Scorp

identity

• names (review fix 3): scorp (also scorper) and inshave are overlapping observed labels, used inconsistently by makers, retailers and teachers. Ray Iles sells two-handle half-circle and larger tools as scorps [TFW-S][TFW-L]; Barr's "Mike Dunbar Style Scorp" has handles (plural) [BARR]; Lonon titles a product "Chair Maker's Inshave / Scorp" [LON]; retailers group scorp, inshave and round-shave together [TFW-L][SC19]. Christopher Schwarz uses both words for the same two-handle tool [SC6][SC7]; Peter Galbert titles a post "or the inshave or whatever you call it, I don't know" [SC8]; David Fisher: "I've seen tools like this called inshaves or scorps, so take your pick" [SC5]. Some sources define the scorp as a near-closed loop with both tangs in one handle [SC1][SC4] — that is one usage, not the trade definition.
• identify the artifact, not the name: rigid curved blade; sweep or inside diameter; cutting-edge width; one or two handles and their orientation; bevel placement (where the maker documents it); intended stroke (pull, push, or both); work scale.
• family / category: Surfacing tools → rigid curved bare-edge hollowing tools; related to the Drawknife and Inshave; no sole, no mouth, no depth stop.
• one-line: a rigid, strongly curved edge tool used to hollow concave wood — primarily for stock removal — whose geometry, handle arrangement and stroke vary by model.

✦ How NOT to use it

dangerous — workholding and edge controls (review fixes 1, 2)

• Model-specific warning, attributed correctly: for the two-handle Ray Iles Spoon Carver's Scorp, Tools for Working Wood instructs that the work be secured in a vise or with a holdfast and not carved against the knee: "(Do not whittle with it with your knee!)" [TFW-S].
• General controls (independent of the name):
  • Clamp or mechanically secure the work. Do not use the lap or knee as backing.
  • Identify the model's intended stroke first; in either direction, keep the free hand and the body outside the projected edge path, take controlled cuts, and allow for breakthrough or sudden grain release.
  • Inspect the edge, handles, ferrules and tang seating before use.
  • Sheath or otherwise protect the edge in transport and storage.
  • Preserve the model's sharpening geometry; a very sharp edge needs less force but remains a severe laceration hazard.
• two-point catch (structural): a curved edge can bury both ends of its arc in a hollow at the wrong angle [SC-INSHAVE] — reasoning, not a documented incident.
• powered alternatives: see matching — never a portable circular saw; rotary tools only with the listed controls [OSHA-HS][OSHA-AG].

damaging

• ruining the curved bevel through incorrect sharpening; recovering a neglected scorp is a real job [SC8].
• tear-out at the grain reversal — approach the low point from both sides [SC1][SC3].

beginner-trap

• over-cutting on a first real seat [SC9]; Schwarz on the tight Barr pattern: "it's easy to overdo it" [SC6].
• assuming a stroke direction carried over from another model or from push tools [TFW-S].
• shopping by name — "scorp" and "inshave" listings overlap; check sweep, size, handles and stroke [TFW-L][LON].

lineage-misuse

• scorp ↔ inshave: treating the names as fixed forms in either direction misleads; match on geometry.
• scorp ↔ hook knife: grip, scale and cutting direction differ; a full-size seat tool handled like a hook knife loses control [SC14][SC15].
• scorp ↔ travisher: the travisher's sole limits depth and smooths; the scorp removes stock [SC7].

correct use

Brief — the workbench holds operation.

• role: rough hollowing and stock removal in chair seats, bowls, troughs and spoons; commonly followed by a travisher, compass plane, scraper, gouge or abrasive [SC7][SC13][LON].
• stroke (review fix 4): many chairmaker's scorps are used in controlled pulls; some two-handle half-circle models are intended for cuts both toward and away from the user (Ray Iles spoon scorp) [TFW-S][BARR]. Follow the maker's intended direction for the exact model.
• grain: work across the grain or with careful attention to it; the hollow reverses grain at its low point — approach from more than one direction and reverse when the grain tears [SC1][SC3][TFW-S].
• cuts: small, controlled cuts; practice on scrap first [SC9].
• stock: used on green and seasoned stock (oak, cherry, walnut, elm, ten-year Welsh oak) [SC7][SC9][SC13].
• surface (review fix 11): fine controlled cuts can leave a textured surface that may be refined further or retained as the intended finish [PWR].

✦ matching — for the app's read (the reviewer schema notes)

• primary function: concave hollowing / stock removal.
• contexts: Windsor and other chair seats, bowls, troughs, spoons, local concave transitions.
• key matching on: curvature/sweep, edge width, handle and grip arrangement, intended stroke, clearance, stock, scale, desired surface. Do not key identity on handle count alone, the name alone, or an inferred family-wide bevel.
• common next operations: travisher, compass plane, scraper, gouge or abrasive, by geometry and intended surface.
• related, not interchangeable by default: inshave, travisher, hook knife, bent gouge, compass plane, powered rotary carving.
• surfaces (review fix 12): the strongly curved edge is a poor match for broad flat or convex surfacing; its primary role is local or broad concave hollowing. Small offset forms can make local detail cuts.
• powered carving (review fixes 1, 14): a different process, not a substitute. Powered rotary carving can remove stock quickly but changes speed, tactile feedback, surface, dust, noise, guarding and training requirements; shaped rotary cutters and jigs can also produce repeatable concavity. A fixed-sweep hand edge offers direct tactile control and a characteristic faceted surface. Do not use a portable circular saw for seat carving — no manufacturer-documented guarded method is cited, and OSHA documents guard requirements and severe kickback injuries for handheld saws [OSHA-HS][OSHA-KB][OSHA-PPT]. IF a rotary carving or sanding alternative is chosen, THEN: a manufacturer-approved wood-carving or sanding accessory whose rated speed meets or exceeds the tool's speed; the correct guard; two-handed control; clamped work; body outside the ejection path; eye/face and hearing protection; respiratory and dust control (and ignition control for dust); inspection of tool and accessory [OSHA-AG][OSHA-S][OSHA-WD].
• access (mandate rule — no beginner verdict; review fix 5): in Schwarz's chair-seat teaching, beginners often found the chairmaker's scorp difficult to control [SC7]. Removal rate and control vary with geometry, sharpening, setup, stock and technique. Use requires instruction in workholding, the model's stroke direction, hand and body position outside the blade path, grain reading, and maintaining a curved bevel (or a pre-sharpened tool); a scrap practice pass first [SC8][SC9].
• revival: a deliberate hand-tool choice in chairmaking and carving; heritage-motivated buying is visible in maker reviews [LON][SC13].

anatomy — model-specific (review fixes 6–9, 18)

• bevel (review fix 9): state bevel face and angle only where a source documents the exact model (e.g. a 25° figure is given for one Hirsch inshave [SC21]). Otherwise preserve the maker's existing geometry and follow model-specific sharpening guidance. Galbert's slightly rounded bevel is attributed practitioner advice [SC8].
• mechanics: the curved edge limits instantaneous contact width and concentrates the cut in a hollow. It has no depth stop; depth is governed by presentation, edge geometry, grain, leverage and user control. "No sole" contrasts it with a travisher or compass plane.
• (Removed per review fix 8: the inference that a full-tang listing implies stub-tang scorps exist.)

variations (living) — dated (review fix 17)

Currently listed as of the 2026-07 build and the reviewer's 2026-07-30 check; prices and stock change; listings do not prove uninterrupted manufacture.

• chairmaker's hollowing tools — Barr (~4″), Lonon (shallow center sweep to reduce later travisher work) [BARR][LON].
• spoon and bowl forms — Ray Iles 3″ two-handle half-circle; Hirsch ~75/85 mm [TFW-S][HWW].
• one-handle offset detail form — pfeil (135° handle) [WC-P].
• small detail hooks — Flexcut KN21–24 [SC19].
• regional bottom profile — flatter German-pattern inshaves vs. tight circular American chair pattern (attributed, see history) [SC6].
• related — hook knives (Wood Tools, Mora, Beavercraft) [SC14][SC15]; Veritas Pullshave, a soled pull tool [SC22].

trades

• Windsor and stick chairmaking — the best-documented current use [BARR][SC23][SC13].
• bowl and spoon carving [SC5][TFW-S][SC14].
• cooperage — asserted at secondary level only [SC1][SC3].
• teaching — chairmaking school tool lists [SC23].

lineage (review fix 10)

• related curved-edge hollowing tools: the Inshave (overlapping name and form), the cooper's jigger (straight and curved sections in one blade [SC3]), and the Hook Knife (Crook Knife).
• deep-time family evidence: the corpus's Inshave entry carries Theophilus (De diversis artibus, c.1122 — "curved and sharp on the inside and has two handles"), the Mästermyr find and the Novgorod record for curved bare-blade tools generally [SC-INSHAVE]. No securely dated example of a one-handle near-loop form was established; if one is found, record its actual geometry and provenance rather than mapping a modern handle-count rule onto it.
• workflow, not descent: the Travisher is a common next tool in the chair-seat workflow, not a proven descendant [SC7][SC13][LON].
• hook knife (review fix 13): a related smaller-scale option for spoon and bowl hollowing; handedness, grip, cutting direction, leverage, sweep and surface geometry differ. Match it only where work size, sweep, cutting direction and user control are compatible [SC14][SC15]. See its own entry.

history

• cooperage: secondary sources tie curved hollowing knives to barrel-stave work and name the German Fasschaber [SC1][SC3][SC6] — secondary only; reduced confidence.
• Mike Dunbar pattern (review fix 15): Barr currently sells a "Mike Dunbar Style Scorp," and contemporary woodworking sources associate this chairmaker's pattern with Dunbar [BARR][SC6]. A Lost Art Press commenter describes American Windsor makers moving from flatter German-pattern inshaves (Ulmia named) toward Dunbar's circular pattern from the mid-1980s [SC6]. The entry has not established its exact date, origin, historical priority, or "default" status — LOW-MEDIUM.
• canon texts: Mercer's Ancient Carpenters' Tools (1929) and Salaman's Dictionary of Woodworking Tools are widely cited about this family but were not read for this entry.
• excluded: an aggregator etymology tying "scorp" to "ancient Egyptians and Celts" — unverifiable [SC-exclusion].

✦ human side

• Christopher Schwarz — in 2017 his seat sequence was scorp → travisher → card scraper → sandpaper, skipping the adze [SC13]. In 2024, after seven years of chairmaking classes, he wrote that beginners "would struggle with the scorp and make a dog's dinner of their seat," called it "basically a Cranky Drawknife" with "a tough learning curve," and told first-timers "You don't need a scorp," steering them to a travisher [SC7]. (A named teacher's experience in a specific chair-seat workflow — not a universal comparison between forms.)
• Peter Galbert — "Scorp Rehab" (2010): "the bevel of the inshave must be ever so slightly rounded... Think of a spoon scooping out ice cream" [SC8].
• Elia Bizzarri — recommends Barr's scorp "right out of the box" and notes the Ray Iles version's handles need heat-bending up to clear the seat [SC23].
• David Fisher — a bowl carver who finds two handles give him more control for deep bowls than a single handle [SC5].
• Wille and Jögge Sundqvist — the Swedish spoon-carving revival and its teaching, a parallel hook-knife tradition [SC16].
• beginners: Chairmaking.org's first-timer, after a softwood practice pass, "inevitably got carried away and went too far in some areas" [SC9]; Woodlandantics and The Peasant's Manor Farm first-seat accounts [SC10][SC11]; a Sawmill Creek thread where experienced members could not identify an estate-sale tool [SC4].

✦ proof of existence

• current manufacture and sale (dated): Ray Iles via Tools for Working Wood; Barr; Hirsch via Highland Woodworking; pfeil via Woodcraft; Lonon; Classic Hand Tools (UK) — listed as of 2026-07 [TFW-S][TFW-L][BARR][HWW][WC-P][LON][SC19]. Present listings do not establish uninterrupted manufacture.
• review: Popular Woodworking, Barr chair scorp review (four-inch diameter; surface from small cuts) [PWR].
• family record: Theophilus c.1122 and archaeological curved bare-blade tools (via the Inshave entry) [SC-INSHAVE].
• research note (not evidence): build searches found no museum accession or patent record for a scorp; scope was not bounded.

references

• [TFW-S] Tools for Working Wood — Ray Iles Spoon Carver's Scorp — https://toolsforworkingwood.com/store/item/MS-SCSCORP (retailer/maker — HIGH for that model)
• [TFW-L] Tools for Working Wood — Scorp by Ray Iles — https://toolsforworkingwood.com/store/item/MS-ISCORP/Scorp%2Bby%2BRay%2BIles (HIGH for that model; terminology overlap)
• [BARR] Barr Specialty Tools — Mike Dunbar Style Scorp — https://barrtools.com/products/mike-dunbar-style-scorp-5-16-x-1-1-4-x-4 (maker — HIGH)
• [PWR] Popular Woodworking — Barr Tools Chair Scorp Review — https://www.popularwoodworking.com/toolreviews/barr-tools-chair-scorp-review/ (hands-on review — MEDIUM-HIGH)
• [HWW] Highland Woodworking — Hirsch Scorp — https://www.highlandwoodworking.com/hirsch-scorp.aspx (retailer — HIGH for listed specs)
• [WC-P] Woodcraft — pfeil Swiss Made Scorp — https://www.woodcraft.com/products/pfeil-swiss-made-scorp (retailer — HIGH for listed specs)
• [LON] Lonon Tools — Chair Maker's Inshave / Scorp — https://lonontools.com/products/wl5tgvms9tbf659u6hhgq7juxwlng5 (maker — HIGH)
• [OSHA-HS] OSHA — Handheld Saws — https://www.osha.gov/etools/machine-guarding/saws/handheld (HIGH)
• [OSHA-KB] OSHA — Woodworking Kickbacks — https://www.osha.gov/etools/woodworking/machine-hazards/kickbacks (HIGH)
• [OSHA-PPT] OSHA — 29 CFR 1910.243 Portable Powered Tools — https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.243 (HIGH)
• [OSHA-S] OSHA — Sanders — https://www.osha.gov/etools/woodworking/production/machines-tools/sanders (HIGH)
• [OSHA-WD] OSHA — Wood Dust — https://www.osha.gov/etools/woodworking/production/wood-dust (HIGH)
• [OSHA-AG] OSHA — Angle Grinder Safety toolbox talk — https://www.osha.gov/sites/default/files/2018-12/fy15_sh-27664-sh5_Toolbox_Angle_Grinder.pdf (HIGH)
• [SC1] Roger Schroeder, "All About Drawknives, Spokeshaves and Scorps," Woodcarving Illustrated #29 (2010). (trade press — MEDIUM-HIGH)
• [SC3] Wood Carving Online, "Drawknives, Scorps, Jiggers and Inshaves" (2021). (MEDIUM)
• [SC4] Sawmill Creek, "Inshave or Scorp?" (2010), George Wilson, Harry Strasil. (forum — MEDIUM)
• [SC5] David Fisher, "Inshave" (2021). (practitioner — MEDIUM)
• [SC6] Christopher Schwarz, "Inshave from Blacksmith Lucian Avery," Lost Art Press (2021) and comments. (practitioner — MEDIUM; comments LOW-MEDIUM)
• [SC7] Christopher Schwarz, "Saddling Tools for Beginning Chairmakers," Never Sponsored (2024). (named teacher — MEDIUM-HIGH, attributed)
• [SC8] Peter Galbert, "Scorp Rehab," Chair Notes (2010). (practitioner — MEDIUM)
• [SC9] Chairmaking.org, "Choosing a New or Used Chairmaker's Scorp or Inshave" (2024). (practitioner — MEDIUM)
• [SC10] Woodlandantics (2010). [SC11] The Peasant's Manor Farm (2023). (practitioner — LOW-MEDIUM)
• [SC13] Christopher Schwarz, "Saddling a Seat," Lost Art Press (2017). (practitioner — MEDIUM)
• [SC14] Sylva Spoon, spoon-carving tools guide (2020). [SC15] Wood Tools, compound-curve spoon knife. (MEDIUM)
• [SC16] North House Folk School, Jögge Sundqvist course. (institutional — MEDIUM)
• [SC19] Classic Hand Tools (UK), inshaves and scorps category. (retailer — MEDIUM)
• [SC21] Highland Woodworking, Hirsch inshave listing (25° bevel for that model). (retailer — model-specific)
• [SC22] Lee Valley, Veritas Pullshave. (MEDIUM)
• [SC23] Elia Bizzarri, tool list, handtoolwoodworking.com. (named practitioner — MEDIUM)
• [SC-INSHAVE] corpus Inshave entry (Run 097). (cross-reference — not independent)
• [SC-exclusion] excluded aggregator etymology.

The reviewer's corrections (18)

• BLOCKER — 1. Unguarded power-tool substitution — Exact claim: An angle grinder with a sanding disc and a portable circular saw are presented as substitutes or revival paths for scorp work.
• BLOCKER — 2. Safety warning attributed to the wrong form — Exact claim: The Ray Iles safety warning is described as applying to “this exact tool” or to the entry’s single-handle closed-loop scorp.
• SHOULD-FIX — 3. Scorp/inshave identity rule — Exact claim: A scorp is a near-closed loop with both tangs in one handle, while an open two-handle arc is an inshave.
• SHOULD-FIX — 4. Universal stroke direction — Exact claim: Scorp work is pulled toward the seated worker or all work is a pull toward the body.
• SHOULD-FIX — 5. Universal speed, aggression, and control comparison — Exact claim: The one-handle scorp is faster and more aggressive than an open two-handed inshave, at the cost of control.
• SHOULD-FIX — 6. Barr geometry — Exact claim: The Barr/Mike Dunbar pattern has a 2¼-inch radius.
• SHOULD-FIX — 7. Hirsch dimensions — Exact claim: The Hirsch form is listed with a 65 mm inside diameter or a 75–85 mm inside/outside range.
• SHOULD-FIX — 8. Tang inference — Exact claim: A full-length or through-tang specification implies that stub-tang scorps exist.
• SHOULD-FIX — 9. Bevel placement and angle — Exact claim: The bevel is on the outside/convex face by consensus, with a broadly applicable angle near 25 degrees.
• SHOULD-FIX — 10. Unproven design genealogy — Exact claim: The scorp descends from the inshave, and the travisher is its descendant.
• SHOULD-FIX — 11. Absolute finishing claim — Exact claim: A scorp is not a finishing tool and cannot leave a finished surface.
• SHOULD-FIX — 12. Absolute surface exclusions — Exact claim: The tool is not for convex or flat work and cannot register there.
• SHOULD-FIX — 13. Hook-knife equivalence — Exact claim: A hook knife is functionally interchangeable at smaller scale.
• SHOULD-FIX — 14. Power-tool impossibility claim — Exact claim: A scorp’s fixed sweep creates a controlled repeatable arc that power tools structurally cannot match.
• SHOULD-FIX — 15. Mike Dunbar history — Exact claim: Mike Dunbar originated or decisively popularized the modern circular pattern in the mid-1980s, with Barr executing it commercially and the form becoming a default.
• MINOR — 16. Process text and status mismatch — Exact claim: Frontmatter says “in-progress — first full pass, ready for review,” while the body discusses a misplaced Inshave in outside staging.
• MINOR — 17. Availability treated as continuity — Exact claim: Current prices, backorder state, or active listings demonstrate commercial continuity.
• MINOR — 18. pfeil steel attribution — Exact claim: The linked Woodcraft pfeil page establishes K720 steel.