti o vrsti Claro Walnut
Poslat ćemo vam poruku e-pošte kada nove daske vrste Claro Walnut stignu u KORENA ponudu. Svaki je komad jedinstven pa je rana obavijest važna.
Izgled drva
Kako izgleda
Heartwood ranges from chocolate brown to purple-grey, often streaked with violet, gold and reddish tones. Sapwood is pale cream and usually contrasts sharply. Figure is the headline: fiddleback, marbled, feathered crotch, and dense burl clusters are common in graft-figured boards. Grain is typically straight in clear sections but wild around figure. Medium texture, satin natural lustre.
- Chocolate-brown to purple-grey heartwood
- Violet, gold and reddish streaking
- Pale cream sapwood with sharp contrast
- Fiddleback, marbled and crotch figure common
- Often heavily figured; prized for slabs.
Obrada
Obrada
Works well by hand and machine across sawing, planing, sanding, turning and carving. Glues and screws without drama. Wild grain around figure and burl tears out easily, back off feed rates, use sharp tooling, and finish-sand rather than hand-plane figured zones. Steam-bending is moderate at best; not the wood for tight curves. Note: published laboratory data for Claro is limited. No reliable MOR or MOE figures exist. For structural calculations, treat mechanical properties as broadly comparable to Black Walnut (Juglans nigra) and design with that proxy in mind.
Završna obrada
Takes oil, hardwax and lacquer cleanly. Oil finishes deepen the violet and gold tones and lift the chatoyance in fiddleback areas, worth a sample board before committing. Sand to 180–220 grit; going finer can close the surface and dull the figure. Open pores will show under high-build finishes, so grain-fill if a glass-flat surface is required.
Sušenje
Dries at a moderate rate. Shrinkage is moderate (radial 4.0–4.7%, tangential 6.0–7.0%, volumetric 10.2–11.2%) with a tangential-to-radial ratio around 1.5, manageable, but figured and crotch sections can check or honeycomb if pushed. Slow kiln schedules and weighted stickering are standard for slab stock. Acclimatise indoors for several weeks before machining.
Koliko će se pomicati?
Drvo bubri i skuplja se po širini kako zrak postaje vlažniji i suši. Procijenite sezonsko pomicanje plohe od vrste Claro Walnut prije projektiranja pričvrsnica.
Očekivano sezonsko pomicanje
oko 7,4 mm
Plohu pričvrstite pričvrsnicama ili nosačima s utorima, a ne ljepilom ili čvrsto zategnutim vijcima.
Model linearnog skupljanja: širina × (skupljanje ÷ 28 % zasićenosti vlakana) × sezonska promjena vlažnosti. Za vrstu Claro Walnut rabi se 6,5 % tangencijalnog skupljanja. Ovo je procjena za planiranje, ne jamstvo.
Koliko košta
Sigurnost i nabava
- Uzgaja se izvan Europe i uvozi preko europskih partnerskih skladišta.
- Status na Crvenom popisu IUCN-a: globalna procjena očuvanosti ove vrste.
Walnut dust contains juglone and is a known respiratory and skin sensitiser. Use extraction at the source, wear an FFP3 mask when sanding, and keep offcuts away from horses and dogs, juglone is toxic to both. Cured finished surfaces are food-contact safe.
Pročitajte cijeli vodičDetaljne bilješke o šari, promjeni boje, obradi i stabilnosti.
What Claro Walnut actually is#
Juglans hindsii is the northern California black walnut, and it produces the most dramatic figure in the walnut family. Its reputation rests on something that is not really a property of the species at all.
Claro is widely used as rootstock for English walnut, Juglans regia, in Californian orchards. Where the two species are grafted together, the grain at the union becomes violently disrupted, producing marbled patterning in violet, gold, orange and near black that neither species shows on its own.
Slabs cut through or near that graft union carry figure no other walnut can match, and they are priced accordingly. Plain Claro away from the union is a good walnut; graft figured Claro is a different proposition entirely.
The missing numbers#
Density at 640 kg per cubic metre and Janka hardness at 5,030 N are sourced and displayed on the species record. Modulus of rupture and elastic modulus are not shown, and that is deliberate.
Published laboratory data for Claro is limited, and no reliable MOR or MOE figures appear in the references KORENA cites. Borrowing values from Juglans nigra or Juglans regia and presenting them as Claro would produce a page that looks complete and specifies a wood that was never tested.
The practical consequence: do not use Claro where a calculated load path depends on assumed stiffness or bending strength. For a tabletop, a cabinet or a decorative slab, which is what this species is actually for, the missing figures do not constrain the decision.
Pitanja kupaca
Pitanja kupaca
What makes Claro Walnut figure so dramatic?
Much of it comes from graft unions. Claro is widely used as rootstock for English walnut orchards, and where the two species join, the grain becomes violently disrupted, producing marbled violet, gold and dark brown patterning that neither species shows alone. Slabs cut through that union carry figure no other walnut can match.
Why are no MOR or MOE figures listed?
Published laboratory data for Claro is limited and no reliable modulus of rupture or elastic modulus values exist in the references KORENA cites. Rather than borrow figures from Juglans nigra or regia and label them Claro, those fields are left empty. Density at 640 kg per cubic metre and Janka at 5,030 N are sourced and shown.
How does it compare with Black Walnut?
Claro is harder at 5,030 N against 4,490 N and considerably more variable in colour, running from pale gold through orange brown to near black, often within a single slab. Black walnut is more uniformly chocolate. Claro is bought for figure and colour variation; black walnut for consistency.
Is walnut dust a hazard?
Mehanička svojstva
Tehnički podaci
Objavljene referentne vrijednosti. Kada se izvori ne slažu, prikazuje se raspon, a uobičajena vrijednost rabi se za gornje ljestvice.
| Gustoća (kg/m³)Masa po kubičnom metru pri približno 12 % vlažnosti. Teže drvo obično je tvrđe i čvršće. | 600–680 kg/m³uobičajeno 640 kg/m³ |
|---|---|
| Tvrdoća prema Janki (N)Sila potrebna da se čelična kuglica utisne do polovice u drvo. Standardna mjera otpornosti na udubljenja. | 4,700–5,400 Nuobičajeno 5.030 N |
| Radijalno skupljanjeSkupljanje preko godova, od sirovog do potpuno suhog drva. Tako se pomiču radijalno rezane daske. | 4.0–4.7 % |
| Tangencijalno skupljanjeSkupljanje duž godova. Tako se pomiču tangencijalno rezane daske i većina širokih dasaka. | 6.0–7.0 % |
| Volumno skupljanjeUkupna promjena volumena od sirovog do potpuno suhog drva. Niža vrijednost znači veću stabilnost. | 10.2–11.2 % |
| Prirodna trajnost (EN 350) |
