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Crowbar

A crowbar, also known as a pry bar or wrecking bar, is an iron or steel bar typically featuring a wedge-shaped working end designed to function as a lever for prying open objects, lifting heavy loads, or forcing materials apart.^[1] The tool often includes a flattened, chisel-like edge at one end for insertion under surfaces and may have a curved or forked section at the opposite end for enhanced leverage or nail removal.^[2] As a fundamental simple machine, a crowbar operates on the principle of a first-class lever, with a fulcrum point between the applied effort force and the load, allowing users to multiply force for mechanical advantage in tasks requiring significant power.^[3] Crowbars have been essential hand tools in construction, demolition, salvage operations, and emergency response since at least the 15th century, when they were known simply as "crows" due to the forked end's resemblance to a crow's foot.^[4] The modern term "crowbar" emerged by the mid-18th century to distinguish the tool from the bird, with the first documented printed use appearing in 1748.^[1] Over time, designs evolved to include variations such as gooseneck crowbars with a curved claw for pulling nails and spikes, and straight chisel-ended bars for general prying, each tailored to specific applications like trail maintenance or structural disassembly.^[2]^[5] These tools are prized for their durability, with modern versions typically forged from high-carbon steel to withstand intense leverage without deforming.^[6]

Overview and Function

Definition and Purpose

A crowbar is a hand tool consisting of a metal bar, typically made of iron or steel, with one end shaped for wedging or prying and the other end often flattened or curved to provide leverage.^[1] The working end is usually wedge-shaped or forked, allowing it to be inserted into tight spaces, while the overall design resembles a straight or slightly bent bar that functions as a first-class lever.^[7] This configuration enables users to apply mechanical advantage by positioning a fulcrum point along the bar, amplifying force to separate objects or lift loads with minimal effort.^[8] The primary purpose of a crowbar is to exert force for prying, leveraging, or demolishing materials, making it essential in construction, demolition, and salvage work.^[9] It is commonly used to pull nails, remove molding or trim, open crates, or force apart joined structures like boards or doors, where direct hand strength would be insufficient.^[10] In mechanical terms, the crowbar operates on the principle of leverage, where the input force applied at the longer end produces a greater output force at the shorter working end, often multiplying effort by a factor dependent on the bar's length and fulcrum placement.^[8] Beyond heavy-duty applications, smaller variants serve in automotive repair for tasks like separating seized parts or in emergency scenarios for breaching barriers.^[11] The tool's versatility stems from its simple, durable form, which requires no power source and can be wielded by a single person, though safety considerations include risks of slippage or rebound that demand proper technique to avoid injury.^[12]

Mechanical Principles

A crowbar operates primarily as a first-class lever, where the fulcrum is positioned between the points of effort and load application, allowing the tool to amplify the force exerted by the user to overcome resistance. In this configuration, the user applies effort at one end of the bar (typically by pushing down), the fulcrum is the pivot point where the bar contacts a stable surface or the edge of the object being pried, and the load is the resistance from the object, such as a nail or crate lid. This setup enables the crowbar to multiply the input force, making it easier to lift or separate objects that would otherwise require significantly greater direct effort.^[13]^[3] The mechanical advantage (MA) of a crowbar as a first-class lever is determined by the ratio of the distance from the fulcrum to the point of effort (effort arm) to the distance from the fulcrum to the load (load arm). This relationship arises from the principle of torque equilibrium, where the torque produced by the effort equals the torque produced by the load:
\tau_{\text{effort}} = \tau_{\text{load}}
F_{\text{effort}} \times d_{\text{effort}} = F_{\text{load}} \times d_{\text{load}}
Thus,
\text{MA} = \frac{F_{\text{load}}}{F_{\text{effort}}} = \frac{d_{\text{effort}}}{d_{\text{load}}}
A longer effort arm relative to the load arm results in a higher MA, which reduces the force needed while increasing the distance the user must move. For instance, positioning the fulcrum close to the load maximizes force amplification, ideal for prying tasks.^[14]^[3]^[13] Depending on usage, a crowbar can also function as a second-class lever when the flat end is wedged under the load and used to pry upward, with the fulcrum at the opposite end and the load between the effort and fulcrum; this configuration inherently provides an MA greater than 1, prioritizing force over speed. However, the first-class mode is most common for its versatility in demolition and salvage work. Material properties, such as the bar's rigidity, ensure minimal deformation under load, preserving the lever's efficiency by maintaining straight-line force transmission.^[14]^[13]

History and Etymology

Origins of the Term

The term "crowbar" originated in English during the mid-18th century, with its earliest recorded use dating to 1748 in colonial American documentation from New Jersey, where it referred to an iron bar used as a lever.^[15] Prior to this, the word "crow" alone had been applied since around 1400 to describe a similar iron bar with a bent or forked end, functioning as a prying tool.^[16] This earlier usage of "crow" likely stems from the tool's forked or wedge-shaped end, which was thought to resemble the foot or beak of a crow, the bird.^[17] Etymological analysis traces the "crow" component to a metaphorical resemblance rather than any direct connection to the bird itself in a literal sense. According to historical linguists, the name may also derive from Old French "cros," the plural of "croc" meaning "hook," reflecting the tool's curved, hook-like tip used for leverage.^[16] By the 19th century, the compound "crowbar" had become standardized, distinguishing it from other iron bars and emphasizing its specific design for prying and lifting. A 1934 explanation in a Buffalo News column reinforced this, stating that the term arose "from the fancied resemblance of the bent and flattened point of the instrument to the bill of a crow."^[15] Claims linking "crowbar" to racial slurs like "Jim Crow," which emerged in the 1820s through minstrel performances, are unfounded, as the tool's terminology predates these by centuries and pertains solely to its physical form.^[18] The Oxford English Dictionary confirms the mid-1700s origin for "crowbar," solidifying its roots in tool nomenclature rather than social or cultural connotations.^[19]

Historical Development

The crowbar evolved from the fundamental lever, one of the earliest simple machines used by humans. Prehistoric peoples employed wooden or bone levers for tasks such as lifting stones and digging, with evidence of such tools dating back to the Paleolithic era for excavation and moving heavy objects.^[20] In ancient civilizations, levers were refined for construction; for instance, the Egyptians utilized them around 2600 BCE to maneuver massive stones during pyramid building, applying the principle of mechanical advantage to amplify human strength.^[21] The Greek mathematician Archimedes formalized the lever's mechanics in the 3rd century BCE, describing its equilibrium and potential in his work On the Equilibrium of Planes, which laid theoretical groundwork for later tool designs like pry bars.^[22] By the medieval period, metalworking advancements enabled the transition from rudimentary wooden levers to iron-based pry tools. The earliest documented references to a specialized iron lever, known as an "iron crow," appear in European literature and records from the early 1400s, where it was used for prying open doors, lifting beams, and demolition work.^[20] This tool's forked end resembled a crow's beak or foot, influencing its nomenclature, and it became essential in construction and siege warfare, as noted in 15th-century texts like Shakespeare's Romeo and Juliet, which mentions "crow" as a prying implement.^[23] Over the 16th and 17th centuries, variations proliferated, including smaller bars for gardening and larger ones for shipbuilding, reflecting improvements in blacksmithing techniques that allowed for sharper, more durable edges.^[15] The term "crowbar" emerged in the mid-18th century, first attested in 1748 colonial American records describing its use in a New Jersey riot for forcing entry.^[15] This coincided with the Industrial Revolution, when mass production of forged iron tools standardized the crowbar's design—a straight shaft with a curved, chisel-like end—for heavy construction, railroad laying, and mining.^[10] By the 19th century, further metallurgical progress introduced tempered steel variants, enhancing strength and reducing breakage, which solidified the crowbar's role in global infrastructure projects like bridges and factories.^[16] Its development from a basic lever to a versatile metal tool underscores centuries of iterative refinement driven by practical needs in labor-intensive industries.^[18]

Design and Construction

Materials Used

Crowbars are predominantly manufactured from steel alloys engineered for high tensile strength, impact resistance, and longevity in demanding applications such as prying and leveraging. The choice of material directly influences the tool's ability to withstand bending, chipping, and fatigue without compromising functionality.^[24] The most common material for crowbar construction is carbon steel, typically medium to high carbon variants that provide a balance of hardness and toughness. Forged carbon steel is favored for its uniform grain structure, which enhances durability during repeated heavy-duty use, as seen in models from manufacturers like Klein Tools, where the bars are hardened for added strength and coated for corrosion resistance.^[24] Similarly, Stanley Tools employs forged steel in hexagonal or flat profiles, often incorporating spring steel properties to maintain flexibility under stress while resisting permanent deformation.^[25] For premium or specialized crowbars, high-alloy steels such as boron-enhanced variants are utilized to achieve superior performance characteristics, including greater yield strength and reduced weight. Swedish manufacturer Hultafors, for instance, produces wrecking bars from hardened, high-alloy boron steel sourced from Ovako, which offers exceptional resistance to wear and a lower carbon footprint compared to standard global averages.^[26] These alloys incorporate elements like boron to refine the microstructure, improving hardenability and allowing thinner profiles without sacrificing prying capacity.^[27] Ergonomic enhancements often include non-steel components, such as thermoplastic rubber (TPR) grips on the handles to absorb vibrations and improve user control, though the core structural integrity relies entirely on the steel body. Stainless steel variants exist for environments requiring corrosion resistance, such as marine or chemical settings, but they are less common due to higher costs and slightly reduced impact toughness compared to carbon steels.^[24] Overall, material selection prioritizes a combination of cost-effectiveness and mechanical properties to meet diverse professional needs in construction and demolition.

Manufacturing Processes

Crowbars are primarily manufactured through a series of industrial processes that transform raw steel into durable, high-strength tools capable of withstanding significant leverage and impact forces. The production emphasizes forging to achieve the characteristic shape, followed by heat treatment for enhanced mechanical properties, and finishing steps to ensure surface quality and corrosion resistance. These methods vary by manufacturer but generally prioritize efficiency, material integrity, and compliance with standards like those for carbon steel tools. The process begins with material selection and preparation. Round bar steel, such as 45# medium-carbon steel (equivalent to AISI 1045), is commonly used due to its balance of strength, toughness, and forgeability, typically in diameters of 40-50 mm and lengths of 500-590 mm.^[28] The steel is cut to size before heating, with grades like IS 2062 mild steel also employed in some productions for cost-effective structural integrity.^[29] Forging forms the core of crowbar production, shaping the heated steel into the tool's elongated, hexagonal or I-beam profile with specialized ends like claws or points. In roll forging, the steel is heated to 1100-1150°C and passed through grooved dies on a roll forging machine, progressively forming a rhombus cross-section, then square, octagonal body, and rounded or elliptical tail, requiring only two heating cycles compared to four in traditional free forging.^[28] Alternative methods include drop forging or hot stamping, where heated metal (around 800-1000°C) is pressed into dies for precise shaping, enhancing grain structure for superior strength.^[30] Swaging, a compressive forging variant, may refine sections, while the overall process increases efficiency by over three times and reduces energy use by more than 50%.^[28] The forged bar is then trimmed to final lengths of 1250-1350 mm, with tips reheated and shaped as needed.^[28] Heat treatment follows forging to optimize hardness and toughness. The crowbar is austenitized by heating to 800-900°C, then quenched in media like brine, water, or oil to form martensite. Brine quenching yields the highest hardness due to rapid cooling, though tempering is applied post-quench to relieve stresses and improve ductility, targeting Brinell hardness of 200-250 HB.^[29] This step uses furnaces and quenching tanks, ensuring the tool's core strength for prying applications without brittleness.^[29] Finishing operations complete the manufacturing. Grinding smooths surfaces and sharpens edges using abrasive grinders, followed by polishing or shot blasting for a clean finish.^[29] Protective coatings, such as enamel paint, lacquer, or nickel plating, are applied to prevent rust, with machining used for precision adjustments on ends or features.^[30] The treated crowbars are inspected, typically achieving capacities of 20,000 units per month in mid-scale facilities, then packed for distribution.^[29]

Types and Variants

Standard Crowbars

Standard crowbars, also known as wrecking bars or basic pry bars, are fundamental hand tools designed primarily for applying mechanical leverage to pry apart materials, remove nails, or lift heavy objects in construction and demolition settings.^[11]^[30] They typically consist of a single-piece shaft with distinct ends optimized for different functions: one end features a flat, wedge-shaped or chisel-like tip for inserting under objects and applying force, while the opposite end has a forked or clawed notch for gripping and extracting fasteners like nails or screws.^[11]^[31] This dual-ended design provides versatility without requiring multiple tools, making standard crowbars a staple in toolkits for general-purpose tasks.^[30] The construction of standard crowbars emphasizes durability and strength, with the shaft often forged from medium to high-carbon steel or heat-treated alloy steel to withstand high leverage forces without bending or fracturing.^[11]^[31] These materials offer a balance of hardness and toughness, allowing the tool to handle repeated impacts and torsional stress common in prying operations.^[30] Shaft profiles vary slightly for ergonomic and functional reasons—common shapes include hexagonal, I-beam, or rounded designs to enhance grip and distribute force evenly—while surface finishes such as black oxide coating or chrome plating provide corrosion resistance for prolonged use in damp environments.^[31]^[30] Lengths typically range from 15 to 24 inches for medium-sized standard models suited to most everyday applications, though shorter 8- to 12-inch versions exist for precision work in confined spaces.^[31] Within the category of standard crowbars, subtle variations cater to specific leverage needs while maintaining core functionality. For instance, the gooseneck crowbar incorporates a curved section near the claw end, which increases the angle of pull for better nail extraction and reduces the risk of slippage during heavy prying.^[31]^[11] The flat bar, sometimes called a wonder bar, features a thinner, wider profile with offset claws at both ends for close-quarters work like trim removal, prioritizing maneuverability over raw power.^[30]^[31] These adaptations ensure that standard crowbars remain adaptable across a range of tasks, from basic demolition to assembly adjustments, without deviating into highly specialized forms.^[11]

Specialized Pry Bars

Specialized pry bars are engineered variants of the traditional crowbar, optimized for precise or demanding tasks in construction, demolition, automotive repair, and industrial applications. Unlike standard crowbars, which feature a simple flat or gooseneck design for general prying, these specialized tools incorporate unique shapes, lengths, and features—such as tapered ends, rolling heads, or adjustable claws—to enhance leverage, minimize damage, or facilitate alignment in confined or heavy-duty scenarios.^[9]^[30] Alignment pry bars, also known as pinch bars, are long, straight tools with a hexagonal or round shaft, one chiseled end, and a tapered or pointed tip. They are primarily used to align bolt holes in heavy machinery, steel plates, or structural components during assembly or rigging, providing the leverage needed to position oversized parts without excessive force. These bars, often 18 to 36 inches in length, are forged from heat-treated alloy steel for durability under high stress.^[9]^[30]^[32] Molding pry bars, sometimes called trim pullers, feature a thin, wide prying end with dual nail slots and a forked claw, typically made from carbon steel for flexibility and strength. Designed for finish carpentry, they excel at removing baseboards, crown molding, or door casings with minimal surface damage, allowing clean separation from walls or frames. Their lightweight construction (often 8 to 12 inches long) and beveled edges reduce the risk of splintering wood during renovation projects.^[9]^[32] Gooseneck pry bars incorporate a curved "gooseneck" section near the claw end, combining a chisel tip for prying with a V-shaped nail puller for enhanced leverage in demolition. These tools, commonly 15 to 30 inches long, are suited for wrecking tasks like separating lumber or lifting floorboards, where the offset design provides better access in tight spaces compared to straight bars. Heavy-duty versions include a strike cap for safe hammering.^[9]^[30] Rolling head pry bars have a round shaft with a swivel or rolling head at one end and a pointed tip at the other, enabling smooth pivoting for repetitive prying actions. They are favored in automotive and machinery maintenance for aligning holes, positioning parts, or separating components like engine blocks, offering superior control and reduced hand fatigue over fixed-head designs. Typical lengths range from 12 to 24 inches, with the rolling mechanism forged for high-torque applications.^[9]^[30]^[32] Cat's claw pry bars are compact, lightweight tools with a curved, single-tooth claw and beveled edge, ideal for extracting headless or embedded nails from wood without marring surfaces. Measuring around 7 to 11 inches, they are commonly used in woodworking and furniture repair, where precision is paramount, and their slim profile allows insertion into narrow gaps for controlled removal.^[9] Digging pry bars, often straight and robust with dual ends—one pointed for penetration and one wedged for leverage—are specialized for landscaping and groundwork. They break through compacted soil, roots, or rocks to create post holes or trenches, with lengths up to 66 inches for deep applications in construction sites. These bars prioritize rigidity to withstand torsional forces during excavation.^[9]^[32] Adjustable pry bars represent an advanced variant, featuring an extendable shaft (up to 50 inches) and a pivoting or adjustable claw for versatile use in confined or oversized spaces. Employed in heavy industry for tasks like engine repositioning or large-scale demolition, they allow customization of reach and angle, though their added weight requires careful handling to maintain control.^[30] Railroad track pry bars, with a hexagonal shaft, 45-degree bent claw, and pointed end, are tailored for rail maintenance, used to lift or align tracks and ties during installation or repair. Their elongated design (often 36 inches or more) provides the necessary force for heavy rail work, emphasizing durability against repeated impacts in outdoor environments.^[30]

Applications and Uses

Primary Construction and Demolition

In construction and demolition, the crowbar serves as a fundamental lever tool, enabling workers to apply mechanical advantage for separating joined materials without excessive force. Its design, typically featuring a straight or curved bar with a forked or chisel-like end, allows for precise insertion into cracks or under objects to pry them apart, reducing the risk of structural collapse during controlled dismantling. For instance, crowbars are essential for removing nails from wooden framing or sheathing by leveraging the bar's fulcrum point against a stable surface, which multiplies the user's input force to extract fasteners efficiently.^[33]^[34] During demolition phases, crowbars facilitate the systematic breakdown of building components, such as lifting and separating floorboards, prying apart wall panels, or dismantling wooden structures like shelving and molding. The tool's hardened steel construction withstands the impacts and stresses of heavy-duty tasks, including gutting interiors or preparing sites for hazardous material removal prior to full teardown. Larger variants, often 24 inches or more in length, provide superior leverage for heavier applications like splitting beams or scraping away adhered materials such as floor tiles and wood paneling.^[25]^[35]^[34] In construction settings, crowbars support renovation and assembly by aiding in the installation or adjustment of materials, such as forcing entry into tight spaces for alignment or removing temporary supports. Their versatility extends to tasks requiring one-handed operation, like straightening bent components or pulling apart assembled units during modifications. Precision-ground edges on modern crowbars enhance penetration and control, minimizing damage to surrounding structures while maximizing efficiency in labor-intensive environments.^[24]^[25]

Improvised and Secondary Uses

Beyond its primary roles in construction and demolition, the crowbar serves various improvised and secondary applications across emergency response, gardening, automotive maintenance, and survival scenarios, leveraging its leverage and durability. In emergency rescue and firefighting operations, crowbars are employed to pry open locked doors, windows, and structural panels, facilitating access to trapped individuals or clearing paths for evacuation. For instance, they aid in breaking lock bars on secured entry points during urgent extractions. Heavy-duty variants are particularly useful for shifting debris or forcing apart jammed materials in disaster zones, such as collapsed buildings. Crowbars play a role in salvage and rescue tasks to help mitigate hazards like falling objects. Similarly, maritime safety guidelines recommend crowbars as part of essential firefighting and rescue kits on ships for rapid intervention. In gardening and landscaping, crowbars function as improvised digging aids, with the pointed end used to break compacted soil, loosen roots, or create holes for tasks like injecting fertilizer around tree roots without extensive digging. University of Minnesota Extension recommends them for softening soil prior to fertilization of evergreens by drilling targeted holes. They also assist in removing embedded rocks, stumps, or debris from garden beds, enhancing efficiency in soil preparation and plant relocation. For automotive repair, especially in heavy vehicle or off-road contexts, crowbars provide mechanical advantage for separating rusted or seized components, such as prying apart body panels or lifting engine parts during disassembly. In survival situations, crowbars double as multi-purpose levers for improvised tasks, such as barricading doors by wedging into frames or using their weight as a counterbalance for hoisting gear in rugged terrain. Prepping resources emphasize their value in post-disaster scenarios for breaching barriers or stabilizing loads against wind, underscoring their portability and robustness as a versatile field tool.

Safety, Maintenance, and Cultural Impact

Safety Considerations and Maintenance

When using a crowbar, personal protective equipment (PPE) is essential to mitigate risks such as flying debris, pinch injuries, or impacts; this includes safety glasses to protect against nail fragments or splinters, heavy-duty gloves to prevent cuts and improve grip, and a hard hat in overhead work environments.^[30]^[36] Selecting the appropriate crowbar size and type for the task is critical—using a tool that is too short or lightweight can lead to slippage or breakage, while one that is excessively long may cause loss of control; for instance, a shorter bar is preferable for precise nail removal, whereas a longer one suits heavy prying.^[37]^[38] Proper technique further enhances safety: apply force gradually and steadily to avoid sudden slips, maintain a firm footing and balanced stance to prevent falls, and keep hands clear of the working end and potential pinch points between the bar and material.^[39] Avoid striking crowbars with hardened steel hammers, as this can cause chipping or sparking; instead, use soft-faced mallets if additional force is needed.^[40] Common hazards include overexertion leading to musculoskeletal strain or the tool becoming a projectile if it slips, underscoring the need to inspect the work area for stability and clear obstacles before use.^[37] For maintenance, regularly clean the crowbar after use by wiping away dirt, debris, and moisture with a dry cloth to prevent corrosion, particularly on steel models exposed to damp conditions.^[41] Inspect the tool periodically for signs of wear, such as bends, cracks, or dull edges, and sharpen the chisel end if necessary using a file to ensure effective prying without excessive force.^[41] Lubricate any pivot points or joints sparingly with light machine oil to reduce friction and extend usability, but avoid over-application to prevent attraction of dust.^[42] Store crowbars in a dry, organized space—such as wall-mounted hooks or tool racks—to avoid bending under weight and minimize rust; if rust appears, remove it promptly with a wire brush and apply a thin coat of protective oil.^[43]^[44]

Depictions in Culture and Media

The crowbar, as a versatile hand tool, frequently appears in popular culture as an improvised weapon, symbolizing brute force, survival, and resourcefulness in high-stakes scenarios. Its sturdy design makes it a staple in depictions of demolition, combat, and apocalypse narratives, often repurposed from construction aid to defensive or offensive implement. This trope underscores themes of everyday objects turned lethal, reflecting real-world utility in dire situations.^[45] In video games, the crowbar achieves iconic status through the Half-Life series, where protagonist Gordon Freeman wields it as his primary melee weapon from the outset, using it to pry open doors, smash crates, and fend off alien foes. Introduced in the 1998 game Half-Life, the tool embodies Freeman's silent, resourceful scientist persona and has become a cultural emblem of the franchise, referenced in merchandise, fan art, and even Valve's own announcements. Its absence in Half-Life: Alyx (2020) was deliberate, as developers favored gravity gloves to suit the VR mechanics and Alyx Vance's character. Similar uses appear in zombie survival titles like Left 4 Dead 2 (2009), where players select the crowbar for close-quarters combat against infected hordes, and Dead Rising 2 (2010), as one of numerous improvised melee options in an open-world outbreak setting.^[46]^[47]^[45] Comic books portray the crowbar in visceral, traumatic scenes, most notoriously in DC's Batman: A Death in the Family (1988), where the Joker brutally assaults Jason Todd (the second Robin) with a crowbar in a warehouse, beating him severely before detonating a bomb that seemingly kills the young hero. This event, detailed in Batman #427, profoundly impacts the Batman mythos, influencing subsequent storylines like Red Hood's resurrection and revenge arcs. The crowbar's role here amplifies the Joker's chaotic sadism, with the scene's brutality determined partly by fan vote via a 900-number poll. In Marvel Comics, the Wrecker employs a magically enchanted crowbar bestowed by Loki, channeling Asgardian power to demolish structures and battle heroes as part of the Wrecking Crew.^[48]^[45] Films often depict the crowbar in horror and action genres, particularly zombie apocalypses, where it serves as a practical survival tool. In 28 Days Later (2002), protagonist Jim uses a crowbar to bludgeon infected soldiers in a climactic confrontation, highlighting its effectiveness in desperate hand-to-hand fights. The 2004 remake of Dawn of the Dead features survivor Michael wielding one to breach mall entrances and combat zombies, emphasizing group improvisation amid societal collapse. Earlier, in Night of the Living Dead (1968 and 1990 remakes), character Ben employs a tire iron variant of the crowbar to dispatch undead threats, establishing it as a foundational element in zombie cinema. A low-budget slasher titled Crowbar (2010) centers the tool as the killer's signature weapon, though critically panned for repetitive kills.^[45]^[49]^[50] On television, the crowbar appears in post-apocalyptic and superhero contexts. In The Walking Dead, Negan adopts it as a secondary weapon after his barbed-wire bat Lucille is destroyed, using it in brutal melee encounters during the series' later seasons to maintain his intimidating presence. An animated nod occurs in Robot Chicken's "Iron Man Cheney" sketch (2005), where Dick Cheney humorously dispatches a terrorist with a crowbar, dubbing it the "Cheney Special" in a satirical take on political violence.^[51] In literature, the crowbar is recommended as an essential survival item in Max Brooks' The Zombie Survival Guide (2003), praised for its dual role in prying barricades and delivering fatal skull-crushing blows against the undead, influencing real-world prepper culture and media adaptations. Its practical depiction reinforces themes of preparedness in speculative fiction.^[45]

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Production process of crowbar and its die - Google Patents
Free forging process need heat 4 times, could forge into crowbar, and adopts the rod forging process, only needs heating to get final product for 2 times ...Missing: industrial | Show results with:industrial
[29]
Project report for Crowbar Manufacturing - Finline
Rating 4.8 (26,513) Simple process: The crowbar production process involves forging, heat treatment, grinding, coating, and packing. Labor cost is not that high (around 15-20 ...
[30]
A Guide to Pry Bars - Gray Tools
Apr 29, 2020 · One of the first tools developed by humankind, the pry bar has been established as a versatile and necessary tool.Missing: history | Show results with:history
[31]
https://jcblhandtools.com/blog/how-to-choose-the-right-crow-bar-size-type-guide/
[32]
How to Choose the Right Crow Bar: Size & Type Guide
Sep 16, 2025 · Forged Alloy Steel is the gold standard for strength and durability. · JCBL Hand Tools uses heat-treated alloy steel to ensure the bar maintains ...
[33]
The Beginners' Guide on the 5 Major Categories of Crowbar
### Summary of Crowbar Categories
[34]
Wrecking Bar, 24-Inch - 66095 - Klein Tools
Klein Tool's Wrecking Bars are forged from high quality durable carbon steel and combine versatility and ergonomics for the most demanding professional ...
[35]
[PDF] Heavy Forged Hand Tools From China - GovInfo
Aug 10, 2011 · Bars are used for demolition, scraping, lifting, or prying apart floor tile, wood paneling, nailed wood items, wood molding, and/or removing ...
[36]
[PDF] Recommended Management Practices for the Removal of ...
Oct 7, 1997 · Claw hammer or crowbar. Large box ... The benefits of removing hazardous building components from structures prior to demolition are many.
[37]
https://www.worksafebc.com/resources/health-safety/information-sheets/reducing-risk-injury-commercial-trucking-pry-bars?lang=en&direct
[38]
[PDF] Reducing the risk of injury in commercial trucking Pry bars
If it's too long, the bar will be awkward to handle. Using a pry bar with a knurled (non-slip) grip will help keep your hands in place.
[39]
https://crateclub.com/blogs/loadout/essential-pry-bar-safety-tips-for-every-user
[40]
Essential Pry Bar Safety Tips for Every User - Crate Club
Use PPE, select the right pry bar, create a stable environment, apply gradual force, and keep hands away from the striking zone.Introduction · The Importance of Personal... · Selecting the Right Pry Bar for...
[41]
Tool Safety - UNF
To prevent crowbars and wrecking bars from slipping, a block of wood can be placed under the bar. This technique will also provide more leverage. Case hardened ...<|separator|>
[42]
How to maintain a pry bar for durability? - EngiMarket
Jul 3, 2024 · Pry Bar Care Tips · Keep your pry bar clean and dry after each use to prevent rust · Regularly inspect the pry bar for any signs of wear or damage ...
[43]
Maintaining Your Pry Bar: Tips for Long-Lasting Performance - HUGO
Aug 23, 2023 · Apply a few drops of oil or lubricant to the pivot point and other movable parts of your pry bar. This will help reduce friction and make it ...
[44]
Large Crowbars Care and Maintenance - Wonkee Donkee Tools
1. Avoid bending your bar. If you suspect you may be putting too great a strain on the shaft, stop, and switch to a heavier duty tool. · 2. Avoid prolonged ...Missing: tips | Show results with:tips
[45]
Keeping Your Crowbar Safe: Tips for Storage, Maintenance, and ...
Sep 20, 2023 · Here are quick tips: Store the crowbars in a dry environment or location. Make sure that there isn't any moisture, or it can lead to corrosion and rusting.
[46]
Crowbar Combatant - All The Tropes
A type of Improvised Weapon. Crowbars tend to be pretty popular - they are heavy enough to be used as clubs and have two bladed points that can do some ...
[47]
Half-Life: How Gordon Freeman's Crowbar Became One Of ... - CBR
Dec 1, 2023 · The crowbar is fun, effective, and more than simply a weapon. Perhaps its most significant use is to represent a major turning point in Half- ...
[48]
The crowbar caused too many problems to be included in Half-Life
Mar 25, 2020 · According to Valve, crowbars are more of a Gordon Freeman thing while devices like the gravity gloves seem more unique and fit to a character ...
[49]
Joker's Crowbar (Object) - Comic Vine
Sep 22, 2024 · The Joker beats Jason Todd with his crowbar, ultimately leaving him half-dead on the warehouse floor. This is a reenactment of Robin's death ...
[50]
The Tire Iron Crowbar | Night Of The Living Dead (Movie) Wiki
The Tire Iron Crowbar is a weapon featured in both Night of the Living Dead 1968 and Night of the Living Dead 1990. It is used by Ben to kill zombies and save ...
[51]
Film Review: Crowbar (2010) | HNN - Horror News
For real, his only weapon is a crowbar, so everyone dies in the same fashion. Perhaps, this would have been fun in a gory sort of way, but the use of ...
[52]
Crowbar | Walking Dead Wiki - Fandom
A crowbar is a long metal tool. It is the preferred weapon of Negan Smith following the destruction of Lucille.