Schrupphobel (German Scrub Plane)

identity

• name: Schrupphobel ("roughing plane," German) [SH1][DGUV].
• definition (review fix 2): a coarse German roughing plane characterized principally by a strongly rounded cutter and aggressive stock removal. Traditional and many current forms use a single iron without a chipbreaker (Wolfgang Jordan: "ein Spanbrecher wird nicht benötigt" [SH1]), but current double-iron variants exist (Ulmia HW5D-33 [ULM]). Chipbreaker presence is model data, not the family boundary.
• DGUV role: Schrupphobel — leveling raw surfaces [DGUV].
• common traditional form: short wooden body, front horn, 33 mm rounded cutter, generous shaving path, wedge-and-hammer adjustment [SH1][SH12][ULM].
• related, not synonyms: Anglo-American scrub and cambered fore/jack planes; the French riflard (see lineage).

✦ How NOT to use it

dangerous — hazards and controls (review fix 1, the holding finding)

DGUV Information 209-001 (published through BG BAU) states that hand planes are hazardous because of the sharp cutter and chipbreaker, and lists sudden release of the iron, loose or defective handles, slipping off the workpiece, inadequately secured work, and falling irons during release or adjustment; it notes that hand planing demands high force, good control and adequate space [DGUV].

Controls:

• Secure and support the board so it cannot slide, tip or rock; avoid workholding that bows the board while you assess flatness [DGUV][the reviewer safety notes].
• Inspect the plane before use — do not use a loose or damaged horn, a cracked body, a defective wedge or an insecure cutter [DGUV].
• Keep the iron sharp; use only enough projection and force to stay in control. High force, an abrupt stop, or running off the far edge can cause a slip or collision [DGUV].
• Keep hands clear of the mouth and cutting edge. Install, remove, sharpen and adjust the iron on a stable surface, and anticipate that a loosened iron can fall [DGUV].
• Hammer adjustment: strike only the intended points (iron top, heel button) with light controlled taps; keep the striking hand and bystanders clear; avoid uncontrolled blows to the body or cutter. Follow the maker's instructions — excessive striking can damage the tool [SH2][SH12].
• Stable footing, suitable bench height, adequate light, and clear space through the whole stroke and run-out [DGUV].
• Inspect reclaimed stock for nails, screws, staples, wire, grit, coatings, preservatives, rot and infestation before planing; hidden metal can chip the edge and stop the stroke abruptly.
• Store and transport so the cutter cannot cut a reaching hand or be damaged; secure loose irons in transport.

Research note: no Schrupphobel-specific injury account was located. The controls above rest on DGUV's hand-plane guidance for the same wooden-plane family; no accident story is invented.

damaging

• excessive wedge force — Egon: use a tap, then check you can pull the wedge out with your fingers [SH2]. (The earlier claim that overtightening cracks the body or misaligns the iron is removed — not in the source.)
• excessive striking during adjustment can damage body or cutter (see control 5).
• removing sole material to open the mouth is irreversible and may affect bedding support, performance or warranty (see beginner-trap).

beginner-trap

• coarse shavings choking: first check that cutter, wedge and shaving path are installed and set correctly; then consult the seller or maker. Widen the mouth only with model-specific guidance and an understanding that the change is irreversible. Egon's rasped mouth is one dated report, not a standard procedure [SH2].
• expecting a feed screw — this tool sets by taps; follow the sequence under access.
• trusting the short sole for straightness — check with winding sticks and a straightedge; follow with a long plane [WC][PW].

lineage-misuse

• varlope for first-pass roughing / Schrupphobel for long truing — the varlope is a longer truing plane; the Schrupphobel removes error, it does not register long surfaces [SH5][ACAD].
• assuming the riflard is either identical to or wholly unlike a scrub — functional overlap, different proportions; check the actual plane [CNRTL][ACAD].
• assuming "jack plane" is an exact translation of Schlichthobel — approximate only [SH18][DGUV].

correct use

• job: rapid local stock removal — saw marks and high areas — and reducing cup, bow and twist during hand preparation [DGUV][SH1].
• flattening (review fix 8): a Schrupphobel can participate in flattening by selectively removing measured high spots under winding sticks, straightedges and pencil/chalk marks, rechecking frequently [WC][PW]. Its short sole and deep narrow cut do not independently certify long-range flatness or leave a reference-ready surface; follow with a Raubank, fore/jointer plane or other long reference tool as tolerances require.
• stroke and grain (review fix 14): use diagonal or cross-grain passes where they efficiently remove high areas, but read the local grain and reverse direction when the cutter begins lifting fibers; reduce projection or switch to a better-controlled plane when tearout matters. Deep narrow cuts are the intended use, not an obligation — lighter cuts suit difficult grain, control or final texture.
• after roughing — roles, not one order (review fix 7): a Schlichthobel may clean coarse scallops (light-cut cleanup [SH1-S]); a Doppelhobel (with chipbreaker) may control tearout and refine; a Raubank provides long-surface registration; a Putzhobel finishes [DGUV]. The exact sequence varies with board size, condition and desired finish. Schlichthobel has no perfect one-word English equivalent; "jack/fore" can be a functional approximation depending on setup and use [SH18].
• wide stock: useful on boards wider than a machine jointer [SP16].

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

• does: rapid local stock removal; knocks down saw marks and high areas; reduces cup/twist under winding-stick and straightedge control; works toward gauge lines during hand thicknessing; can leave an intentional rough-planed texture.
• pairs with: secure bench workholding, straightedge, winding sticks, marking gauge, pencil/chalk; then Schlichthobel/Doppelhobel and/or Raubank according to the required flatness and finish [DGUV].
• can substitute for: a dedicated Stanley-pattern scrub; a suitably cambered fore/jack in the coarse-removal stage; the local high-spot-removal part of first-face preparation where a machine jointer is unavailable or too narrow.
• machine relation (review fix 15): IF a machine jointer is unavailable or too narrow, THEN a Schrupphobel can do the selective first-face removal before final hand truing; after one face is acceptably flat, a thickness planer may make the opposite face parallel. A thickness planer is not the equivalent of first-face flattening by itself.
• cannot by itself guarantee: long-range registration, a smooth or glue-ready face, parallel thickness, or safe processing of contaminated or reclaimed stock.
• not-for (review fix 11): surfaces that must be smooth, straight, glue-ready or reference-flat at this stage — precision reference, joinery, glue and finish-system surfaces need later truing and refinement. EXCEPTION: the scallops may be retained deliberately where a rough-planed texture is the intended final finish [LN40].
• weight / fatigue (review fix 10): Ulmia publishes 0.82–0.92 kg for its 33 mm models [ULM]. Wooden planes are often marketed as lighter and less tiring (ECE/Emmerich, Lee Valley copy) [SH3][SH12]; actual fatigue depends on model mass, balance, grip, cutter set, timber, sharpness and technique. No like-for-like comparison is claimed.
• access (mandate rule — no beginner verdict; review fix 12): a simple mechanism with a learned setup. Use requires instruction in tap adjustment (advance with light iron taps, retract by tapping the heel button, align laterally with controlled taps), using only enough wedge force to hold the setting, sharpening a cambered iron, grain reading, workholding, and checking flatness with external references. Hammer-and-wedge adjustment has a learning curve for users accustomed to feed screws; it is not ranked as inherently harder.
• revival: a hand-tool-only, no-power workflow; a Continental wooden-plane tradition still sold new [SH3][SH12][ULM].

anatomy — model rows (review fixes 3, 9)

Adjustment method does not follow body material. (Check whether Ulmia's catalog "white beech" refers to the sole or the whole body before translating further — the reviewer's note.) Horn: front horn grip on the German wooden forms [SH1][SH2]. Mouth: "weit offen" per Jordan [SH1]; no measured spec.

variations (living)

• ECE scrub — Lee Valley listing $119 as fetched in the review (2026-08-03); prices change [SH12].
• Ulmia HW5-33 / HP5-33 / HW5D-33 — single-iron white-beech, single-iron lignum-vitae, double-iron white-beech [ULM].
• vintage ECE No. 106S — collector listings (title-level only) [SH19].
• metal scrubs (Stanley No. 40/40½, Lie-Nielsen, Veritas) — see Scrub Plane; adjustment varies by model [VER][LN40].

trades

• Schreinerei / Tischlerei, menuiserie — hand stock preparation [SH1][DGUV].
• hand-tool-only and off-grid shops; stock wider than a jointer [SP16].

lineage (review fixes 4, 6)

• Anglo-American scrub (Scrub Plane): German and Anglo-American roughing traditions contain closely analogous tools with strongly cambered cutters and coarse stock-removal roles. The sources consulted do not establish whether these forms arose independently, shared older antecedents, or influenced one another. The sibling entry's blogger hypothesis — that Stanley's 1896 No. 40 served immigrant Continental craftsmen — remains a labelled hypothesis and itself suggests contact, not independence [SP4].
• French riflard (Riflard): CNRTL defines it as a large plane with a convex blade, smaller than a varlope, used to dress and rough timber [CNRTL]; the Académie française defines it as a carpenter's roughing plane used before the varlope [ACAD]. It is a French convex-cutter roughing plane, generally longer and differently proportioned than a short German or Stanley-pattern scrub. "Scrub," "fore/jack" and "riflard" overlap functionally without being exact one-to-one forms. French forum exchanges show practitioners debating the English equivalence rather than settling it [SH5][SH6]; chipbreaker presence on riflards is model-level data, not a national distinction.
• varlope: a longer truing plane, the French counterpart of the jointer/try plane [SH5][SH7][ACAD]; see the corpus's Jointer Plane entry.
• powered relatives (review fix 15): a jointer establishes a flat reference face or edge by table registration; a thickness planer generally follows an existing reference face and makes the opposite face parallel — it does not reliably flatten an unsupported twisted first face [SP16].

history

• ECE (review fix 5): E.C. Emmerich, founded 1852, remains a current maker of wooden planes, now run by Hans-Joerg Emmerich, and currently sells a 33 mm Schrupphobel [ECE-A][SH3][SH12]. This demonstrates a living commercial tradition, but the present sources do not establish uninterrupted production of this exact model since 1852; ECE's own timeline records wartime destruction of its Remscheid production and administrative facility [ECE-A]. "Shape, size, blade and wedge have remained unchanged for hundreds of years" is retailer heritage copy [SH12], not a verified manufacturing history.
• German practice (attributed): Joel Moskowitz, quoted by Core77 at Holz-Handwerk: "Wooden planes never fell out of favor in Germany and even today are very popular" [SH3] — a named observation, not a quantified finding.
• Ulmia: current catalog lists HW5-33, HP5-33 and HW5D-33 (see anatomy) [ULM]. Its c.1895 "Reformhobel" history was search-synthesized only [SH4] and is not relied on.
• patents: none located in this pass; search scope was not documented, so this is not evidence that none exists.

✦ human side

• Walter Egon (Norwegian Woodworker, Substack) on an ECE Schrupphobel: an open "fingers forward" hold on the horn; "To advance the iron, just tap the protruding, upper end of it... If you want to retract the iron... give the plane some sharp knocks on the steel button on its rump"; and on the wedge: "A common mistake is to overtighten the wedge. Don't! Give it a tap and try to pull it out again with your fingers" [SH2].
• Egon's tight mouth (review fix 13 — a dated product report): his own new ECE plane arrived with a mouth "fairly tight, more like what you'd expect to find on a normal bench plane," which he widened with a rasp [SH2]. This is one unit, not a normal factory condition or an authorized setup step (see beginner-trap).
• Hans-Joerg Emmerich (attributed maker claim): wood "glides over wood much smoother than metal does... doesn't shatter when you accidentally drop it... weigh less... cause less fatigue" [SH3].
• translation debate: Blue Spruce Woodshop and a commenter argue the Schlichthobel has no exact metal-plane equivalent [SH18]; French forums debate riflard/varlope terminology live [SH5][SH6].

✦ proof of existence

• current manufacture: ECE scrub via Lee Valley [SH12]; Ulmia catalog HW5-33, HP5-33, HW5D-33 [ULM].
• company history: ECE founded 1852 [ECE-A].
• German occupational guidance naming the Schrupphobel and its role [DGUV].
• technical description: Wolfgang Jordan, holzwerken.de [SH1].
• French related form: riflard in CNRTL and Académie française [CNRTL][ACAD]; Roubo's 1782 L'Art du Layetier riflard drawing is an inherited sibling-entry citation, not re-verified [SH9].
• museum: Deutsches Werkzeugmuseum, Remscheid — search-synthesized only [SH10].

references

The reviewer's corrections (16)

• BLOCKER — 1. Replace the empty safety class — Exact claim: “Genuinely and fully empty” and “the DANGEROUS class is genuinely and fully empty.”
• BLOCKER — 2. Remove the universal single-iron/no-chipbreaker definition — Exact claim: The Schrupphobel is defined as a “single iron and no chipbreaker,” riflard's chipbreaker is the “decisive anatomical tell,” and “A true scrub, German or English, is defined structurally by the absence of a chipbreaker.”
• BLOCKER — 3. Correct the “wedge versus screw adjuster” comparison — Exact claim: Wedge-and-hammer adjustment is “the defining mechanical difference” from metal scrubs, which use a “screw adjuster”; the tool “directly substitutes” through “wedge-and-hammer vs. screw adjuster”; and the image request ca …
• SHOULD-FIX — 4. Separate similarity from proof of independent invention — Exact claim: English/American and German traditions “arrived independently” at “the identical anatomical solution,” with “two craft cultures independently converged.”
• SHOULD-FIX — 5. Bound the ECE continuity claim — Exact claim: ECE has produced wooden-bodied planes continuously since 1852, proving “a live commercial lineage,” that the Schrupphobel “simply kept being made the same way,” and that the exact practice “never fully lapsed.”
• SHOULD-FIX — 6. Rebuild the French riflard comparison — Exact claim: The riflard is “closer to a jack plane,” necessarily carries a chipbreaker, has only a gentle camber, and therefore is not a clean scrub counterpart; the entry presents this as its “lead finding.”
• SHOULD-FIX — 7. Replace the universal German tool sequence — Exact claim: “The correct sequence is: Schrupphobel → Schlichthobel → smoother,” and translating Schlichthobel as jack plane is an error because no metal-plane equivalent exists.
• BLOCKER — 8. Correct the claim that the short sole cannot flatten or true — Exact claim: The Schrupphobel “cannot replace a jointer's flatness guarantee,” and “a short sole cannot bridge and true a long surface, it follows undulations rather than removing them.”
• SHOULD-FIX — 9. Correct current Ulmia anatomy and material data — Exact claim: “European (red) beech with a hornbeam sole, on both ECE's and Ulmia's current lines,” and a single 33 mm blade on both.
• SHOULD-FIX — 10. Remove unsupported weight and fatigue comparisons — Exact claim: The tool is a “lighter-weight alternative” that causes “less mass swinging through a long roughing session,” while the open-gaps section says no Schrupphobel weight was found.
• SHOULD-FIX — 11. Fix the final-surface contradiction — Exact claim: “finish surfaces” are universally “not-for,” with no exception.
• SHOULD-FIX — 12. Reframe the wedge-access and overtightening claims — Exact claim: Wedge adjustment is “a real, sharper beginner-trap” than a screw adjuster and overtightening “risks cracking the body or misaligning the iron.”
• SHOULD-FIX — 13. Do not convert one tight-mouth anecdote into an expected fitting step — Exact claim: A factory-fresh ECE may need its mouth rasped before use, and the buyer should “recognize a fitting step is expected.”
• SHOULD-FIX — 14. Correct the grain-direction rule — Exact claim: “Working the grain rather than diagonally across it on reversing or figured stock” is a damaging misuse and causes tearout.
• SHOULD-FIX — 15. Correct the powered-tool substitutions — Exact claim: Powered jointer and thickness planer both mechanize “the same rough-to-flat job,” and the Schrupphobel substitutes for “a power jointer/planer's first rough pass.”
• SHOULD-FIX — 16. Regrade confidence and repair the image brief — Exact claim: Base/effective confidence is “MEDIUM-HIGH,” and image requests present “two traditions converging on identical anatomy” plus “screw adjuster vs. wedge.”