Benchtop Thickness Planer

identity

Name: Thickness planer (benchtop or portable class: trade slang "lunchbox planer"). British usage: thicknesser. "Surface planer" is ambiguous across regions and in some places means a jointer, so this entry avoids it. The one peer-reviewed injury study cited below surveyed "jointer-planers" as a single category. Not the handheld Power Hand Planer.
Family / category: Planing/surfacing tools. The machine descendant of the hand plane's thicknessing job and the usual partner of the Power Jointer in power milling.
One line: A powered feed-through machine that pulls a board under a spinning cutterhead using powered rollers, referencing the board's lower face against a flat bed, so the cut makes the upper face parallel to the lower one at a set thickness.

✦ how NOT to use it

dangerous (injures the operator) (rebuilt per review fixes 2, 3, 4, 5, 20, 21, 22; this is the holding section)

Primary source is the DW735 manual [manual, relayed]. Read the exact planer's own manual first. Where the manual conflicts with itself, ask the maker; the more restrictive instruction applies meanwhile.

Hazards that are present at the same time (review fix 4). None ranks above the others:

• The cutterhead. It is enclosed, which reduces ordinary exposure, but it is not safe to approach. DeWalt warns users to keep arms, hands and fingers away from the cutterhead, the underside of the carriage, the chip exhaust opening and the feed rolls, and says hands can be drawn into the knives.
• In-running feed rolls. OSHA 29 CFR 1910.213(n) requires, for workplace planing machines, that cutting heads be covered by a metal guard and that feed rolls be guarded by a hood or suitable guard to prevent the operator's hands from contacting the in-running rolls at any point [T16, text seen in a search excerpt]. This is an occupational rule and does not replace the maker's instructions, but it shows exposed feed-roll nip points are a recognized hazard and not an ordinary condition.
• Workpiece ejection and kickback. Short, thin, narrow, warped or defective stock can lose grip and be thrown at high speed. Stay out of line with the workpiece; never feed from the outfeed end; never stand where stock could be driven at you.
• The chip stream. Chips leave the exhaust at high velocity. Keep hands and face clear of the ejection stream.

Operating baseline (the reviewer's Safety Notes, DW735):

• Instruction. Read the manual; obtain instruction from a qualified person if unfamiliar with the machine.
• Protection. Certified eye and hearing protection; suitable respiratory protection and ventilation for the material and exposure.
• Carrying (review fix 5). Benchtop planers are relocatable compared with floor machines; "portable" means job-site and bench use, not safe solo lifting. For the DW735 the manual recommends two people carry it, by the designated handles, or serious injury could result [manual, relayed; the wording "it is recommended that two people carry this machine or serious injury could result" also seen in a search excerpt of the manual]. Secure the planer to a level supporting surface before use.
• Outfeed clearance. Provide clear outfeed space so work cannot bind against a wall or object; do not stand between outfeed stock and a stationary obstruction. Support long or wide stock level through the whole feed path.
• Guards and port. Keep all guards, shroud, fan housing, top cover and the dust-ejection port installed and locked before operation. Use only the accessories the maker recommends.
• Dust collection (review fix 20). Use dust collection suited to a high chip volume plus airborne dust, with the port attached as the manual directs. DeWalt says it does not recommend connecting a typical shop vacuum to the DW735, because most vacs lack the capacity for the chip volume and the hose may clog [manual, relayed; also seen in a search excerpt of the manual]. A clogged or open ejection path is itself a hazard.
• Stock inspection. Plane only clean, bare wood free of foreign objects: no nails, staples, screws, grit or stone, and no loose knots or severe warp. DeWalt warns about dust from chemically treated material. Reclaimed lumber (review fix 19): clean, bare, known wood is the default. A metal detector is one inspection layer and does not clear stock of every nail, staple, screw, stone or buried grit, and cannot detect lead paint or treated-wood chemicals. Exclude coated, treated, contaminated or uncertain reclaimed stock until the hazards are identified and the machine's guidance permits it.
• Start. Start with no stock under the carriage and wait for full speed. Never change feed speed while stock is being planed.
• Jam or clog (review fix 21). Switch off. Disconnect power. Wait for complete stop. Then use the manual's carriage-release and cleaning method (for twisted stock on the DW735 the manual has you raise the carriage to release it). Never push, pull, reach into or clear live machinery, and never push a stalled board through. The exact manual wording for the release step was not reachable this pass.
• Service. Disconnect power before adjustment, accessory work, knife changes, cleaning or maintenance. Use the provided magnetic tool or scrap method for knife handling and cutterhead rotation, not fingers.
• Overload. Before resetting an overload, switch off, let the machine cool as directed, inspect knife condition, and prevent unexpected restart.
• Helical heads. DeWalt does not recommend helical cutterheads for this model (see lineage).
• Reading note. The manual's own internal conflict on minimum thickness (1/8 inch specification versus 1/2 inch safety rule) must be resolved with DeWalt; use 1/2 inch meanwhile.

not-for

• Flattening warped stock by an ordinary pass; see correct use.
• Any piece below a stated length, width or thickness limit, with or without a sled, unless the planer maker expressly approves the carrier and method.
• End-grain assemblies without explicit approval; see matching.
• Edge-jointing, squaring, tapering without a dedicated approved jig: no fence exists.

damaging (ruins the tool or the work)

• Snipe (review fixes 11, 12, 13, 17). A deeper cut near the ends of a board. DeWalt defines snipe through unsupported ends: "a depression made when an unsupported end of your material drops toward the floor", and says to support long stock level and receive it at the outfeed [T4, quoted in the original pass]. The DW735's automatic post device to minimize carriage movement is the manufacturer's stated measure [manual, relayed]. A separate practitioner hypothesis, from one forum poster, is that the floating carriage tilts when only one roller is engaged [T5]; it is a possible contributor, not an established universal cause. Snipe length and severity depend on roller spacing, support, setup, stock and machine, so measure your own machine's snipe on test stock and leave adequate trimming allowance; no fixed waste length is stated here. Practitioner-reported mitigations (attributed, candidates only): raised infeed/outfeed wings (the dime method), butting boards end to end, cutting stock long and trimming. For table geometry follow the exact accessory and alignment instructions.
• Tearout on figured or reversing grain. Counter with correct grain orientation, sharp knives, speed 1 on the DW735, light cuts, and an alternative process for difficult figure [T4][T10]. (The first-pass "damp-wiping" tip is removed: no authoritative source supports it, the manual stresses dry conditions, and added moisture changes wood behavior and can bring corrosion or residue; review fix 7.)
• Exceeding depth of cut for the width: stalls, burns, kickback, poor feed, breaker trips, worse snipe [T4][T5].
• Nicked knives: one hard particle leaves a ridge on every later board until knives are rotated or replaced [T4].
• Surface quality (review fix 16). Cutter scallops and knife marks are quality variables that depend on knife sharpness, feed rate, grain and machine calibration. Inspect the surface and prepare it for the project and glue; do not assume a universal extra finishing step, and do not assume any surface is automatically glue-ready.

beginner-trap

• The flatness assumption is a major quality trap: a planed cupped or bowed board has two smooth faces and may still not be flat. It is not the only or the primary beginner risk; see dangerous.
• Cutting parts to final length before planing: snipe appears and can ruin finished lengths. Test your machine, then plan allowance.
• A heavy last pass: take the lightest pass last.
• Ignoring grain direction because the machine feeds itself [T10].
• Treating "portable" as "one person can lift it."
• Reaching into the throat or exhaust "just for a second."

lineage-misuse

• Treating the planer like the jointer it is paired with: expecting it to establish flatness [T7][T8].
• Treating it like the hand plane whose job it inherited: see surface quality above.
• Treating it as a drum sander: see lineage; the two have different limits.
• Treating a benchtop machine like a stationary one: capacities, depth limits and mounting needs are model-specific; compare measured designs.

correct use

What it is good at: bringing stock to a repeatable thickness and making the second face parallel to a suitable reference face; dressing rough-sawn stock that already has a reference face; and model-approved light surfacing [T4][T7][T8].

Reference face first. An ordinary pass does not reliably establish a flat reference face, and it commonly reproduces bow: the rollers press the board down, the cutter removes material, and the bow can spring back (review fix 8). Joint or hand-plane one face first, or use a fixture only where the planer maker approves that carrier and method. Warp has different modes:

• Bow: the likely case to be reproduced by an ordinary pass.
• Cup and slight twist: the DW735 manual describes limited, model-specific procedures (alternating faces for slight twist; ripping cupped stock or removing enough material to establish faces) [manual, relayed]. Treat these as stock-dependent methods that do not promise flattening, and read the manual's wording before relying on them.

A commonly taught milling sequence (review fix 10, unverified against the cited source). Joint one face; joint one edge square to it; plane the opposite face parallel; rip to width; crosscut to final length. Rough crosscutting to manageable length can come earlier, and workflow varies with stock and machines. The Fine Woodworking article "How to Mill Lumber" [T9] is the cited curriculum, not re-opened this pass, so the order here is not quoted from it.

Depth of cut, always with its width condition (review fix 6). On the DW735, the maximum depth of cut is 1/8 inch (3 mm) only on material 6 inches (152 mm) wide or less [manual, relayed; the 6 inch condition also seen in a manual-derived search excerpt]. Wider stock calls for shallower cuts according to the manual's material-removal gauge and table; the table values were not verified this pass and none are stated here. Do not use 1/8 inch as a class-wide limit. Terminology: "depth of cut" is the cut per pass; "planing height" is the finished thickness the machine accepts. The first-pass entry blurred these.

Minimum stock, and the manual's internal conflict (review fix 2). The DW735 specifications list a minimum planing height of 1/8 inch, but its supplemental safety rules say never plane material thinner than 1/2 inch [manual, relayed; the 1/8 inch specification also seen in a search excerpt; the 1/2 inch rule is as quoted by the reviewer and was not re-read]. The manual does not resolve this. Default to the more restrictive instruction (1/2 inch) until DeWalt clarifies. The minimum length is 12 inches (304.8 mm) [T4]. No sled, backer or carrier is recommended here for stock below any stated limit unless the planer maker expressly approves that particular carrier and method.

Speed and grain. On the DW735, feed speed 1 (179 cuts per inch) gives a better finish and reduces knife wear and tearout in hard or figured wood [manual, relayed, as the reviewer preserves]. Use correct grain orientation where the board allows, sharp knives, light cuts for the width, and an alternative process (hand plane, scraper, drum sander within its own limits) for difficult figure. Change feed speed only as the manual directs and never while stock is being planed.

✦ matching

does (matchable operations): brings stock to a repeatable thickness; makes the second face parallel to a flat reference face; dresses rough-sawn stock (given a reference face); removes mill marks from surfaced stock, all within the exact machine's limits [T4][T7]. Does NOT: reliably flatten bowed stock; edge-joint or square edges; cut to width or length [T7][T8].

suits (match when all hold, the reviewer's matching notes):

• Material is clean, bare, known wood within the machine's length, width, thickness and depth limits.
• One face already gives a suitable reference, or an expressly approved, stable fixture provides it.
• The task is repeatable thicknessing, parallel-face production, rough-sawn lumber dressing or approved light surfacing.
• Infeed and outfeed support, dust collection, power capacity, guarding and operator clearance are in place.

kit-fit: Pairs with the Power Jointer as the common power-milling pair (a hand-flattened face can stand in for the jointer) [T7][T8]. Pairs with a planer sled or carrier only as the specific planer maker permits; the sled idea is widely described in trade sources but none was fetched, and it does not override a machine's stated limits (named sourcing gap). Substitutes for hand scrub-and-try-plane thicknessing. Can be replaced or complemented by a hand plane (reference face), a jointer (reference face), or a Drum Sander for fine sizing within that sander's own limits.

not-for (project-keyed):

• Establishing a reference face on warped stock by an ordinary pass; use a jointer, hand plane or an approved reference carrier first.
• Stock shorter, narrower or thinner than the model's stated limits; see correct use.
• End-grain assemblies (e.g., end-grain cutting boards): do not plane them unless both the planer maker and the workpiece maker explicitly approve the operation (review fix 22). The danger is widely reported by practitioners; this entry did not find a manufacturer document stating the mechanism or a universal prohibition, and does not assert one. Solid end grain, glued assemblies and fixtured work are different conditions; treat glued assemblies by glue cure, construction, size and grain orientation, and by the machine's guidance, not as generic boards.
• Reclaimed, painted, coated, treated, contaminated or uncertain stock (see dangerous).
• Severely warped stock, stock with loose knots, or stock with embedded foreign objects [T4].

access (review fix 3): supervised beginner-usable, after instruction. The DW735 manual requires the user to read it and, if unfamiliar with the machine, obtain instruction from a qualified person [manual, relayed]. It is not a "first-day, three rules" machine. Flatness is a major quality trap for beginners, not the only or the primary risk.

revival: benchtop milling can make rough-sawn lumber practical for small shops, subject to machine capacity, handling, drying, defects, availability and local economics. Any price comparison must be dated and sourced; none is carried here (review fix 26).

anatomy

• Bed (base/table): the flat reference surface the board's lower face rides on [T4][T7].
• Infeed and outfeed tables/wings: extensions on benchtop machines. Raising them slightly above level is a practitioner practice for snipe; follow the exact accessory and machine alignment instructions (for the DW735, the DW7351 table-accessory manual, not consulted this pass) [T5].
• Feed rollers (infeed and outfeed): powered rollers that grip and pull the board. Roller spacing sets the practical minimum length; the DW735 minimum is "12 inches (304.8 mm)" [manual, relayed] [T4].
• Cutterhead: DW735, three straight knives at 10,000 RPM no-load [T4]. The knives are the designed wear part, a fact the Supreme Court recognized in 1850 [T3].
• Head carriage and posts: the assembly that rises and falls on four threaded posts to set thickness. The DW735 has an automatic device in the posts that minimizes carriage movement during the cut; there is no manual carriage lock for the operator to engage [manual, relayed]. Other machines may differ; read their manuals.
• Depth crank, depth stop, material-removal gauge: the thickness controls. Depth of cut on the DW735 depends on stock width (see correct use).
• Chip ejection: on the DW735, a blower-assisted exhaust port. The manual's hand-safety warning names it with the cutterhead and rollers: "Keep arms, hands, and fingers away from the cutterhead, the chip exhaust opening, and the feed rollers to prevent severe cuts" [T4, quoted in the original pass].

variations (living)

• Benchtop/portable planers: roughly 12 to 13 inch class, universal motor; DW735 and peers. Specifications, limits and carry weight are model-specific.
• Stationary shop planers: larger, cast-iron, induction motor in typical examples, but configurations vary. Compare by verified features and capacities. Snipe performance is model and setup specific (review fix 18).
• Industrial planers and moulders: the Woodworth lineage's direct continuation, fused with a separate 1860s and 70s moulding-machine line (per that entry).
• Factory helical or spiral-head planers: see lineage; kept separate from aftermarket conversions.
• Combination jointer-planers: see Power Jointer.

trades

• Furniture-making and cabinetry: thicknessing step of milling from rough stock [T9].
• Flooring and millwork: the founding trade of the Woodworth machine [T1][T2].
• Small-shop and garage woodworking: the benchtop class's home [T13][T15].
• Reclaimed-lumber work: only with clean, bare, known stock, per dangerous.

lineage

Ancestors

• The hand plane's thicknessing job. Before machinery, a board was brought to thickness with scrub and try planes to gauge lines. The machine mechanized the job; the geometry changed (the work moves, the cutter spins in place).
• William Woodworth's planing machine, patented 1828. The direct machine ancestor (see history). Per the Yale article read in the original pass, it planed boards smooth and uniformly thick and cut tongues and grooves [T1].
• The industrial planing mill and the stationary shop planer. Stationary planers (Oliver, Yates-American, Crescent, later Powermatic, Delta, Grizzly) descend from mill plant [T7a]. Configurations vary widely; do not assume every stationary planer is a 15 to 20 inch induction-motor machine with serrated rollers.

Contemporaries

• The Power Jointer. The usual partner. Stated in ordinary-function terms: the jointer establishes a flat face and a straight edge; the planer efficiently makes a second face parallel at a target thickness. They are a common power-milling pair, not an inseparable requirement. A jointer can remove thickness but does not reliably give parallel faces at a target thickness. A planer can work from a hand-planed face or from a manufacturer-approved carrier. Either tool can be useful alone in a mixed hand and power workflow [T7][T8].
• The Drum Sander. Same feed-through, thickness-from-below architecture, abrasive instead of knives. Drum sanders generally take finer, slower passes and can suit difficult grain or final sizing. They have their own minimum sizes, carrier rules, heat and dust issues, and do not automatically accept stock that a planer rejects. Check that sander's manual.
• The combination jointer-planer, documented in Power Jointer [T7a].

Descendants / the modern branch

• The benchtop class. Portable planers moved thicknessing into small shops. The Ryobi AP-10 (10 inch) is a documented early portable example only to the extent that its owner's manual survives; no dated catalog or manual was located, so no launch year or "first" claim is made [T13].
• The DW735 as a worked model. Per its manual [manual, relayed] and the DeWalt product page: 13 inch width, 15 A motor, three knives, 10,000 RPM no-load cutterhead speed, two feed speeds giving 96 or 179 cuts per inch [T4][T4b]. Feed rates quoted in the original pass: 14 and 26 feet per minute. No claim is made that it is the class leader; that was a practitioner impression with no market data.
• Cutterhead types, kept separate (review fix 14). Geometry differs and terms are used inconsistently across the market:
  • Straight-knife heads. Long knives across the head; the DW735 factory head is this type (three knives, double-edged disposable per the original pass).
  • Spiral / indexable-insert heads. Many small inserts arranged around the head. Insert shape, edge count (not every insert has four usable edges), diameter and angle vary by maker.
  • True helical / shear-cut heads. Cutting edges set at a shear angle to the work. Names "helical" and "spiral" are often used loosely for both of the above, so check the actual geometry and the maker's specification.
  • Noise, finish, motor load, insert count and edge count are model-specific; this entry makes no class-wide performance claim.
• Factory helical-head planers versus aftermarket conversions (review fix 1). Some planers are designed and sold with a helical or spiral head. That is different from fitting a third-party head to a planer designed for straight knives. For the DW735, DeWalt's manual says helical cutterheads have not been tested with the product and are not recommended, and warns that untested accessories can be hazardous [manual, relayed; the "have not been tested" wording also seen in a search excerpt of the manual]. This entry does not recommend a retrofit to the DW735. Aftermarket heads exist for it, and a user who still considers one would need to: follow that head maker's own instructions, accept that this conflicts with the planer maker's instruction (and likely its warranty), and have a competent person evaluate the result (electrical load, chip ejection, guarding, mechanical reliability). The manufacturer's instruction wins here.

history

The Woodworth monopoly, from a scholarly source read directly in the original pass [T1]. William Woodworth, a Hudson, New York carpenter, patented his cylinder-head planing machine in 1828. He granted a half share to congressman James Strong; the two sold territorial assignments. Woodworth died in 1839, and control passed to a syndicate led by early assignee James G. Wilson, which, in the article's words, "established a network of assignees that functioned as an interregional cartel, setting the price of boards planed on Woodworth-type machines" [T1]. The patent was extended administratively in 1842 and by Congress in 1845, and expired in 1856. The syndicate brought hundreds of infringement suits. In 1853 Justice McLean wrote, as a contemporary judicial remark and not a measured ranking: "No patent, it is believed, which has ever been granted in this country, has been so much litigated as this one" [T1]. A hostile 1852 congressional committee estimated about $9 million a year in lumber sales fell under the scheme, with roughly $2 million a year to the owners; these are the article's qualified estimates, not audited figures [T1]. Wikipedia's "$15 million annually in royalties" conflicts with that and is not carried as fact [T2].

The patent record (review fix 24). The 1828 grant is the pre-1836 patent X5,315, issued 27 December 1828 to William Woodworth of Hudson, NY (the "X" marks patents from before the 1836 Patent Office fire renumbering); it was reissued as Reissue 71 on 8 July 1845, after Woodworth's death, with his son William W. Woodworth as administrator. The reissue includes a hold-down roll not in the original. These details come from the DATAMP database listings as shown in search results this pass [T17][T17b]; the patent images and specifications were not opened. US80A is a separate 1836 Woodworth patent and must not be substituted for the 1828 grant [T18]. Woodworth v. Wilson, 45 U.S. 712 (1846), records the 27 December 1828 grant and the operations covered (planing, tonguing, grooving, moulding, width and thickness) [T3b]. Two further cases in the same litigation (Wilson v. Rousseau, Brooks v. Fiske) were located and not read.

Wilson v. Simpson, 50 U.S. 109 (1850) (review fix 23). The Court's record, read in the original pass, states the machine's "cutting knives will wear out and must be replaced at least every sixty or ninety days" [T3]. It held that replacing worn knives was repair during the patent term, not reconstruction of the patented machine. Read correctly: the case documents and legally recognizes the replaceable-wear-part design that Woodworth machines already had. It did not create the idea. Modern disposable knives and indexable inserts are analogous later implementations of the same design fact, not descendants produced by the ruling.

The benchtop turn. For most of its history the thickness planer was mill plant, then heavy cast-iron shop equipment. The portable class compressed the architecture (bed, feed rollers, cutterhead carriage on posts, universal motor) into a machine that can be moved between jobs. Lighter machines can be more sensitive to mounting, support and structure; whether a given design snipes more is a matter of measured comparison, not a law of the class (review fixes 17, 18).

✦ human side

A long-time owner still managing snipe. A Sawmill Creek thread "DW735 snipe," started 20 February 2025 by Brian Runau ("Having trouble eliminating snipe. Had one of these for 20 years, but for some reason.....") is practitioner evidence [T5]. It verifies what these posters said, not the machine's internal mechanism and not the general effectiveness of their advice (review fix 27). Jimmy Harris proposes that the floating top lifts and tilts when only one roller is engaged. Steve Demuth reports the DW735's anti-backlash twin-nut mechanism, properly preloaded with raised tables, gave "essentially zero snipe" for him. Christian Hawkshaw describes the "dime method"; glenn bradley and Cary Falk describe raised wings and butting boards end to end; Ron Citerone and Cary Falk describe waxed beds. These are candidate mitigations, to be checked against the manufacturer's setup instructions.

The people in the monopoly story. William Woodworth; his son William W. Woodworth, who secured the 1842 extension [T2]; James Strong; James G. Wilson; Justice McLean [T1][T2]. The 1861 change to fixed 17-year patent terms is, per Wikipedia, partly this episode's legacy: relayed, medium confidence [T2].

The injury record. Becker, Trinkaus and Buckley (1996), 283 amateur and professional woodworkers, found "jointer-planers" carried the study's highest tool-specific injury rate, 4.9 injuries per 1,000 person-hours [T6]. The study does not isolate the thickness planer. Read it as a warning that this machine category is not low-risk, not as a planer-specific rate (review fix 3).

✦ proof of existence

1828 patent: X5,315, 27 December 1828, William Woodworth, Hudson NY, "Planer-matcher"; Reissue 71, 8 July 1845; separate 1836 patent US80A [T17][T17b][T18]. Backed by the Yale article [T1] and Woodworth v. Wilson [T3b]. Specification images were not opened this pass.
Wilson v. Simpson, 50 U.S. 109 (1850) [T3].
Manufacturer record: DeWalt DW735 instruction manual N486408 [T4] and the DW735X product page [T4b].
Regulatory record: OSHA 29 CFR 1910.213(n) [T16] and the OSHA sawmill planer eTool [T16b].
Museum/archival holding: none located.

references

Access note: in this fix pass the web fetch tool was blocked for dewalt.com, assets.dewalt.com, osha.gov, datamp.org, justia.com, yalelawjournal.org and others. "Read in original pass" means the 2026-07-10 first pass fetched it; "search excerpt" means only a search-result summary was seen this pass.

[T1] Christopher Beauchamp, "The First Patent Litigation Explosion," Yale Law Journal, Vol. 125 (2016), https://yalelawjournal.org/article/the-first-patent-litigation-explosion | scholarly (read in original pass; the reviewer confirms it supports the 1828 to 1856 duration, two extensions, cartel, hundreds of suits, McLean quote, qualified congressional estimates)

[T2] "William Woodworth (inventor)," Wikipedia, https://en.wikipedia.org/wiki/William_Woodworth_(inventor) | encyclopedia, medium (dates and extensions; its $15 million royalties figure is not carried)

[T3] Wilson v. Simpson, 50 U.S. 109 (1850), https://supreme.justia.com/cases/federal/us/50/109/ | court record (read in original pass; the reviewer confirms)

[T3b] Woodworth v. Wilson, 45 U.S. 712 (1846), https://supreme.justia.com/cases/federal/us/45/712/ | court record (the review cites it for the 27 December 1828 grant and covered operations; not opened this pass)

[T4] DeWalt DW735 Instruction Manual, N486408, current version https://www.dewalt.com/GLOBALBOM/QU/DW735/1/Instruction_Manual/EN/N486408_DW735_NA.pdf (an earlier copy was cited at https://assets.dewalt.com/GLOBALBOM/QU/DW735/12/Instruction_Manual/EN/N486408_DW735_NA.pdf) | manufacturer primary (read directly in original pass; not reachable this pass; the helical, two-person, shop-vac, 1/8 inch for 6 inch width, and 1/8 inch minimum planing height statements were also seen in search excerpts of the manual text; the 1/2 inch safety rule, width-depth table values, twist/cup procedures and jam-release wording are as relayed by the reviewer and not re-read)

[T4b] DeWalt DW735X product page, https://www.dewalt.com/en-us/product/dw735x/13-3-knife-two-speed-thickness-planer | manufacturer (cited by the reviewer for 13 inch, three-knife, two-speed, 96/179 CPI; not opened this pass)

[T5] "DW735 snipe," Sawmill Creek, started by Brian Runau, 20 Feb 2025, https://sawmillcreek.org/threads/dw735-snipe.311985/ | forum, practitioner evidence (read in original pass); verifies what posters said, not the mechanism

[T6] Becker TM, Trinkaus KM, Buckley DI, "Tool-Related Injuries Among Amateur and Professional Woodworkers," J Occup Environ Med 38(10):1032-1035 (1996), PMID 8899580, https://pubmed.ncbi.nlm.nih.gov/8899580/ | peer-reviewed (abstract not retrievable this pass; figure as relayed in the review and the first pass; jointer-planers combined)

[T7] "Jointer vs Planer: What Jointers and Planers Do and Why You Need Both," Woodcraft; "Thickness Planer vs. Jointer," Wurth Baer Machinery | trade (relayed via Power Jointer; used for the ordinary division of labor, not for "needs both")

[T7a] Jeff McVey, "Early History of The Oliver Machinery Company" (2004), VintageMachinery.org | specialist (relayed via Power Jointer)

[T8] "Which Comes First: Planer or Jointer?", The Wood Whisperer, https://thewoodwhisperer.com/articles/which-comes-first-planer-or-jointer/ | trade (relayed)

[T9] "How to Mill Lumber," Fine Woodworking, https://www.finewoodworking.com/2010/06/10/how-to-mill-lumber | trade (NOT re-opened this pass; the milling order in this entry is not quoted from it)

[T10] "Troubleshooting Planer Tearout and Snipe," WoodWeb, https://woodweb.com/knowledge_base/Troubleshooting_Planer_Tearout_and_Snipe.html | trade (relayed)

[T13] Ryobi AP-10 owner's operating manual (scanned, attometer.com) | manufacturer (existence only; no launch year or "first" claim)

[T15] "Save Money On Wood: Buy Rough Sawn Lumber," ToolsToday; "S4S vs. Rough Lumber," Craftsmen Supply Center | supplier (relayed; price figures dropped)

[T16] OSHA 29 CFR 1910.213, https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.213 (also https://www.law.cornell.edu/cfr/text/29/1910.213) | regulation; paragraph (n)(1) to (n)(3) wording (metal guard over cutting heads; hood or suitable guard on feed rolls to prevent hand contact with in-running rolls) seen in a search excerpt; page itself not opened

[T16b] OSHA Sawmills eTool, "Planers," https://www.osha.gov/etools/sawmills/log-breakdown-machinery-facilities/planers | authoritative hazard page (cited by the reviewer for the infeed-roll hazard; not opened this pass)

[T17] DATAMP, "US Patent: X5,315 - Planer-matcher," https://www.datamp.org/patents/displayPatent.php?number=5%2C315&type=X | patent database (listing seen in search excerpt: William Woodworth, Hudson NY, 27 Dec 1828)

[T17b] DATAMP, "US Patent: RE71 - Woodworth planer," https://www.datamp.org/patents/displayPatent.php?number=71&type=RE | patent database (search excerpt: reissue of 8 July 1845)

[T18] "US80A - Worth," Google Patents, https://patents.google.com/patent/US80A/en | patent record (the separate 1836 patent; seen in search results, not opened)