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Delta Machinery

Delta Machinery is an American manufacturer of high-quality stationary woodworking tools and power equipment, renowned for its precision and durability in professional and advanced woodworking applications.^[1] Founded in 1919 by Herbert Tautz as the Delta Specialty Company in a one-car garage in Milwaukee, Wisconsin, the company initially operated as a small metalworking shop producing parts and custom machinery.^[2] Key innovations marked Delta's early growth, including the introduction of its first scroll saw with an adjustable table in 1923, which set a standard for precision cutting tools.^[2] In 1939, Delta launched the Unisaw, a heavy-duty table saw that became an industry benchmark for accuracy and reliability, featuring a cast-iron table and robust construction.^[2] The company expanded significantly during World War II by supplying precision tools to the war effort, and in 1945, it relocated its headquarters to Jackson, Tennessee, to accommodate larger-scale manufacturing.^[2] In the 1950s, Delta collaborated with Rockwell Manufacturing Company, forming the Rockwell/Delta line that further solidified its leadership in the power tool market.^[2] Ownership changes shaped the company's modern era: it was acquired by Rockwell in 1945, then by Pentair in 1981, and subsequently by Black & Decker in 2004 (which merged with Stanley Works in 2010 to form Stanley Black & Decker), before being sold to the Taiwanese firm Chang Type Industrial Co., Ltd., in 2011, establishing Delta Power Equipment Corporation as an independent entity headquartered in Anderson, South Carolina.^[3]^[4]^[5] Today, Delta Machinery designs, manufactures, and distributes a wide range of stationary woodworking tools, including table saws, band saws, jointers, planers, scroll saws, lathes, dust collectors, and mortisers, all engineered for professional-grade performance with features like heavy-duty cast-iron components and low-vibration systems.^[1]^[6] The brand emphasizes innovation to enhance precision while saving time, space, and energy, maintaining its legacy as a trusted name among woodworkers worldwide for over a century.^[1]

Overview

Company Profile

Delta Machinery traces its origins to 1919, when Herbert Tautz established the Delta Specialty Company in a small metalworking shop in Milwaukee, Wisconsin.^[2] The company now operates as Delta Power Equipment Corp., a wholly owned subsidiary of Taiwan-based Chang Type Industrial Co., Ltd., which acquired the brand in 2011 to focus on its core strengths.^[7] This entity specializes in the design, manufacturing, and distribution of stationary power woodworking tools, emphasizing precision engineering and durable construction for demanding applications.^[2] Delta holds a prominent position in the woodworking tools industry, producing equipment known for reliability and performance that supports professional craftsmen and serious hobbyists in creating high-quality woodwork.^[6] The brand has built a reputation for trustworthiness over more than a century, culminating in a 2019 centennial celebration that highlighted its contributions to tool innovation and user-centric design.^[8] As a mid-sized manufacturer, Delta employs between 11 and 50 people and maintains global distribution channels while prioritizing the North American market for its primary sales and support operations.^[9]

Operations and Facilities

Delta Power Equipment Corporation, the entity behind the Delta Machinery brand, maintains its headquarters and primary operations at 2651 New Cut Road in Spartanburg, South Carolina, where all functions have been centralized since 2016.^[10] This facility serves as the core hub for the company's activities in the United States, encompassing design, quality control, and distribution processes for its lineup of stationary woodworking tools.^[9] The Spartanburg site features dedicated areas focused on producing high-quality power tools, with an emphasis on precision engineering and quality control to meet industry standards. Influenced by its parent company, Chang Type Industrial Co., Ltd., based in Taiwan, Delta's manufacturing and assembly occur primarily in Asia, particularly Taiwan, while the U.S. facility handles final quality assurance, packaging, and distribution to ensure compliance with domestic regulations and maintain brand heritage. Distribution occurs through a network of major retailers such as Home Depot, Lowe's, and Menards, alongside specialty woodworking outlets like Acme Tools and online platforms including Amazon, enabling broad accessibility to professional and hobbyist markets.^[11] Delta employs a compact workforce of approximately 40 individuals at its Spartanburg operations, supporting efficient manufacturing and support functions.^[12]

History

Founding and Early Years (1919–1945)

Delta Machinery was founded in 1919 as the Delta Specialty Company by Herbert Tautz, a skilled machinist and German immigrant, along with business partner William Peters, operating out of a one-car garage at 969 Louis Avenue in Milwaukee, Wisconsin.^[13] Initially, the company focused on producing small parts for the Universal pattern maker's vise, as well as jigs and repair parts for woodworking machinery, catering to the post-World War I demand for affordable maintenance solutions in the burgeoning woodworking industry.^[13] This modest start emphasized precision machining, leveraging Tautz's expertise to build a foundation for tool manufacturing.^[8] By the mid-1920s, Delta expanded its product line to include complete tools, beginning with the American Boy Scroll Saw in 1923, a motorized design that sold for $20 and targeted hobbyists and small shops.^[13] Further diversification followed in 1928 with the introduction of the American Girl Sewing Machine and the Handishop, a versatile unit combining a table saw, lathe, sander, and scroll saw for home use.^[13] In 1929, the company rebranded as Delta Manufacturing Company and relocated to larger facilities at 1661-1667 Holton Street in Milwaukee to accommodate growing production, releasing key items such as a 4-inch jointer and an 8-inch tilt-table saw that same year.^[13] These developments capitalized on the era's rising interest in powered woodworking tools, establishing Delta's early reputation for durable, user-friendly equipment.^[2] The Great Depression posed significant challenges in the 1930s, forcing Delta to prioritize affordable, high-quality tools to sustain operations amid economic hardship.^[13] Under Tautz's sole leadership after Peters' departure in 1923, the company introduced the Delta Woodshop #12 in 1930, a compact setup for educational and home workshops, and built a new plant at 600-634 East Vienna Avenue in Milwaukee by 1935 to enhance efficiency.^[13] Innovations like the Unisaw, the first 10-inch cabinet saw with a tilting arbor launched in 1939 for $89.50 (without motor), underscored Delta's commitment to precision engineering despite the downturn.^[13] By the early 1940s, as World War II shifted production toward military contracts from 1941 onward, Delta had solidified its standing in the woodworking sector with a workforce supporting dozens of employees and a catalog of bench grinders, drill presses, and other stationary tools known for reliability.^[13]^[8]

Rockwell Era (1945–1984)

In 1945, Rockwell Manufacturing Company, a Pittsburgh-based conglomerate originally formed as the Pittsburgh Equitable Meter and Manufacturing Company in 1927, acquired Delta Machinery and reorganized it as the Delta Power Tool Division of Rockwell Manufacturing Company. This integration allowed Delta to leverage Rockwell's broader resources while continuing to focus on woodworking machinery production, initially maintaining manufacturing in Milwaukee, Wisconsin.^[14]^[13] Under Rockwell's ownership, Delta underwent significant expansion to capitalize on the post-World War II economic recovery, where the company had previously contributed to the war effort by dedicating all production to military needs and earning congressional recognition as a provider of "the machine guns of production."^[8] The division ramped up output through strategic acquisitions, including Red Star Products in 1948 for radial arm saw expertise, Walker-Turner in 1956, and Porter-Cable Machine Company in 1960, which bolstered its capabilities in portable and professional tools. In the 1960s, further growth came from purchases like Buckeye Tool Company in 1963 for pneumatic tools and Duro Metal Products in 1968 for routers and shapers, enabling Delta to meet rising demand in the construction and woodworking sectors.^[8]^[14] A pivotal innovation during this period was the invention of the world's first power miter saw in 1966, developed through Rockwell's research and development efforts to provide a portable, precise cutting tool for professional use. Delta emphasized radial arm saws and table saws, scaling production of the iconic 10-inch Unisaw—originally introduced in 1939—to support professional woodworkers, while incorporating advancements in tool durability and efficiency.^[15]^[14] The Rockwell era concluded in 1984 when Rockwell International sold its stationary woodworking machinery division—including Delta—to Pentair Inc. as part of broader divestitures to focus on aerospace and defense (portable power tools had been sold to Pentair in 1981 and rebranded as Porter-Cable). By this time, Delta had established itself as an industry leader in professional woodworking tools, particularly in radial arm saws, table saws, and miter saws.^[8]^[14]

Pentair and Black & Decker Period (1984–2011)

In 1984, Pentair, Inc. acquired Delta's stationary woodworking machinery division from Rockwell International, renaming and integrating it as Delta International Machinery Corporation within its Professional Tools and Equipment group as a key manufacturer of woodworking machinery.^[16] This move followed Pentair's entry into the power tools sector in 1981, when it purchased Rockwell's portable power tool division, laying the groundwork for broader tool operations.^[17] Under Pentair's ownership, Delta focused on cost efficiencies through centralized purchasing and operational restructuring, aiming for annual savings of up to $30 million by 2001 via facility consolidations and workforce reductions.^[16] In the late 1990s, Pentair merged Delta's manufacturing with that of its Porter-Cable division at a primary U.S. facility in Jackson, Tennessee, streamlining production for stationary woodworking tools.^[14] To address growing international demand, Delta introduced an imported line of consumer-market tools in 1985, marking an early shift toward overseas sourcing for select products.^[13] In October 2004, Black & Decker Corporation acquired Pentair's entire Tools Group, including Delta, for $775 million in cash, nearly doubling Black & Decker's power tool sales and incorporating Delta into its professional-grade portfolio alongside brands like DeWalt while preserving the Delta name for woodworking specialists.^[4] The transaction closed amid Pentair's strategic pivot to water treatment and other sectors, with Delta's operations continuing largely unchanged initially.^[16] Following Black & Decker's merger with Stanley Works in March 2010 to form Stanley Black & Decker, Delta benefited from integrated supply chains but encountered market pressures from rising competition by low-cost imports from Asia, prompting further offshoring of components in the late 2000s.^[18] This sourcing evolution contributed to perceptions of declining quality in some Delta products, diluting the brand's reputation for durability among professional woodworkers during the period.^[5] By 2011, amid a strategic refocus on consumer-oriented tools, Stanley Black & Decker divested the Delta brand—along with select related woodworking lines—to Taiwan-based Chang Type Industrial Co., Ltd. (TOTY) for an undisclosed amount, allowing Delta to operate independently once more.^[5] The sale, completed on February 4, 2011, marked the end of over two decades of corporate consolidation under Pentair and Black & Decker, during which Delta navigated efficiency drives and global competitive shifts while maintaining its core focus on high-end stationary tools.^[19]

Chang Type Ownership (2011–present)

In January 2011, Stanley Black & Decker sold the Delta brand to Chang Type Industrial Co., Ltd., a Taiwan-based manufacturer of power tools and equipment. Chang Type established Delta Power Equipment Corp. as a wholly owned U.S. subsidiary to oversee the brand's operations, trademarks, designs, and tooling, marking Delta's return to independent management after decades under larger conglomerates.^[5]^[20] Following the acquisition, Delta Power Equipment Corp. implemented key strategic shifts to revitalize the brand, including relocating its headquarters, manufacturing, research and development, and administrative functions from Jackson, Tennessee, to Anderson, South Carolina. This move aimed to strengthen U.S.-centric operations and invest in quality improvements, with an emphasis on American assembly to restore the brand's reputation for durable, professional-grade woodworking tools. The relocation, completed in early 2011, involved an investment exceeding $3 million and created 40 jobs in the region.^[21]^[22] Post-2011 growth focused on reintroducing heritage product lines with contemporary upgrades to appeal to professional woodworkers. For instance, the iconic Unisaw table saw was relaunched with enhanced features like improved dust collection and precision adjustments, building on its legacy design while addressing modern user needs. In 2019, Delta marked its 100th anniversary with events and campaigns celebrating its founding in 1919, which reinforced brand loyalty among long-time customers and highlighted the company's enduring commitment to innovation in stationary power tools.^[23]^[8] Entering the 2020s, Delta navigated challenges from the COVID-19 pandemic, including global supply chain disruptions that affected the woodworking tool industry, by leveraging its U.S.-based production to minimize delays and maintain product availability. By 2025, the company has stabilized its operations, emphasizing advanced tool features such as precision T-square fence systems for enhanced accuracy and efficiency in professional applications.^[24] As a privately held entity under Chang Type, Delta maintains a focused niche in professional woodworking without aggressive expansions, with estimated annual revenues of $50-100 million reflecting its steady market position as a specialized leader in high-quality stationary tools.^[25]

Products

Table Saws and Radial Arm Saws

Delta Machinery's table saw offerings center on the renowned Unisaw line, which has been a cornerstone of professional woodworking since its introduction in 1939 as the world's first tilting-arbor cabinet saw.^[26] These 10-inch models, available in contractor and cabinet configurations, feature robust construction with heavy cast-iron tables for stability and vibration reduction, precision Biesemeyer fence systems accurate to 1/64 inch, and motors ranging from 1.5 to 5 HP to handle demanding cuts.^[27] The Unisaw's design emphasizes durability and accuracy, making it an industry standard for cabinetmakers and serious hobbyists.^[2] Current Unisaw models include the 36-L336 with a 3 HP motor and 36-inch rip capacity, equipped with dual front cranks for easy adjustments and a bevel scale precise to 1/4 degree.^[27] Another variant, the 36-L352, offers a 52-inch Biesemeyer fence for larger workpieces, powered by a 3 HP, 230V motor designed for continuous professional use.^[28] Both incorporate advanced safety elements, such as tool-free split guards with rise-and-fall riving knives and push-button arbor locks, ensuring compliance with OSHA standards for blade guarding.^[27] In addition to cabinet saws, Delta provides contractor and jobsite variants introduced in the 2010s to balance portability and precision. The 36-725T2 contractor model combines a cast-iron table with a lighter frame and 1.5 HP motor, suitable for workshops needing mobility without compromising cut quality. Jobsite options like the 36-6013 portable 10-inch saw feature folding stands and 15-amp motors for on-site accuracy, weighing approximately 65 pounds for easy transport.^[29] Across these lines, integrated dust collection systems—such as bi-level ports and sealed components—minimize airborne particles, enhancing shop cleanliness and operator health.^[27] Delta's radial arm saws, once a versatile complement to table saws, include the discontinued RS830 10-inch model with a 1.5 HP dual-voltage motor, capable of crosscuts up to 18 inches, miter cuts, and ripping operations.^[30] This saw's sliding arm mechanism allowed for precise positioning and multi-angle adjustments, with features like automatic blade brakes for safety.^[31] Updated versions in the late 20th century incorporated enhanced blade guards and anti-kickback devices to meet evolving OSHA requirements, though production ceased as miter saws gained prominence for similar tasks.^[32] Priced between $1,000 and $3,000 for professional-grade units, Delta's table and radial saws remain flagship tools, with the Unisaw continuing as a bestseller in the market.^[33]

Band Saws and Other Stationary Tools

Delta Machinery's band saw lineup includes 14-inch vertical models such as the 28-400, which features a 1 HP, 120/240-volt single-phase motor, a 14-inch by 14-inch cast-iron table, and a throat capacity of 13-1/2 inches.^[34]^[35] This model supports a maximum stock thickness of 6 inches standard, with steel-block blade guides for precise curve cutting and beveling up to 45 degrees.^[35] Designed for woodworking applications requiring intricate shapes or thickness reduction, the 28-400 offers two-speed operation (1,100/1,800 SFPM) and a quick-tension blade release for efficient setup.^[34] Complementing the band saws, Delta's other stationary tools encompass a range of machinery tailored for precision finishing and support in woodworking workflows. The 37-071 6-inch bench jointer, for instance, provides a compact design with a 1.5 HP motor operating at variable speeds, enabling smooth edge jointing for boards up to 6 inches wide.^[36] The 13-inch planer, such as the 22-555 model, accommodates straight knife cutterheads for surface finish, with a 2 HP motor handling stock up to 5/32 inches thick at feed rates of 26 feet per minute.^[37] Lathes like the 46-460 MIDI model offer a 12-1/2-inch swing capacity over the bed and variable speeds from 250 to 4,000 RPM via a 1 HP motor, suitable for spindle and bowl turning.^[38] Additional offerings include the 14-651 1/2 HP hollow chisel mortiser for square-hole drilling in joinery, the 40-694 20-inch variable-speed scroll saw (400-1,750 strokes per minute) for intricate fretwork, and the 50-767 1.5 HP dust collector with 1-micron filtration for shop air quality.^[39]^[40]^[41] Across these tools, Delta emphasizes design elements that enhance professional performance, such as helical cutterheads in jointers and planers for quieter operation and longer tool life compared to straight knives, along with modular accessories like extension tables and mobile bases.^[42] Heavy cast-iron construction minimizes vibration, ensuring stable cuts in demanding shop environments, while rack-and-pinion adjustments facilitate precise setups.^[43] As of 2025, Delta's entry-level stationary tools, such as basic scroll saws and dust collectors, typically retail for $300 to $800 through industrial suppliers like Acme Tools and Mike's Tools, whereas professional-grade models like the upgraded planers or jointers exceed $1,500, reflecting their robust build and capacity.^[44]^[45] These tools find niche applications in cabinetry and furniture making, where band saws and scroll saws enable complex contours, jointers and planers ensure flat surfaces, and mortisers create strong joints; safety features, including magnetic start/stop switches that prevent unintended restarts after power loss, are standard to protect operators in high-volume production.^[46] Band saws like the 28-400 integrate seamlessly with table saw outputs by handling secondary resawing and curving tasks in multi-step workflows.^[42] As of 2025, Delta continues to emphasize portable and professional-grade stationary tools in its lineup.^[1]

Innovations and Legacy

Key Technological Developments

Delta Machinery's foundational technological contributions to woodworking tools trace back to the innovations of founder Herbert Tautz, who developed an early radial arm saw design enabling multi-function cutting capabilities, including ripping, crosscutting, and mitering on a single versatile machine.^[47] This design, formalized in U.S. Patent No. 2,038,810 filed in 1934 and granted in 1936, featured a pivoting radial arm supporting a circular saw blade, allowing precise positioning over a fixed table for enhanced operational flexibility in workshops.^[47] Over time, the radial arm saw evolved under Delta's stewardship, with modern iterations incorporating integrated laser guides to project accurate cut lines, improving alignment and reducing errors in demanding applications.^[48] A pivotal advancement came in 1966 during the Rockwell era, when Delta introduced the world's first portable power miter saw, featuring a motorized blade mounted on an adjustable base for on-site precision cutting.^[49] This tool supported compound miter angles up to 45 degrees bevel, enabling efficient bevel and miter combinations essential for framing, trim work, and cabinetry, and setting a standard for portability in professional woodworking.^[49] The Unisaw, Delta's iconic table saw first released in 1939 (with design work originating in 1937), revolutionized stationary saws through its enclosed steel cabinet base, which enhanced structural stability, vibration dampening, and basic dust containment relative to traditional open-frame models.^[2]^[13] The design incorporated a tilting arbor mechanism for bevel cuts, patented in related filings by Tautz such as U.S. Patent No. 2,265,407, prioritizing precision and durability for heavy-duty use.^[50] Subsequent Unisaw enhancements included the adoption of Biesemeyer fences after Delta's 1995 acquisition of the brand, delivering exceptional rip accuracy—capable of parallelism within 0.001 inches—to support fine woodworking and production-level accuracy.^[51]^[52] In the 1970s, Delta pioneered integrated dust collection systems for its stationary tools, incorporating hooded ports and exhaust features that captured and redirected airborne particles to minimize workshop hazards and improve air quality.^[53] These systems, supported by patents on related airflow mechanisms, marked an early emphasis on environmental and health considerations in tool design. By the 2000s, Delta advanced cutter technology with helical cutterheads for planers and jointers, utilizing staggered rows of carbide inserts to produce superior surface finishes, reduce tear-out on figured woods, and lower operational noise compared to straight-knife alternatives.^[54] Delta's ongoing research and development efforts have yielded over 200 historical patents across its legacy, with continued innovations under current ownership including the Delta ShopMaster Table Saw (introduced in 2025) for enhanced portability and precision, and a strong focus on safety enhancements such as quick-release riving knives—thinner than traditional splitters and positioned behind the blade—to prevent kickback while maintaining compatibility with various cuts, as detailed in patents like U.S. Patent Application No. 2009/0120254.^[53]^[55]^[56] These innovations, alongside ergonomic adjustments like user-friendly controls and reduced-vibration components, underscore Delta's commitment to safer, more intuitive tool operation across its product line.^[53]

Industry Impact and Recognition

Delta Machinery has significantly shaped the woodworking industry through its pioneering developments in power tools, emphasizing precision, durability, and accessibility for both professionals and hobbyists. Founded in 1919 by Herbert Tautz, the company revolutionized woodworking practices by introducing the world's first 10-inch tilting arbor table saw, the Unisaw, in 1939, which established an enduring industry standard for accuracy and reliability in cutting operations.^[57]^[58] This innovation transformed table saw design, enabling more efficient workflows and influencing subsequent tool manufacturing across the sector.^[2] Earlier contributions, such as the patented "American Boy" scroll saw in 1921 and the adjustable-table scroll saw in 1923, democratized intricate woodworking techniques, making them feasible for home workshops and small-scale production during the early 20th century.^[8] Delta's focus on modular tool systems and high-quality engineering during the mid-20th century further expanded its impact, powering post-World War II hobbyist booms and professional cabinetry work.^[13] The brand's legacy endures as "The Measure of Precision," with tools trusted by millions for their consistent performance in demanding environments.^[59] In recognition of its century-long influence, Delta celebrated its 100th anniversary in 2019, underscoring its role in advancing woodworking technology from garage origins to global leadership.^[60] While specific awards are less documented, the company's innovations have earned widespread acclaim in trade publications and among woodworkers, solidifying its status as a foundational pillar of the industry.^[61]

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Herbert E Tautz; Current Assignee. The listed assignees may be inaccurate ... machine. US3294129A 1966-12-27 Radial arm saw machine. Priority And Related ...
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https://www.datamp.org/patents/displayPatent.php?pn=2265407&id=8415
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http://vintagemachinery.org/mfgindex/detail.aspx?id=2709
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US Patent: 2,265,407 - Tilting arbor saw - DATAMP
US patent 2265407 Tilting arbor saw was issued to Herbert E. Tautz of Milwaukee, WI. It was granted on 12/09/1941. This patent covers the Unisaw mechanicals ...Missing: invention radial arm
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Biesemeyer Manufacturing Corp. - History | VintageMachinery.org
Jan 26, 2021 · In 1995 the business was acquired by Delta Manufacturing Co., who continue to manufacture the Biesemeyer line of fences until at least 2011 ...
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Delta Unisaw with Biesemeyer Fence System Review
Apr 15, 2013 · The result is a very powerful, accurate cabinet saw built to last a generation—much like a fine piece of heirloom furniture. I'm proud to have ...Missing: acquisition | Show results with:acquisition
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Delta / Rockwell Mfg / Rockwell-Delta - Assigned Patents
This patent covers a tilting-arbor mechanism that is somewhat similar to the mechanism ultimately used in the Unisaw. The actual Unisaw mechanicals were covered ...
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SHELIX Heads for Planers by DELTA - MyWoodCutters.com
3–5 day delivery 30-day returnsThe ORIGINAL SHEAR & HELIX and spiral cutter non-grind design. Below are the DELTA Planer models listed for which we offer a SHELIX Helical Cutter Head.
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https://www.jlconline.com/tools/fastening-tools/power-tools/hall-of-fame-2001_o
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US20090120254A1 - Table Saw - Google Patents
Riving knife assembly for a dual bevel table saw. AU2003286805A1 * 2002-10-31 2004-06-07 Delta International Machinery Corp. Dual bevel table saw. US7290474B2 ...
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Delta Unisaw Table Saws - Mike's Tools
30-day returnsDELTA Machinery turned the industry upside down in 1938 with the invention of the world's first 10" Tilting arbor saw-
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ABOUT US – Delta Machinery
### Summary of Delta Machinery's Industry Impact, Recognition, Awards, Innovations, and Legacy
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100 Years of Legacy - Delta Machinery - YouTube
Nov 8, 2019 · Delta Machinery has been developing and innovating the woodworking industry for over 100 years. From generation to generation, ...Missing: Rockwell WWII boom production<|control11|><|separator|>
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Unisaw: Made in the U.S.A. | Popular Woodworking
Jan 13, 2009 · Case in point: Each Delta Unisaw is purchased with a Marathon motor included. Marathon Electric, a company based in Wausau, Wisconsin, builds ...