Tenoning Machine (Single-End - Double-End Tenoner)

Identity

Name: Tenoning machine (also "tenoner," and "tenoning-profiling machine" in the current ISO standard's own language). It forms the male (projecting) half of a mortise-and-tenon joint; the female (cavity) half is cut by the machine this corpus already built, the Powered Mortising Machine family. OSHA's eTool states the relationship: "Tenoning machines use cutter heads and/or saw blades to form projections (tenons) on pieces of stock. Each tenon can be inserted into a cavity (mortise) on another piece of wood to form a mortise and tenon joint." (OSHA, as quoted in the original run.)

Single-end vs. double-end — the defining split. A single-end tenoner processes one end or side per presentation: the work is presented to the heads by a guarded sliding table or carriage, or by a model-specific mechanical feed, past a row of stations (commonly a cut-off or squaring saw, a scoring or pre-cut head, top and bottom tenoning heads, and sometimes cope or profile heads). A double-end tenoning/profiling machine uses opposed machining stations and mechanical feed to process two opposite sides in one pass. Mereen-Johnson's current product copy (as read in the original run) states the value proposition: "A double end tenoner allows you to process both ends of a material simultaneously, doubling production output while maintaining precision and joint quality." Head count, squaring saws, scoring heads, profiling heads, feed system and CNC positioning are model-specific configurations, not universal anatomy. "Double-end tenoner" is the common shorter name for the double-end tenoning/profiling machine.

Architecture varies by model, era and market. The same word covers machines with different head arrangements. One practitioner (Joe Calhoon, WoodWeb, 2023) observed that some European tenoners "usually don't have the horizontal heads" found on older US iron; that is one practitioner's observation from a small sample of machines, and this entry treats regional prevalence of any head layout as unverified unless a representative market source supports it. Identify each model's actual heads from its manual.

One-line: A machine that holds a workpiece and presents its end or side to one or more saws and cutterheads to form a tenon or related end profile, repeatably — on a double-end machine, on two opposite sides in one pass — the mechanized relative of the hand tenon saw and shoulder plane, and the sibling half of the joint the mortiser covers.

✦ How NOT to use it — the heaviest section

Boundary first. Use only cutters, saws, spindle speeds, rotation, feed paths and procedures approved for the particular machine. Do not bypass or remove guards, reach near moving or coasting cutters, or apply forum workarounds in place of the manufacturer's inspection and service procedure. PPE does not replace guards, workholding, extraction or isolation.

NOT-FOR (jobs it should not be used for)

• Stock outside the machine's permitted dimensions or condition (warped, undersized, over-length or unstable pieces). Stock must be within the machine's window and condition.
• Any improvised cutter, arbor, bore or tooling modification (see Matching).
• A freehand or fence-only large-disc setup on a shaper.
• Using a machine whose guarding, interlocks or brakes have been defeated, or which has failed its positioning-accuracy check.

DANGEROUS (injures the operator or a bystander)

The hazards. Severe injury, including amputation, from contact with cutters or saws; entanglement and in-running nip points on automatic feeds (OSHA's tenoning eTool names "clothing, hair, or hands may be caught by and pulled into the in-running rolls of the automatic feed"); crushing and trapping by powered clamps, sliding tables, feed chains and dogs; ejection of stock, offcuts or tool fragments; flying chips; kickback; dust (a health and fire risk); and noise.

Single-end guidance and double-end requirements are not the same thing. HSE's Woodworking Information Sheet No. 39, Safe use of single-end tenoning machines, is UK guidance for single-end machines, aimed largely at older hand-fed machines (read this pass). Double-end machines add mechanical feed, in-running nips, opposed heads, bed-width adjustment, longer danger zones, and loading and unloading integration. For the wider category use ISO 19085-12:2024, the exact machine manual, the law that applies where the machine is used, and, for US workplaces, OSHA 1910.213(k).

Normal production.

• All cutter, saw, chain and sprocket, and point-of-operation guards intact, with interlocked access closed. OSHA 1910.213(k) requires that feed chains and sprockets of double-end tenoning machines be completely enclosed except the portion conveying stock; that sprockets and chains at the rear ends of frames be guarded at the sides; and that each tenoning machine have all cutting heads, and saws if used, covered by metal guards covering at least the unused part of the periphery, forming part or all of the exhaust hood where an exhaust system is used (read this pass; the metal thickness figures in the text are left to the regulation). OSHA's guide to woodworking hazards describes the same hazards and engineering controls (read this pass).
• Emergency stop locations known and unobstructed; extraction operating; workpiece within permitted size and condition; clamps, dogs, hold-downs and feed controls verified; nobody within the loading, discharge, projection, nip or ejection zones; third-party access to the sides and rear limited by barriers without creating trapping points (WIS39 recommendation, read this pass).
• Vertical table guards, saw guards and tool guards as the machine maker and WIS39 describe for older machines; retrofit guarding is available for older machines (HSE).

Workholding, clamping and crushing. Powered clamps, sliding tables, feed chains and dogs, stock projection, warped or undersized pieces, offcuts and the forces of opposed cutters can crush, trap or eject material. Require stock within permitted dimensions and condition; verified clamps, dogs and hold-downs; additional clamps when several pieces are machined together (WIS39); hands clear of clamp and table travel; guarded nip points; controlled offcuts; and no reaching into a running or coasting machine. WIS39 suggests managing the crushing risk of powered clamps by two-stage clamping, limiting gaps and closing speeds, guarding the clamp, and providing a way to release it. The draft's earlier numeric clamp thresholds are not retained because no current clause or manual for them could be read in this pass; keep numeric control requirements only with an exact current source and jurisdiction.

Setup and first-piece proving. Use only the manufacturer's defined setup mode and controls. Verify head positions, cutter rotation and speed, spacers and retention, stock envelope, clamps, feed path, stops and clearances; use reduced-speed or inching functions only where documented; never improvise a guard bypass.

Braking, run-down and isolation.

• HSE's WIS39 (UK, single-end) states unbraked machines can take roughly two to five minutes to run down, that machines should have had a braking device fitted after 5 December 2003, and that braked run-down should be under ten seconds, with a longer allowance where run-up exceeds ten seconds (read this pass). These are HSE guidance figures in their UK context, not universal machine facts; braking performance, legal applicability, machine date and retrofit duties depend on the jurisdiction and the exact machine.
• Require a documented run-down or brake test at the prescribed interval, and visual confirmation of complete stop before access. A stopped sound or elapsed time does not prove zero motion. Apply the current standard or manual for the exact machine.
• Isolate and secure energy under the applicable procedure (lockout/tagout or the jurisdictional equivalent) before guard removal, cleaning, clearing blockages, extraction checks, adjustment or tool changes, and address stored pneumatic, hydraulic or gravitational energy. Handle heavy, sharp tooling with suitable aids and gloves where appropriate. Do not use compressed air or hand brushing for cleaning; WIS39 recommends vacuum equipment rated at least dust class M.

HSE's accident pattern, in its own words. WIS39: "Severe accidents, including amputations are caused on single-end tenoning machines by the operator making contact with the cutters or saw while: checking if the local exhaust ventilation (LEV) was working, often during rundown; setting and adjustment; cleaning up or clearing blockages. In all of these accidents, the cutters were found to have been still in motion." Operators must not test airflow by reaching near moving or coasting cutters. HSE's woodworking case studies (read this pass) also describe a double-end accident during bed-width adjustment, when an employee slipped while adjusting the tenoning bed width on a double-ended machine, his hand contacted the cut-off saw at the rear of the machine, and he was severely injured. That is a setup and adjustment warning: adjust the bed width only under the machine's isolated or defined setup condition.

Maintenance. Qualified personnel, the machine and component manuals, lockout/tagout or the jurisdictional equivalent, brake and interlock testing, and documented return-to-service checks.

Other. Provide effective dust and chip extraction; account for wood-dust health and fire risk; control noise and provide hearing protection; provide eye and face protection as determined by the risk assessment; handle cutters and offcuts safely [manual, relayed for the operating-state list; the structure follows the reviewer's safety notes].

Competence. WIS39 says nobody should operate a woodworking machine until competence is shown, recommends written authorisation by a responsible person recorded in training records, and says supervisors need adequate training (read this pass).

DAMAGING (ruins the machine or the work)

A 2011 WoodWeb thread, "Troubleshooting Accuracy Problems on a Tenoner" (original run), recounts a shop spending seven months failing to get an Italian CNC window tenoner's split tooling to hold ±0.05mm across two stacked spindles against a manufacturer-stated ±0.15mm per stack, producing a visible 0.3mm gap in the finished joint counter-profile. Named mechanisms in that thread: ballscrew backlash and drive-motor overshoot on rise/fall positioning, and grease incompatibility fouling sensors. A salesman's dismissal is quoted: "the timber moves more than the tolerance of the machine." This is one shop's account. The corrective in this entry is the inspection and calibration procedure in Correct use, not the operator technique the thread contributors described. On a double-end machine, dogs that are not lined up as the setup instructions require produce mismatched-length ends across a whole run.

BEGINNER-TRAP (mistakes that look fine until they aren't)

• A digital readout showing the right number is not proof of correct position. Lost motion can hide until the joint is assembled; check by the manufacturer's calibration procedure.
• Assuming one tenoner resets as easily as another. Head layouts and changeover effort vary by model; contributor O's account that changing tenon heads on a Powermatic 2-A "would be a whole lot of fiddling I have no patience for" is one owner's experience. Read the exact model's manual.
• Treating a jig or a shaper tenoning setup as safe because it is cheaper. See Matching and Variations.

LINEAGE-MISUSE (treating it like a relative)

• Shaper as a tenoner stand-in. Named practitioners disagree. Contributor O runs both machines, roughing on the tenoner and finishing on the shaper; Calhoon reports cutting tenons in one pass on a shaper for windows and most doors, with the back-pressure caveat above. Neither is an endorsement of a setup; the controls under Matching apply.
• Tenoner as an end-matcher. The corpus's own End Matcher entry says a double-end tenoner improvised as an end-matcher for pre-cut-to-length flooring stock is workable "however the accuracy could create some problems." The two are an overlapping adjacent class, compared by profile, opposing-side accuracy, throughput and finish.
• Confusing single-end and double-end economics (reasoned, not directly sourced): buying double-end capacity, space and tooling for single-end work.
• Reading a machine's ability to produce a tenon as equivalence. Scale, presentation, axes, additional operations, tooling, finish and production integration determine the match.

Correct use (brief — the workbench holds deep operation)

Manufacturer-defined sequence, manufacturer-defined setup. Work from the machine's manual and its documented cutter rotation, feed path and station sequence. Some machines use a manufacturer-designed scoring or pre-cut head ahead of the main head to reduce breakout; follow the machine's documented rotation and feed path. Do not reverse the feed or improvise a setup of the head sequence.

Dogs and chain alignment. On a double-end machine, the manufacturer's setup instructions call for the feed-chain dogs to sit at the specified angle to the fence on both chains before a run starts (the original run reads this as a 90° requirement from MLS Machinery's trade description [manual, relayed]); misalignment shows up as mismatched-length ends across a whole run. Follow the exact machine's procedure.

Positioning accuracy and backlash. Check positioning accuracy and backlash by the manufacturer's inspection and calibration procedure. If tolerance is exceeded, remove the machine from the affected service and have the mechanism adjusted or repaired. Do not compensate for lost motion by operator technique; it can conceal wear in a positioning mechanism, and wrong head or fence position can cause a collision, poor workholding, excessive cut or ejection. If the exact manual requires approaching a setting from one direction, follow the manual.

Setup is a real cost of ownership. Joe Calhoon: "an old Iron tenoner will be less expensive to tool up but the setup and change over will be more labor intensive."

✦ Matching — the workbench's first read

does (plain matchable operations)

Forms the cheek(s) and shoulder(s) of a tenon to repeatable dimension via one or more rotating cutterheads plus a squaring or scoring saw; on a double-end machine, processes two opposite sides of a workpiece in one pass on a synchronized conveyor; can integrate coping or profiling heads for a matching profile in the same pass; on advanced and CNC models, may integrate boring, sanding, corner-rounding and blind ("jumping") cuts.

suits (projects, stages, materials)

Window and door manufacturing. Furniture-frame and chair-component production runs. Architectural millwork with true mortise-and-tenon joinery at production volume (a 2006 WoodWeb case: solid-wood M&T doors from clients who would reject dowel or cope-and-stick joinery). Match by workpiece size and orientation, one-end versus opposed-side processing, joint and profile geometry, head sequence, required shoulder and surface quality, material, batch size, setup frequency, throughput, and available guarding and workholding.

Tenoner versus End Matcher. The End Matcher cuts a tongue-and-groove edge-lock joint into flooring or paneling board ends; the tenoning machine cuts a structural mortise-and-tenon joint sized to seat into a mortise. Both are throughfeed or transfer-station machines and overlap in manufacturers (Doucet, Cantek, Northtech make both categories), and some double-end tenoning/profiling equipment overlaps with board-end profiling, so the correct choice depends on the profile, feed accuracy, tooling and production line.

kit-fit (pairs with / substitutes for / can't replace)

Pairs with: the Powered Mortising Machine family; upstream moulder, edge-profiler or defect-optimizing saw on a production line.

Substitutes (each only as a manufacturer-approved, guarded setup).

• A shaper with tenoning tooling. Compare presentation systems: a dedicated tenoner is arranged to hold and advance end grain past sequenced heads; a shaper can perform approved tenoning operations only with a suitable guarded sliding carriage or fixture and tooling. A shaper does both with-grain and cross-grain work when equipped with approved tooling, a sliding table or carriage, workholding and guards; cutting pressure depends on rotation, feed, grain, depth, cutter geometry and presentation, not on the machine name alone. Large tenoning heads require a manufacturer-approved spindle and arbor, a rated speed range, a guarded sliding table or carriage, clamps or hold-downs, adequate power and rigidity, the correct rotation and feed, and a shroud and extraction arrangement. Eligibility depends on the exact shaper and tooling manuals; do not recommend freehand feeding or an unguarded fence-only setup. Calhoon's reported back pressure when tenoning across grain on a shaper (above) is a reason these setups load the spindle and workholding hard. Uncertain setups go to the machine and tooling manufacturers or a qualified machine-tooling specialist.
• A tenoning jig or fixture on a table saw or router table — for occasional tenons, an approved guarded jig may be an economic alternative, with the training and manufacturer-permitted setup requirements stated under Variations.

Cutter bores, arbors and modification. Cutter bore, arbor, spacers, keys, rotation, maximum speed, guard, spindle power and machine approval must all match. Altering a cutter bore or adapting industrial tooling to an unapproved arbor can compromise balance, retention, rated speed, guarding and spindle load, and tool or arbor failure can eject heavy tooling at high speed. Any modification goes through the tooling and machine manufacturers or a qualified tooling specialist.

Cannot replace: a CNC beam processor for whole-timber post-and-beam joinery; genuine one-off hand-cut bespoke joinery where the hand-cut tenon is the deliverable (a reasoned parallel to the sibling entries, not independently re-sourced).

not-for (project-keyed) — economic, not mechanical

A dedicated tenoner is often uneconomic for a simple one-off unless the machine is already set, but mechanically suitable when stock, joint, tooling and guarding fit. Several named practitioners across two threads resolve small runs toward a shaper or jig; contributor C (2013 WoodWeb): "If you are going to be producing 25 plus doors every day of the same size and sticking profile, I would say go for it. Anything short of that I would recommend a shaper with sliding table." That is a practitioner's volume rule of thumb, not a mechanical limit. Do not buy double-end capacity, space and tooling for work that only justifies a single-end machine; contributor L: a double-end tenoner "could do the rails for a few hundred doors in a day, take up a lot of space, cost a lot even for a decent used one, and take twice the tooling of a single end tenoner." Keep "economically inefficient" distinct from "mechanically unsuitable." Stock must fit the machine's window of thickness, width and length; the original run did not locate one manufacturer's exact limits.

access

Not a beginner tool at the dedicated-machine level. Pricing clusters from roughly $9,850 (used, small single-end) to $48,500-$163,900+ (new or CNC double-end), as listed in the original run, in industrial-shop territory. Operators should be competent and authorized, and trained on the specific machine, its guarding, setup mode and isolation procedure (see the safety section). Substitutes on other machines are not a beginner path either; see Variations.

Pricing, as drafted and not re-checked. All figures are USD or the quoted currency from the original run, with the listing source and year, and were not re-verified in the 2026-10-16 pass. Model specifications are not interchangeable between listings.

The earlier row for a "Colombo-brand CNC unit" was removed: its manufacturer identity could not be resolved (see History).

Gap: no manufacturer-primary new-unit price was fetched for Cantek, Voorwood, Progressive Systems, Soukup, Vertongen, Somad or Weinig/Grecon; those are quote-only in the sources searched.

revival

A mixed, two-sided finding. Real small-shop ownership and affection exists (contributor O's "most unknown and underappreciated tool in the US"; a 25-year owner's "I love this machine"), and used and vintage-market activity is visible in WoodWeb threads from 2006 to 2023. A set of currently available products and some enthusiasm prove availability, not a trend; any claim of revival or growing popularity needs longitudinal sales, product, training or trade evidence this entry does not have. The trade itself disagrees about whether a dedicated tenoner is necessary at small scale, and that disagreement is kept, not smoothed over.

Anatomy

Single-end tenoner (Cantek ST152C spec sheet, original run): a 12" trim saw ahead of the tenon heads; two horizontal spiral-insert carbide tenon cutterheads (5" dia. × 6" long, 3400 RPM, 42 knives each) sizing tenons up to 6" long; two opposed coping heads (6000 RPM, independently adjustable); vertical and horizontal pneumatic clamping; a sliding table on precision "V" ways; mechanical digital-readout adjustment; five working units; net weight 1,716 lb. Specification, dated to the original run's reading; confirm against the current page and the configuration (standard versus optional heads, feed, workpiece range).

Double-end tenoner (Höchsmann WOOD TEC PEDIA and Cantek DET S-Type spec sheet, original run): a welded rectangular hollow-steel-tube bed; each machine side carries working-unit holders, cast iron preferred to reduce vibration; synchronized chain conveyors on both sides, geared together by a profiled round bar, with dogs (mechanical stops) on some chain links that the manufacturer's setup instructions require to be square to the fence; vertical threaded-spindle top-pressure rolls with a rotating rubber band holding the workpiece between feed chain and top pressure; a movable side on precision linear guideways for width setting; PLC/touchscreen control. Cantek's DET S-Type standard (original run reading): up to 8 spindles (4/side), extendable to 14 in the AB-Type; a tiltable scoring saw, a tiltable main cut-off saw, and a moulding station with a "jumping" function for non-through grooving; feed rate 16-82 fpm.

Terminology that matters. A scoring/pre-cut head and a squaring/cut-off saw are stations with different functions; do not assume every machine has every head or the same sequence. A mechanical feed may use chains, tracks, dogs, belts or rollers, and each creates its own nip and workpiece-control hazards. A jumping or timed head is a controlled machine function for non-through grooving, not an instruction for moving stock into a cutter.

Unit types named in ISO 19085-12:2024 (scope page, original run): sanding units, automatic tool changing, automatic workpiece returner, glass-bead saw, hinge-recessing unit, boring unit, a sawing unit between machine halves, foiling/coating/grooving/brushing/gluing/sealing units, dowel/tongue-inserting units, and marking/labelling units. This machine class carries far more optional tooling than a simple cutterhead-plus-fence picture implies.

Convertibility. See Lineage: the Parks patent documents tool-holder conversion between tenoning and mortising on that particular machine; modern combination machines show the idea persists.

Round-end sub-variant (original run). A single-sided round-end tenoner, in which one circular cutter rotates on an eccentric bushing around a fixed, clamped part, produces round tenons.

Variations (living)

Specifications, head counts and model names are as drafted in July 2026 from manufacturer pages and forum testimony, are configuration-specific, and were not re-checked in the 2026-10-16 fix pass. Record standard versus optional heads, feed, workpiece range and the source date before relying on any of them.

• Single-end tenoner — furniture, cabinet and window-door shop scale. Manufacturers seen in the original run: Cantek (ST152C, SET100, SW-K6 automatic round-end tenoner), Voorwood (A1517). Historic "old iron" named in forum testimony: Heian, Wadkin, Powermatic 2-A (discontinued), Panhans, Martin (whose T130NPS sliding-table shaper converts to tenoning via a bolt-on plate).
• Double-end tenoner — window, door, flooring and furniture production scale: Cantek (DET series), Voorwood, HOMAG, Progressive Systems (named sub-models by application), Weinig/Grecon, CAM-WOOD (SET-108TS-SHJC, 8 heads), Balestrini (LYNX/MD, CNC, for mitered doors), WEHO (MSK-2218A/B).
• CNC / numerically controlled single-end tenoners — Soukup Temac (330mm shaft, stacked tooling, WinCreator software, per Joe Calhoon, WoodWeb 2017), with Vertongen and Somad named as other European window-tenoning makers. Which models carry horizontal heads is a model-by-model fact, not a regional rule.
• Combination tenoner-mortiser machines — WEHO's MX12X and MSK1200 are currently marketed combination units.
• A tenoning jig or fixture on another machine — documented across Fine Woodworking, WoodWeb, Sawmill Creek, LumberJocks and Canadian Woodworking. It is an economic alternative for occasional tenons, but it still requires machine-specific training, secure workholding, correct feed direction, intact guarding, and a setup permitted by the manufacturer. Do not infer beginner suitability from the word "jig." The exposed blade or cutter, workholding, fence alignment, kickback, hand-clearance and feed-direction hazards remain.
• A shaper with a tenoning carriage or tooling — see Matching: only as a manufacturer-approved, guarded setup.

Adjacent machines that can cut tenons

These can produce tenons but are not ordinary variants of a dedicated tenoner. Match by workpiece scale, joint geometry, required operations, axes, feed architecture, production system and tooling, not by the presence of a tenon alone.

• CNC beam-processing / timber-frame machines — Hundegger (Bavaria, founded 1978, first fully automated wood-joinery machine 1981; the company claims a share of roughly 90% of this machine class, a manufacturer claim as drafted in the original run, not re-checked) and Krüsi (Switzerland). They work whole timbers across many structural joinery operations.
• Combination machining centers and linear window-and-door machining centers (e.g., Weinig Conturex) that integrate several processes.
• End matchers and flooring profilers — an overlapping adjacent class; compare required end profile, opposing-side accuracy, throughput and finish.
• Shaper or spindle-moulder setups, mortiser-tenoners, CNC joinery centers — separately matchable machine families.

Search outcome stated plainly. The original run did not confirm "Baioni" or "Wemhoner" as tenoning-machine makers in the sources searched; the lead was dropped.

Trades

Window and door manufacturing. Furniture, chair and cabinet-door production. Flooring and paneling production, where the machine sits adjacent to the End Matcher's job. Timber-frame and post-and-beam construction at the beam-processing scale, an adjacent machine class. Custom and architectural millwork and vintage-sash restoration shops, some running vintage machines, others served by approved shaper tooling or tenoning fixtures.

Lineage

Ancestors. The hand tenon saw and shoulder/rabbet planes, already documented in this corpus. The corpus's Sash Saw entry names a succession: hand-cut sash tenon joinery "[was] taken over by machine tenoning equipment (the tenoning machine, spindle moulder, and later CNC joinery machines) by the early 20th century in production window manufacturing." This entry inherits that corpus claim; internal links are for consistency, not independent evidence.

Documented patent examples (not a unique origin). This search located an 1840 Bailey mortising-machine record and an 1854 Wardwell tenoning-machine patent as early US evidence. The search did not exhaust prior art, foreign patents, trade catalogs or unpatented shop practice, so their priority and relationship to the broader machine class remain unverified.

• US 1,649, Andrew Bailey, Jefferson, Ohio, granted June 20, 1840. Google Patents titles it "Mortising and tenoning machine." On the text read this pass, the patent describes a foot-lever and balance-lever chisel mechanism, clearly a mortising operation, and does not explicitly describe tenoning. The review notes that an available archival drawing is titled "Mortising Machine" [manual, relayed]. This entry therefore does not say the machine did both jobs.
• US 11,625, Charles P. S. Wardwell, Lake Village, N.H., granted August 29, 1854, "Machine for Cutting Tenons." The patent's own stated purpose: "I dispense with the use of a separate machine for cutting the shoulders" (read this pass). It describes a carriage that moves across the machine on ways, with the statement that "the movement of the carriage is continuous until the tenon or tenons have been completed," but it does not name a power source for the carriage; this entry therefore does not call it a continuous mechanical feed machine.
• The original draft also cited an 1846 patent (US 4,876) as a later combined mortising-and-tenoning machine; that record was not re-read this pass and is not relied on.

Convertibility — what one patent documents, and what it does not. US 374,425, "Tenoning-Machine" (Lewis F. Parks, Cincinnati, Ohio, patented December 6, 1887; read this pass) describes a treadle-operated bench tenoner and states: "By removing tenoning-tool holder K and inserting a mortising chisel the machine may be used as a mortiser." Parks documents that at least one 1887 design was intended to convert between tenoning and mortising. Modern combination machines, such as WEHO's MX12X and MSK1200 (manufacturer pages, original run), show that the paired-function concept persists. This review found no evidence of direct design lineage between them; similar function is not provenance, and the Parks machine is a treadle/reciprocating design, not a throughfeed double-end tenoner.

Contemporaries. The Powered Mortising Machine family, the tenoner's sibling for the other half of the joint. The Moulder and End Matcher, both throughfeed production machinery of similar general scale; the End Matcher entry names the double-end tenoner as a workable-but-less-accurate stand-in for pre-cut-to-length end-matching (see Matching).

Related machines. CNC single-end tenoners with numeric control (Soukup Temac, named by a WoodWeb dealer/user). Linear window-and-door machining centers (e.g., the Weinig Conturex) that subsume tenoning into a larger workflow. Both are related function or adjacent machines, not documented descendants. Larger adjacent machines are covered under Adjacent machines that can cut tenons below.

History

What the record supports. Combined mortise/tenon machines and dedicated tenoning machines both appear in US patents of the mid-nineteenth century (above), within the American industrial woodworking-machinery boom this corpus documents for the Moulder and End Matcher. Patents establish that a particular configuration was documented by a particular date; they do not establish a unique origin, a single split of the machine class, or a one-way genealogy.

The inventor's stated reason (Petroski lens). Wardwell's 1854 patent states its own purpose in the inventor's words, as quoted in the original run: by combining the squaring saw, shoulder saws and tenon saws in one machine "a considerable saving in expense and labor is effected, and withal, the machine is rendered capable of doing more work in a given time, and in a perfect manner, than any other machine now in use for a similar purpose." That is the inventor's claim, not an independent finding.

Key manufacturers, historical (archive and dealer records). J.A. Fay & Egan Co. (Cincinnati, OH) — two dated, photographed machines in the VintageMachinery.org Photo Index (a collector/archive index, not a manufacturer publication): a "Single End Tenoner," circa 1905, serial no. 85812; and a "Single end Tenoner/No.2," 1920s. Greenlee Bros. (Rockford, IL) — a No. 533 Tenoner reported in working use at Weston Millwork's restoration shop, and a 1910 "Variety Woodworker" now displayed at the National Museum of Industrial History (trade press), a multi-function machine, not a dedicated tenoner. Oliver and Newman — named by WoodWeb practitioners as heavy-iron tenoner makers; neither company's own history was fetched. Powermatic — its 2-A two-spindle tenoner (no longer made) is the best-documented named historical machine in the human-side material; a unit's serial number was dated to 1960 through the VintageMachinery.org registry, as quoted in a WoodWeb thread.

Key manufacturers, current (as of the original run, not re-checked). Mereen-Johnson, Cantek, Progressive Systems, Weinig/Grecon, SCM Group (including Celaschi), Voorwood, HOMAG, CAM-WOOD, Balestrini and WEHO were confirmed as current manufacturers by manufacturer pages or corroborating practitioner testimony in the original run. Griggio S.p.A. (Cadoneghe, Italy, founded 1946, closed 2018, revived the same year as Griggio Machinery Srl) lists named tenoner models (GAT 150-4, GAT 180, GT 4S). A 2017 WoodWeb owner claimed his Griggio-badged tenoner was "made by Colombo and rebadged by Griggio"; that is unverified here. The "Colombo" tenoner-maker lead could not be corroborated (colombospa.com is a seal/gasket manufacturer unrelated to woodworking), so no Colombo-brand machine or price is listed in this entry.

Gaps stated as search results. This run did not locate a trade-press invention narrative for the tenoning machine, a DATAMP-specific tenoning-machine patent index, a NIOSH FACE report specific to a tenoning machine, or a museum holding for an early (pre-1900) dedicated single-purpose tenoner, in the sources and queries searched. Those are bounded search outcomes, not evidence that no such record exists.

Human side

These are published forum posts, trade articles and manufacturer copy by named or anonymized people. This entry reports them; none of it is a craftsperson's testimony written by Hewn.

Traditions & trades. Window and door manufacturing is the dominant context across the manufacturer and forum sources (Progressive Systems, Cantek's DET series, Soukup, Vertongen, Somad, Weinig/Grecon). Furniture, chair and cabinet-door production (WEHO markets its double-end tenoners for chairs, beds and sofas; Wardwell's 1854 patent was titled for bedstead-rail production in the original run's reading). Flooring and paneling production, where the mechanism runs adjacent to the End Matcher's job. Vintage window-sash restoration. Timber-frame construction at the beam-processing scale is an adjacent machine class (see below).

"Value of a Vintage Tenoner" (WoodWeb, 2014; search-synthesized in the original run, not re-fetched). A vintage-window restorer weighing a Powermatic 2-A tenoner at $3,000 against a shaper. Contributor O, with forty years on the same machine, bought a 2-A for $200 in 1998, retrofitted digital readouts that shortened setup times, and roughs the tenon on the tenoner (removing most of the waste) before finish-sizing on a shaper. His verdict: "That tenoner is the most unknown and underappreciated tool in the US." Contributor A disagrees about the model, not the class: "Tenoners are great machines to have... As far as the tenoners the PM 2a would be the last one on my list. They are light and get out of adjustment easily. Find a Oliver or Newman they are built like tanks." (A third contributor's account of a small-shop tooling workaround from this thread has been removed from this entry; see Fix 2 above.)

"Shaper w/ tenon tooling vs Single End Tenoner" (WoodWeb, 2023). Three named contributors (correy, David R. Sochar, Joe Calhoon, a tenoner dealer involved in Soukup sales) compare old-iron shapers and a Soukup CNC tenoner, which Calhoon calls "pretty slick for angle tenoning and slotting with length compensation built in to the controller." He reports 320mm tenon/cope discs cutting roughly 4-1/4"-deep tenons in one pass and says: "You will definitely feel back pressure going against the grain tenoning on a shaper." That is a practitioner's account of a particular setup, not an approval of the setup.

Economics, in practitioners' words. A 2006 WoodWeb thread ("Machining and Tooling for Large Tenon Production") records a shop hand-sawing 2-4" tenons on a table saw and asking for an alternative "without a $15,000 machine"; a 25-year Powermatic 2-A owner answered: "If you have been sawing tenons, you will learn to love the thing in no time... I love this machine." Other contributors argued that a shaper or jig does the job for far less money. A cutter-and-fixture alternative must still meet the safety requirements below, not just the price.

✦ Proof of existence

Primary patents, retrieved from Google Patents (US 374,425, US 1,649 and US 11,625 this pass). US 1,649 (Bailey, 1840), a mortising chisel machine on the text read. US 11,625 (Wardwell, 1854), a tenoning machine with a carriage carrying a squaring saw, shoulder saws and tenon saws, whose carriage movement the patent calls continuous but does not attribute to a named power source. US 374,425 (Parks, 1887), a treadle-operated bench tenoner with a tool holder that can be removed to insert a mortising chisel; the full patent text is currently retrievable and the convertibility sentence is quoted above. These are documented examples of configurations by date, not proof of unique origin.

Archive and collection records. VintageMachinery.org's Photo Index (a collector/archive index) lists two J.A. Fay & Egan single-end tenoners (circa 1905, serial 85812; 1920s, No. 2). Weston Millwork (a working shop) reports a Greenlee No. 533 Tenoner in use. A museum record supports the existence and provenance of the cataloged artifact (a 1910 Greenlee "Variety Woodworker," a multi-function pattern-shop machine at the National Museum of Industrial History), not its influence on later architecture. This run did not locate a museum or archival holding for an early dedicated single-purpose tenoner in the sources searched.

Manufacturer and dealer evidence. Mereen-Johnson, SCM/Celaschi and the named European CNC brands were seen as active current manufacturers in the original run; dealer pricing is in Matching, dated as drafted.

Standards. ISO 19085-12:2024, Woodworking machines — Safety — Part 12: Tenoning-profiling machines (catalogue scope page, read this pass). It covers specified machine types within stated scope limits: single-end tenoning machines with manual-feed or mechanical-feed sliding tables, single-end tenoning-profiling machines with mechanical feed, double-end tenoning-profiling machines with mechanical feed (which may be loaded or unloaded automatically), and angular systems for tenoning and profiling with mechanical feed, capable of continuous production use. The scope's workpiece-height boundaries are 200 mm for covered single-end machines and 500 mm for covered double-end machines. Machines outside those boundaries require separate standards or safety analysis; the figures are not universal capacity maxima and not a design rule for every machine on the market. The scope excludes, among other things, automatic loading and unloading systems serving a single machine (except an automatic workpiece returner), a single machine used as part of a production line with other machines, tools protruding outside the integral enclosure, and machines made before the standard's publication. Also relevant, per the reviewer [manual, relayed]: older EN standards for single-end tenoners are superseded by this part; this pass did not read them.

References

Claim-to-source ledger

The reviewer's corrections (20)

• BLOCKER — 1. Remove “beginner-accessible” from the table-saw/router alternative — Exact claim: A tenoning jig on a table saw or router is a “beginner-accessible substitute.”
• BLOCKER — 2. Remove the modified-tooling/table-saw-arbor anecdote — Exact claim: The entry presents a DIY account of opening a cutter bore and adapting moulder/tenoning discs to a table-saw arbor as useful practical evidence.
• BLOCKER — 3. Rebuild the shaper-tenoning alternative around approved equipment — Exact claim: A shaper with large tenoning discs is presented mainly as an “intermediate-skill” substitute.
• BLOCKER — 4. Remove the forum-derived backlash workaround — Exact claim: Operators can manage backlash by overshooting a setting and approaching it from one direction.
• BLOCKER — 5. Do not generalize “climb cut, then cut proper” — Exact claim: A scoring head is described as using the same “climb-cut-then-cut-proper” logic, followed by broader operational framing.
• BLOCKER — 6. Correct the single-end/double-end identity sentence — Exact claim: “a double-end tenoner is ... basically a double end tenoner with only one side of the machine.”
• BLOCKER — 7. Correct the ISO 19085-12 capacity claim — Exact claim: ISO's 200 mm and 500 mm figures are “hard maximum workpiece-height limits” and a design constraint on tenoners.
• SHOULD-FIX — 8. Separate single-end guidance from double-end requirements — Exact claim: HSE WIS39 is used as if it were a general operating standard for the whole single-end/double-end category.
• BLOCKER — 9. Add the missing primary guarding and feed controls — Exact claim: The safety section discusses severe injuries and braking but does not clearly state the required cutter/saw and feed-chain controls.
• BLOCKER — 10. Add clamping, crushing, ejection, and workpiece-control hazards — Exact claim: Workholding is described mechanically, but clamp and presentation hazards are not carried through as safety controls.
• SHOULD-FIX — 11. Qualify braking and run-down claims — Exact claim: An unbraked head takes two to five minutes to stop and UK machines have required stopping in under ten seconds since a named date.
• SHOULD-FIX — 12. Reframe the patent history as documented examples, not unique origins — Exact claim: Bailey is the “fused origin,” Wardwell is the “documented split point” or founding dedicated-tenoner patent, and the class evolved in one direction from combination machine to dedicated tenoner.
• SHOULD-FIX — 13. Narrow the Parks-to-WEHO continuity claim — Exact claim: Parks's 1887 convertibility and a current WEHO combination machine demonstrate “genuine mechanical continuity, not coincidence” 138 years later.
• SHOULD-FIX — 14. Remove architecture and market generalizations from thin evidence — Exact claim: European tenoners “usually don't have horizontal heads,” and current architecture is divided along broad regional lines.
• SHOULD-FIX — 15. Separate CNC beam processors and combination centers from the core class — Exact claim: Hundegger/Krüsi beam processors and multi-operation mortise-and-tenon centers are presented as variations or descendants of the tenoning machine.
• SHOULD-FIX — 16. Replace categorical “not-for” rules with conditional matching — Exact claim: The machine is “explicitly not for a single one-off furniture tenon” and not for flooring tongue-and-groove/end matching.
• SHOULD-FIX — 17. Correct the shaper comparison — Exact claim: A shaper is “normally tuned for rip-direction cuts,” unlike a tenoner's cross-grain work.
• SHOULD-FIX — 18. Reconcile manufacturer identities and specifications — Exact claim: The entry says the Griggio/Colombo manufacturer identity is unresolved, then lists a “Colombo-brand CNC” machine and price as if confirmed.
• SHOULD-FIX — 19. Correct provenance labels and negative-search claims — Exact claim: VintageMachinery photo indexes are described as manufacturer-primary, while non-findings in NIOSH, museum, and DATAMP searches are used as evidence about the category.
• SHOULD-FIX — 20. Lower overall confidence and distinguish claim-level confidence — Exact claim: Overall confidence is “MEDIUM-HIGH.”