Crochet

Identity

• Name: the crochet, or bench crochet — often called a crochet ("hook") in modern English-language hand-tool writing. French crochet broadly means a hook or curved implement [CNRTL]; crochet de bois is not established as the period name of this fixture. Period English naming is unresolved (see the Stent-panel discussion under Human Side).
• Family / category: Workholding — a fixed, passive bench-front fixture, among the simplest early bench-workholding forms, beside the Planing Stop.
• Split (the reviewer schema note): traditional wooden crochet — normally a wooden fixture attached to a substantial bench front; related modern crochet-like stops — later metal and movable devices, including the Whipple Hook and Jan Goris's T-track crochet, which provide a related stop function but differ in capacity, geometry and historical form.
• One-line: A shaped hook fixed to the bench front that arrests a board's forward travel for edge planing and some vertically held joinery; an acute V adds some lateral wedging, but it does not clamp two-sided, does not support the board's weight, and needs holdfasts, a clamp and/or support below depending on the operation.

✦ How NOT to Use It

not-for: treating it as a clamp; treating it as a shelf; high-force operations or short/irregular stock without other restraint.

dangerous — rebuilt (review fix 7). Organized by energy and movement:

• Release — attachment or holdfast failure can let the board move suddenly into a moving plane, saw or chisel path → inspect before use; test with light pressure; stop if the joint moves.
• Rotation — a long board can pivot even with its end against the hook → holdfast or clamp placement, and reset if it rotates.
• Drop — the crochet does not carry the board's weight → independent support below.
• Tool path — keep hands and torso out of where a released board, plane, saw, chisel, clamp or screw handle will travel.
• Surface damage — concentrated contact at the hook corner or holdfast can bruise work → pads or changed placement.
• Inspection — a damaged or loosely attached crochet is out of service.

No injury account for this fixture was found in Run 304. That is a research result; the controls follow from the mechanism regardless.

damaging: sawing tenons can drive the work into the hook's corner and bruise it; Schwarz reports he has not found arris-denting a problem with his wedge crochet or Roubo's square one [CR2] — both positions kept; pads or placement are the control.

beginner-trap: assuming crochet-plus-one-holdfast is automatically secure. Siemsen and commenters on Margeson's post stress holdfast placement and genuine support below the board as much as the hook's shape [CR7][CR8].

lineage-misuse: expecting the passive hook to clamp like the screw vises it is associated with.

Correct Use

Mechanics (review fix 6). A crochet primarily resists forward travel. An acute V can add lateral wedging, but the fixture does not provide the controlled, two-sided pressure of a vise and does not support the board's weight. Depending on the operation, secure the work with holdfasts or a bar clamp, and/or support it from below.

Edge planing (Schwarz). Push the board's end into the crochet to arrest forward motion; support the board from below with a peg in the bench leg or a sliding deadman; add one or more holdfasts on the bench front where the setup needs them (more for longer stock). Schwarz also describes planing setups relying on underneath support plus gravity and the force of the plane [CR2].

Joinery (dovetails, tenons). Seat the work's edge in the crochet and pin it with a holdfast, or a bar clamp across the benchtop, rather than relying on the crochet alone [CR2].

Before and during (review fix 7).

• Inspect the crochet, its bolts/nails/mortise, the bench front, the holdfast holes and the auxiliary supports before applying force. Do not use a damaged or loosely attached crochet. Movement at the crochet-to-bench joint is a stop-work condition.
• Test the setup with light pressure before a full plane stroke or joinery cut.
• Support long or heavy boards independently — the crochet is not a shelf.
• Keep hands and body out of the anticipated path of the plane, saw, chisel, workpiece, and any protruding screw handle.
• Pad or reposition where a sharp hook corner or holdfast can bruise finished arrises.
• Stop and reset if the board creeps, rotates, chatters or lifts.

✦ Matching — the workbench's first read

does: arrests a board's forward travel against the bench front; an acute V adds some lateral wedging. Provides no controlled two-sided pressure and no vertical support.

strong fit: edge planing of suitably supported boards; selected dovetail/tenon setups with verified restraint (holdfast or clamp) [CR2].

conditional fit: portable or no-vise benches where auxiliary support and clamping are available; the Whipple Hook for thin panels within its stated capacity [CR9].

weak fit: short, irregular, finished or heavy stock; work requiring controlled two-sided pressure.

not a fit: any setup in which the board's weight or the tool's reaction depends on the crochet alone.

kit-fit:

• Pairs with: the Holdfast or a bar clamp, and, for planing, a leg peg or sliding deadman below the board.
• Can replace a face vise (review fix 8) only for selected edge-planing and vertically held joinery setups, when paired with suitable restraint and support. Excluded: short stock, irregular stock, positive two-sided clamping, high-force operations, and setups lacking safe support.
• Once a bench has a Leg Vise or Shoulder Vise, builders commonly find the crochet less needed.

access (review fix 9): a traditional wooden crochet can be inexpensive and shop-made; it works best on a bench with a substantial front. Commercial and temporary crochet-like options also exist — the Whipple Hook clamps to a board edge [CR9][CR11]. A full-size traditional crochet is a bigger retrofit than a small functional one.

revival: part of the hand-tool-bench revival; the 2015 Sawmill Creek thread is evidence of revival interest at that date [CR8].

Anatomy

• Traditional material: wood — Schwarz, the Sawmill Creek thread and Oregon Woodworker describe shaped blocks of tough hardwood (oak, ash, walnut, sycamore) [CR2][CR7][CR8]. Related modern forms are metal: the Whipple Hook is steel [CR9].
• Two profile families (Schwarz): V-shaped/wedge — "you press the work into the opening and its V-shape helps hold the work"; square-opening period French — "Old French ones, as shown in l'Art du menuisier, work more like a planing stop as opposed to a wedge" [CR2].
• Opening: Schwarz's spec is "slightly larger than 2 inches" for 8/4 stock [CR2]. Whipple Hook: its vertical face can brace stock or be used like a crochet for panels up to 9/16 in. [CR9].
• Attachment: period examples often shown nailed; Schwarz uses long bolts with washers (a forum commenter reads "carriage bolts" as a slip for lag screws) [CR2][CR8]; a forum-described alternative mortises a large tenon into the benchtop, not removable [CR8].
• Height: no standard found.

Variations (living)

Trades

• Continental/French joinery (menuisier) — Roubo's illustration.
• English joinery — Nicholson-style benches [CR7]; period naming open [CR10b].
• Swedish joinery — the Vasa-associated bench, as a lead [CR5].
• Modern hand-tool woodworking — revival builds and commercial crochet-like stops [CR8][CR9].

Lineage

Ancestors. In Ingenious Mechanicks, Christopher Schwarz traces earlier notch-based holding at the bench edge in early-16th-century images (a "Sacra Famiglia" possibly by Giulio Clovio, Fondazione Querini Stampalia, Venice; Bernhard Strigel and a Martin Löffelholz codex illustration, both c. 1505, Nuremberg) — a rectangular or V notch rather than a projecting hook; Schwarz treats these as related but distinct ("the idea of wedging your work in place is as old as the wedge") [CR1].

The earliest clearly hooked example identified in Schwarz's survey is the 1607 painting La Bottega di San Giuseppe by Giovanni Barbiani, Basilica di Sant'Agata, Ravenna, where the hook is carved integral with the benchtop — construction Schwarz calls "an unlikely construction" prone to splitting [CR1]. That is the limit of one survey, not a corpus-wide first.

Screw-driven bench-front vises — an inferred relationship (review fix 2). The crochet is often interpreted as a mechanical precursor to screw-driven bench-front vises, including the Shoulder Vise:

• Moxon's joiner's bench (Mechanick Exercises, 1677/78–1680) is described by secondary writers as showing a screw driven through a bench-front cheek [CR1]; primary plate/page citation pending — see the Moxon scan route under References [CR12].
• The 1764 Hallens bench (Werkstäte der heutigen Künste), per Schwarz: its shoulder vise "hasn't quite cast off its crochet origins," the outer jaw still carrying the hook's bead [CR3].

These make the relationship mechanically plausible. They do not prove continuous or direct historical descent; the descent is an inference.

Citation note carried forward. The Shoulder Vise entry (SV6) attributes the sentence "A bench crochet pierced by a screw is likely the great-grandpappy of the shoulder vise" to Schwarz's 2022-07-26 post "The Crochet, Notches & Wedges"; that post does not contain it [CR2]. Flagged for the Shoulder Vise entry's own correction.

Contemporaries. The Planing Stop — the crochet is described as its vertical analogue: the stop arrests a board lying flat; the crochet arrests one on edge against the bench front (Schwarz; Andy Margeson) [CR2][CR7]. The Holdfast is a frequent partner (see Matching).

Patents. No patent specifically covering the traditional wooden crochet was identified in Run 304. Related but distinct patented form: Rollin P. Whipple's 1900 device, a steel fitting that creates a crochet on the bench's front edge and a planing stop on its top; Lee Valley sells a version as the Whipple Hook [CR9][CR10][CR11].

History

Depictions. Roubo's L'Art du Menuisier (1769–75) is the best-known depiction — Plate 11 per secondary sources [CR6]; primary verification route: the BnF record and Lost Art Press's high-resolution Plate 11 download [CR13][CR14]. Moxon's bench predates Roubo (see Lineage, attributed). By Schwarz's account, the crochet had mostly left professional shops by the 19th century as screw-driven face vises took over [CR1].

The Petroski reading. A bare hook resists mainly one direction of travel; getting controlled pressure meant adding a screw. The Hallens bench shows a screw vise that still carries the hook's visual trace [CR3].

An unresolved design disagreement (documented at 2015). Roubo's plate shows a wider, more open hook (secondary estimates 60–90°); the acute ~20–25° V Schwarz popularized in a 2005 Popular Woodworking article is a different geometry. A 2015 Sawmill Creek thread, "Roubo crochet design," discusses the gap: Rob Tarule's bench (Fine Woodworking, 1987; Landis's The Workbench Book) sits closer to Roubo's angle; Mike Siemsen uses 25–30° and explains the trade-off — a narrower angle suits thinner stock, a wider one accommodates a broader range but needs the board's end to clear a support peg [CR8]. No consensus in the thread; it documents revival interest at that date.

Human Side

Beyond France. Crochets or equivalents appear on English Nicholson-style benches (Andy Margeson's build, 2012) [CR7] and are reported on a Swedish joiner's bench associated with the Vasa (see Proof of Existence) [CR5].

Period terminology. Peter Follansbee's post on a 17th-century carved oak panel (the "Stent panel") and jennie alexander's comments debate whether the depicted fixture is a crochet, a "bench screw" or a "crotchet" — open [CR10b].

Named hands. Christopher Schwarz built his first crochet in 2005 on a reproduction French bench [CR1][CR2]. Rob Tarule built a Roubo-style bench with a crochet closer to Roubo's geometry [CR8]. Mike Siemsen supplies the clearest angle rationale [CR8]. Jan C. Goris built a sliding, cranking crochet in T-track along both benchtop edges: "They have a remarkably solid grip and they are very fast to use... Let the crochet ride up on the workpiece just a smidge and then crank it down" [CR4].

Claims that rested only on two sources whose URLs were never recorded (a 2014 "Crocheting" post on thequietworkshop.com and a 2013 Sawmill Creek thread "A Crochet???") are removed under review fix 11 until those pages can be cited in full.

✦ Proof of Existence

• Earliest clearly hooked example in Schwarz's survey: Barbiani, La Bottega di San Giuseppe, 1607 [CR1]. Notch-based proto-forms in earlier images [CR1].
• The Vasa — a documented follow-up lead (review fix 5). A photograph relayed by Popular Woodworking (2009) is reported to show a crochet on a joiner's bench associated with the Vasa (about 24″ high, 16″ deep, 8′ long, with holes below the hook's open part lining up with a sliding deadman) [CR5]. Institutional catalogue or curatorial confirmation was not located; no accession number was found. A DigitaltMuseum.se search returned only an unrelated 1955 toy planing bench.
• Documentary anchors: Moxon (1677/78–1680) and Roubo (1769–75) — attributed to secondary writers pending primary plate/page citations [CR12][CR13][CR14].
• Commercial: the Whipple Hook, a current steel product advertised for crochet-like use [CR9].
• Patents: no patent specifically covering the traditional wooden crochet identified in Run 304; Whipple's 1900 device is a related, distinct patented form [CR11].

References

Removed under review fix 11: the Lee Valley "crochet" search row (a false negative), and two placeholder-URL sources ("Crocheting," thequietworkshop.com, 2014; "A Crochet???," Sawmill Creek, 2013). "Workbench Curiosities at Skokloster" (no crochet found) is dropped as no longer supporting a claim.

The reviewer's corrections (12)

• BLOCKER — 1. Correct the material, market, and retrofit claims — Exact claim: “Material — always wood, never the forged iron of its companion holdfast”; “confirmed negative: no bench-crochet hardware product exists”; “no crochet hardware is sold anywhere”; and “not retrofittable onto a typical mod …
• SHOULD-FIX — 2. Qualify the claimed shoulder-vise descent — Exact claim: The crochet “stands as the direct structural ancestor of the Shoulder Vise”; “the underlying claim is independently well-supported”; and a Welsh blog commenter is “a second, independent modern voice” that “corroborates” …
• SHOULD-FIX — 3. Reframe priority claims as the limits of one survey — Exact claim: The crochet is “one of the two oldest” bench-workholding elements, and the 1607 image is “the first true hooked crochet.”
• SHOULD-FIX — 4. Cite Moxon and Roubo at the primary-object level — Exact claim: “Joseph Moxon’s joiner’s bench…already shows a crochet with a wooden screw driven through the cheek,” while Roubo Plate 11 is reported only through secondary summaries.
• SHOULD-FIX — 5. Reduce the Vasa claim to a documented follow-up lead — Exact claim: The Vasa bench is “the strongest object-level lead,” “directly-dated,” “directly-provenanced,” “museum-held,” and stronger proof than other corpus entries.
• BLOCKER — 6. Correct the workholding mechanics — Exact claim: The crochet provides “zero clamping force of its own,” works “only when paired with a Holdfast,” and the holdfast is a “near-mandatory companion” described “everywhere” as a paired system.
• BLOCKER — 7. Add actionable safety controls — Exact claim: The safety discussion says an unsecured board can walk or rotate but largely stops at “mechanically reasoned risk.”
• SHOULD-FIX — 8. Narrow the “substitutes for a face vise” match — Exact claim: “Substitutes for: a face vise on a lightweight, portable, or no-vise bench.”
• SHOULD-FIX — 9. Remove cost, availability, and community-status absolutes — Exact claim: “the cheapest possible board-holding fixture”; “DIY-only”; “not a component a beginner bolts onto an existing modern bench in an afternoon”; and a 2015 thread is “an active, ongoing debate.”
• SHOULD-FIX — 10. Replace patent-search negatives with bounded findings — Exact claim: “No patent exists for the traditional wooden crochet itself.”
• SHOULD-FIX — 11. Repair the reference table and provenance — Exact claim: Two references contain placeholders such as “URL as found this run”; the Lee Valley row records a false negative; and the provenance describes that false negative as confirmed.
• MINOR — 12. Treat the French terminology cautiously — Exact claim: “French: crochet de bois, ‘wooden hook’” and English woodworking has adopted that French term directly.