Hook Knife (Crook Knife)

identity — Family A

• Name: spoon knife; hook knife. "Sloyd hook knife" or "slöjd spoon knife" only where a source or maker uses the compound. "Sloyd knife" / "slöjd knife" alone means the straight carving knife and is not a synonym (review fix 10).
• Not to be confused with: this corpus's Carpet Knife, whose "hook knife" is an unrelated flooring utility knife.
• Definition: a curved carving knife used to hollow concave surfaces. One primary handle; may be controlled with one or both hands depending on model and taught grip (review fix 6).
• One-line: a curved carving knife for spoon bowls, ladles, cups and related concave forms; cutting direction and hand position depend on the model's edges.

identity — Family B

• Name: crooked knife. Culturally specific names are used only where a source supports them: mocotaugan appears in the Royal Museums Greenwich record [B-RMG]; the Hudson Museum's pages include bikahtagenigan [B-Hudson1]. Attribution is at the community and object level, not a generic "Eastern Seaboard / Great Lakes" label (NMAI's Kitigan Zibi Anishinabeg record is an example) [B-NMAI].
• Definition: a one-handed drawknife with a characteristic handle, used for slicing and shaving flat, convex and hollowed wooden forms [B-Hudson2]. Hollowing bowls is one use, not its identity.

✦ how NOT to use it — Family A

dangerous (injures the user) — review fix 1, the holding finding

• Identify the edges first. Single-edged/handed or double-edged? Choose grip and direction only after that [A-MoraColl].
• Follow the maker's technique for that model. A model designed for push and pull cuts is not pull-only [A-Mora162].
• Keep fingers, thighs, torso and the supporting hand outside the projected cut and slip path. Reposition the work rather than cutting toward a body part.
• Beginners: stable posture and work support, small controlled cuts, and away-from-body cuts unless being taught a specific braced technique [A-MoraBeg].
• Touch or guide only a surface positively identified as a blunt spine. Never put an off-hand thumb on the live second edge of a double-edged knife [A-MoraColl].
• Keep the edge sharp and undamaged; stop if control needs excessive force.
• Store and carry with edge protection.
• Gloves can reduce some laceration risk but do not make an unsafe cut path safe [A-MoraBeg].
• Braced grips are named practitioner techniques, not universal instructions. The chest-lever and can-opener grips (Jögge Sundqvist, via Robin Wood) are taught for control of specific cuts [HK8]; learn them from a teacher, and never apply them to a double-edged model in a way that puts the torso or hand against the second edge. Detailed operation is Reed's.
• Removed (the reviewer's safety notes): the single forum injury quotation, which could not be re-confirmed; the hazard is mechanically evident and the manufacturer guidance above is stronger.

damaging (ruins the tool or work)

• Honest gap. Sharpening-maintenance guidance exists (a dowel-and-strop routine; resharpen roughly every 15–20 minutes of carving) [HK16], but no verified damage failure mode was located.

beginner-trap

• Thumb in the blade's path. Asaya Sculpture's guide names the potato-peeler, pivot and twist-cut grips, each with a warning that the thumb must never sit in the blade's travel path [HK16]. On a double-edged model, that includes the back edge.
• Carrying a grip from one model to another — from a handed 164 (blunt back) to a double-edged 162 (live back) is the specific dangerous transfer.

lineage-misuse

• Treating it as a drop-in scorp or inshave — they differ in handles, tangs, leverage, sweep and direction [HK-SC1].
• Treating it as a crooked knife, or the reverse — see Family B.

✦ how NOT to use it — Family B

• Do not import Family A grips or cut directions (chest-lever, can-opener, spoon-knife pull cuts); the crooked knife has its own handle, grip and community-specific technique [B-Hudson2][B-Dana].
• General edged-tool controls: identify the edge and bevel orientation; keep the supporting hand and body outside the projected cut and slip path; support the work; keep the edge sharp and stop if control needs force; protect the edge in storage. (Modern edged-tool practice, not a community-specific instruction.)
• Honest gap: no maker or community safety instruction specific to the crooked knife was among the reviewer's named sources; this layer is thin and flagged.

correct use — Family A

(Brief — the workbench holds the operation.)

Hollowing a concave surface — a spoon's bowl, a ladle, a cup — usually after the exterior has been roughed with an axe and straight knife [HK12]. Direction and grip follow the model and the maker's instructions: double-edged 162/163 are designed for push and pull cuts; a handed single-edged model cuts one way and may allow off-hand guidance only on its blunt side [A-Mora162][A-Mora163][A-MoraColl]. Material (review fix 11): green wood is common and easier to carve; dry wood can be carved with sharper tools, smaller cuts and greater effort; green work changes as it dries [A-MoraBeg].

correct use — Family B

(Brief — community-specific technique is the community's; the workbench holds operation.)
General slicing and shaving as a one-handed drawknife: basket stock, axe handles, canoe frames and ribs, paddles, poles, snowshoe frames, decoys, bows, bowls and dishes [B-Hudson1][B-Hudson2][B-Dana][B-SIcanoe].

✦ matching — Family A

• does: hollows spoon bowls, ladles, cups/kuksas and other concave carving.
• suits: governed by hook radius, depth, edge count, handedness, stock condition and access — e.g. the tight-radius 162 for deeper hollows, the shallow 163 for larger-radius bowls [A-Mora162][A-Mora163]. "Deep narrow interior" limits are dimensional and model-specific, not a blanket exclusion.
• kit-fit: axe → straight carving knife → spoon knife [HK12]. Substitutes for a small scorp or inshave only where work size, sweep, cutting direction and user control are compatible; handedness, grip, cutting direction, leverage and surface geometry differ [HK-SC1].
• not-for (Family A only, review fix 5): flat or convex shaping, which belongs to a straight knife. This exclusion never applies to Family B.
• access: inexpensive and widely sold; beginners start with stable posture, work support, small controlled cuts and away-from-body cuts [A-MoraBeg]; braced grips are learned with instruction.
• context: a live, taught craft — Spoonfest, the Green Wood Guild, North House Folk School [HK9][HK12].

✦ matching (review fixes 4, 5) — Family B

• does: canoe components, paddles, poles, snowshoe frames, basket rims and handles, axe handles, decoys, bows, bowls and dishes, and general slicing and shaving — flat, convex and hollowed forms [B-Hudson1][B-Hudson2][B-Dana][B-SIcanoe][B-RMG].
• suits: governed by blade profile, bevel orientation, handle and grip, stock, and community-specific technique.
• not-for: Family A's concavity-only exclusions do not apply. No Family B exclusion is asserted beyond ordinary edged-tool limits.
• Uses are documented, not provisional: Hudson Museum, Royal Museums Greenwich and the Smithsonian canoe publication directly support them.

anatomy — record per model (review fix 6) — Family A

Record for every model: edge configuration (double-edged / bidirectional; right- or left-handed single edge), open or closed curve, hook radius and blade length, and whether the maker permits off-hand support on a blunt surface.

• Morakniv Hook Knife 162: 55 mm, tight-radius, double-edged, for scoops, bowls and deeper hollows; designed for push and pull cuts [A-Mora162].
• Morakniv Hook Knife 163: 74 mm, shallow curve, double-edged, for larger-radius bowls [A-Mora163].
• Morakniv 164: handed, single-edged; Morakniv says the blunt side can be guided with the opposite hand [A-MoraColl].
• Djärv (S. Djärv Hantverk AB, Avesta, founded 1989): catalogue names include "Crook knife," "Carving hook," "Ring tool," "Loop tool," and "Spoon knife" in hollow / standard / large / large-with-long-handle grades [HK11]. Catalogue names prove sale, not mechanical equivalence (review fix 12).
• No claim is made about what "most" traditional patterns are.

anatomy — Family B

• Blade profile, bevel orientation, handle and grip vary by maker and community; record them per object. The Smithsonian's Bark Canoes and Skin Boats of North America documents an upturned-tip variation used for hollowing bowls and dishes [B-SIcanoe]. A Smithsonian NMAH example (DL.59.0871, 1850–1900) has a steel blade made in England, maple handle and fibre/hide binding [HK1].

trades — Family A

• Green woodworking / spoon, cup and bowl carving (replaces "bowl turning," which requires a lathe — review fix 11).

trades — Family B

• Birchbark canoe building, paddle and pole making, snowshoe making, basketry, implement and vessel making — community-specific and attributed [B-Hudson1][B-SIcanoe][B-Dana].

lineage and history — Family A

• Functional neighbours, not ancestors: the Scorp and the Inshave, described separately (review fix 9): a scorp commonly has a U- or loop-shaped blade with two tangs seated into one handle; an inshave commonly has two handles, one at each end of the curved blade. Neither is described as "scorp/inshave" for handle or tang count.
• Companion: the straight sloyd / carving knife.
• Scandinavian dating is unresolved (review fixes 7, 8). No securely dated early Scandinavian spoon-hook artifact was located in this research. The sources reviewed for the Mästermyr chest did not identify a hook knife [HK3][HK4]; that is one chest described by secondary sources, not evidence of absence from a region or period. Educational sloyd at Nääs — Otto Salomon's method and teacher seminary — belongs to the late nineteenth century (Sörmlands museum places the school in the 1870s) [A-Naas][A-Sormland]; it is a teaching movement, not a date for the blade.
• Modern craft transmission. Wille Sundqvist (1925–2018) is described in an obituary as a design adviser to Frosts and KJ Eriksson, working with Jögge Sundqvist and Beth Moen on factory spoon-knife geometry [HK5]. His Swedish Carving Techniques (Taunton, 1990) is widely cited as a standard slöjd reference, and Peter Follansbee named it his favourite spoon-carving book [HK6][HK7]. (Status claims such as "definitive handbook" are those sources' words.)
• Patents: no relevant patent was located in the searches performed (Google Patents, Justia) [HK-gap]. No conclusion is drawn about the family's patent history or why.

lineage and history (review fix 3) — Family B

• About 1000 BP: Hudson Museum archaeological evidence identifies modified beaver-incisor tools from the Carson Site used in the crooked-knife manner [B-Hudson1].
• By the 1700s: the Hudson Museum reports Wabanaki artisans making metal-bladed crooked knives [B-Hudson1].
• 1819–1837: a surviving metal crooked knife / mocotaugan at Royal Museums Greenwich [B-RMG].
• 1850–1900: Smithsonian NMAH DL.59.0871 — one catalogued example, not an earliest example [HK1]. c.1910: NMAI, Kitigan Zibi Anishinabeg [B-NMAI].
• A continuing tradition: the Hudson Museum's "Carving Traditions with Joe Hugga Dana, Penobscot" gives named, community-situated contemporary testimony on construction and uses [B-Dana].
• No documented connection to Family A was located; neither is described as descending from the other.

human side — Family A

• Jögge Sundqvist teaches the "chest lever grip" (informally "chicken wings" or "taste the woodchip") and the "can opener grip," as recorded by Robin Wood at Spoonfest [HK8]; he also teaches at North House Folk School [HK9].
• Del Stubbs / Pinewood Forge studied with the Sundqvists before founding Pinewood Forge; the account rests on vendor and forum corroboration, not Pinewood Forge's own page [HK10] (MODERATE).
• Barn the Spoon (Barnaby Carder, UK) uses "a semi-circular-bladed knife" for spoon bowls; co-founded Spoonfest and the Green Wood Guild [HK12].
• Removed: the unverified "Jon Mac" authority line (review fix 13).

human side — Family B

• Joe Hugga Dana (Penobscot) — construction and uses including ribs, paddles, basket handles, vessels, bows and general utility [B-Dana].
• Jarrod Stone Dahl — a contemporary crooked-knife maker and teacher, named across practitioner sources [HK13] (MODERATE-HIGH).

✦ proof of existence (both families)

• Family B: Hudson Museum archaeological record (~1000 BP; metal blades by the 1700s) [B-Hudson1]; Royal Museums Greenwich object, 1819–1837 [B-RMG]; Smithsonian NMAH DL.59.0871, 1850–1900 [HK1]; NMAI Kitigan Zibi Anishinabeg object, c.1910 [B-NMAI].
• Family A: current manufacture (Morakniv 162/163/164; Djärv) [A-Mora162][A-Mora163][A-MoraColl][HK11]. No securely dated early Scandinavian artifact located; not a verified negative. A Nordiska Museet (digitaltmuseum.se) search returned generic knife records; no hook-knife object page confirmed.
• Patents: none located in the searches performed [HK-gap].

references

Family A

• [A-Mora162] Morakniv, "Hook Knife 162," https://www.morakniv.com/en-ca/products/hook-knife-162 — 55 mm tight-radius double-edged; push and pull cuts (reviewer-named).
• [A-Mora163] Morakniv, "Hook Knife 163," https://www.morakniv.com/en-eu/products/hook-knife-163 — 74 mm shallow double-edged (reviewer-named).
• [A-MoraColl] Morakniv, "Whittling knives" collection, https://www.morakniv.com/en/collections/whittling-knives — 162/163 double-edged; 164 handed single-edged; blunt-side guidance (reviewer-named).
• [A-MoraBeg] Morakniv, "Whittling for Beginners," https://us.morakniv.com/blogs/woodcarving/whittling-for-beginners — posture, small cuts, sharp tools, cut protection, away-from-body cuts; green and dry wood (reviewer-named).
• [A-Naas] Nääs Slott och Slöjdseminarium, "Nääspedagogiken," https://naas.se/sloejden/naeaespedagogiken/ (reviewer-named).
• [A-Sormland] Sörmlands museum, Nääs-method teaching chart, 1894, https://sokisamlingar.sormlandsmuseum.se/objects/c24-275761/ (reviewer-named).
• [HK3] Viking Archaeology, "The Mästermyr Find," viking.archeurope.com — secondary (MODERATE).
• [HK4] The Viking Herald, "Exploring the Mästermyr Chest," thevikingherald.com — popular (MODERATE).
• [HK5] Nordiska knivar blog, Wille Sundqvist obituary (2018), nordiskaknivar.wordpress.com (MODERATE-HIGH).
• [HK6] Wille Sundqvist, Swedish Carving Techniques (Taunton, 1990) — the book itself; "standard reference" status is attributed, not asserted.
• [HK7] Peter Follansbee, blog comment, pfollansbee.wordpress.com, January 2016 (HIGH).
• [HK8] Robin Wood, "Spooncarving with Jögge Sundqvist," robin-wood.co.uk, August 2012 (HIGH).
• [HK9] North House Folk School, Jögge Sundqvist course listing, northhouse.org (MEDIUM).
• [HK10] Pinewood Forge / Del Stubbs — vendor and forum corroboration (BladeForums, BushcraftUK) (MODERATE).
• [HK11] S. Djärv Hantverk AB, "About Us," https://djarv.se/en/about-us/ (HIGH).
• [HK12] Spitalfields Life, "Barn the Spoon, Spoon Carver," November 2012, spitalfieldslife.com (HIGH).
• [HK16] Asaya Sculpture, spoon-carving hook-knife technique guide (2025), asayasculpture.com (MODERATE).
• [HK-SC1] This corpus's Scorp entry and the reviewer Tested/Scorp — internal consistency reference only, not external proof.

Family B

• [B-Hudson1] Hudson Museum, University of Maine, "bikahtagenigan," https://umaine.edu/hudsonmuseum/crooked-knives/bikahtagenigan/ (reviewer-named).
• [B-Hudson2] Hudson Museum, "Drawknife," https://umaine.edu/hudsonmuseum/crooked-knives/drawknife/ (reviewer-named).
• [B-Dana] Hudson Museum, "Carving Traditions with Joe Hugga Dana, Penobscot," https://umaine.edu/hudsonmuseum/teacher-resources/wabanaki-study-unit/carving-traditions-with-joe-hugga-dana-penobscot/ (reviewer-named).
• [B-RMG] Royal Museums Greenwich, "Crooked knife," https://www.rmg.co.uk/collections/objects/rmgc-object-2614 — 1819–1837 (reviewer-named).
• [B-NMAI] National Museum of the American Indian, Kitigan Zibi Anishinabeg crooked knife, https://americanindian.si.edu/collections-search/object/NMAI_163851 — c.1910 (reviewer-named).
• [B-SIcanoe] Smithsonian Institution, Bark Canoes and Skin Boats of North America, https://repository.si.edu/bitstream/10088/9991/1/USNMB_2301964_unit.pdf (reviewer-named).
• [HK1] Smithsonian NMAH, "Crooked Knife," DL.59.0871, accession 162489, 1850–1900 (HIGH).
• [HK13] Robin Wood, Peter Follansbee's blog and Woodspirit Handcraft naming Jarrod Stone Dahl as a crooked-knife maker and teacher (MODERATE-HIGH).

Search record

• [HK-gap] Patent searches, Google Patents and Justia, including "Flexcut," Run 522 (2026-08-24): no relevant patent located.

Removed: [HK2] (generic "secondary sourcing," superseded by the Hudson Museum, RMG and Smithsonian sources); [HK14] (unverified blog author); [HK15] (forum injury quote not re-confirmable); [HK17] (unfetched forum anecdotes); [HK-SC2] (relayed through a sibling entry).

open classification question (review fix 12) — Family A

Ring and loop tools are not assumed to be hook-knife variants. Closed-loop cutters differ in edge access, sharpening, entry into the work and cut direction; record exact construction and use from model pages before deciding whether they are variants, siblings or separate entries.

FAMILY B — Crooked Knife (Indigenous Northeastern North American one-handed drawknife)

The reviewer's corrections (13)

• BLOCKER — Exact claim: “A curved-blade knife, held and controlled with one hand (often braced against the chest o …
• BLOCKER — Exact claim: The title, alternate-name list, summary, and one-line definition treat “Hook Knife,” “Croo …
• SHOULD-FIX — Exact claim: “no artifact predates roughly 1850 in either documented lineage,” and the North American f …
• SHOULD-FIX — Exact claim: Canoe- and snowshoe-building associations are “not independently deep-sourced,” “reduced c …
• SHOULD-FIX — Exact claim: “It is not a whittling or shaping knife for flat or convex surfaces”; “No source found fra …
• SHOULD-FIX — Exact claim: “single-bevel on most traditional Scandinavian patterns”; “held and controlled with one ha …
• SHOULD-FIX — Exact claim: “the 20th-century Swedish Sloyd educational movement” is the earliest solidly dated Scandi …
• SHOULD-FIX — Exact claim: The Mästermyr search is “a genuine, checked negative” showing the ancient-tool hypothesis …
• SHOULD-FIX — Exact claim: “both bent-blade, tanged, two-handle-seated tools” and later “a scorp/inshave is a two-tan …
• SHOULD-FIX — Exact claim: “slöjd knife” is an alternate name for the hook knife.
• SHOULD-FIX — Exact claim: “Green wood is the dominant material culture,” with “no strong dry-wood counter-evidence,” …
• SHOULD-FIX — Exact claim: Ring and loop tools are “deep-hollow variants” of the hook knife, and Djärv's catalog name …
• MINOR — Exact claim: The provenance and closing paragraph describe “two research passes,” “Hewn,” and d …