A digging bar is a long, straight metal bar used for various purposes, including as a post hole digger, to break up or loosen hard or compacted materials such as soil, rock, concrete and ice or as a lever to move objects. Known by other names depending on locale, structural features and intended purpose such as a hop bar or crowbar in Britain, Australia and New Zealand, [1] and slate bar, shale bar, spud bar, pinch point bar or San Angelo bar in North America, or just a bar. In Canada, it is often called pry bar. In Hawaii, a similar, traditional wooden device known as an ‘o‘o stick is used as a digging bar in groundbreaking ceremonies. [2] Not to be confused with a curved crowbar, which is designed to provide leverage rather than to dig.
Common uses of digging bars include breaking up clay, concrete, frozen ground, and other hard materials, moving or breaking up tree roots and obstacles, and making holes in the ground for fence posts. They are often used where space would not allow the use of a pickaxe.
The ends of a digging bar are shaped for various purposes. [3] Typically, each end has a different shape so as to provide two different tool functions in one tool. Common end shapes include:
Bars are typically 5 to 6 ft (1.5 to 1.8 m) long and weigh 15 to 23 lb (6.8 to 10.4 kg). They are usually made entirely of cylindrical or hexagonal forged steel with a diameter of approximately 1 in (2.5 cm). Chisel and wedge ends typically have a blade width measuring 1 to 3 in (3 to 8 cm). Blunt ends typically have a diameter of 2 to 3 in (5 to 8 cm).
Log-peeling spuds are used to remove the bark from logs. These spuds typically have a wooden or steel handle of length 18 in (0.5 m) to over 6 ft (1.8 m). This tool is also called a Bark spud or a barking iron. [4]
A hop bar (also Hop pitcher) is used to make holes in the ground for hop poles, 2 m (79 in) or more long with a heavy, bulbous spike at the digging end. [5]
Fishing through holes in ice is common in many parts of the world. One of the earliest methods of cutting these holes was to use a device variously known as an ice spud or ice chisel. Many chisel variations exist, including jagged teeth, skewed edges, and different grind angles and chisel widths. Early ice spuds (before about 1925) often had wooden handles and a steel chisel fixed with a tang and collar or socket, similar to a carpenter's chisel. Ice spuds are still carried by many ice fishermen as a means to test ice thickness and safety; a single forceful thrust of the ice spud will often penetrate unsafe ice.
A lining bar is used to shift the alignment of railroad tracks, to manipulate some types of railroad track jacks, to "nip up" or lift ties and rails, and as a digging tool. Lining bars have a tapered form. They often have a square cross section between one and 1-1/2 inches at one end. They may have a pyramidal, wedge, or pinch point. They transition to a tapered round cross section 12 to 18 inches from the point. The handle end may terminate in a ball or may be cut off squarely at 5/8 to 3/4 inch diameter. They are made of forged steel and may be from five to six feet long. Lining bars may also be called jack bars, jack handles, or crowbars in North American railroad jargon.
A spud bar has a chisel at one end that is intended for removing material through a chipping or shaving action. In the British Isles these typically have a narrow, unsharpened chisel point at one end and a point at the other end, with diameters up to about 1.5 in (4 cm). Some have plastic grips on the shaft and some have wider chisel ends, or "rakes", for specific jobs such as removing old shingles and tar paper.
An adze or adz is an ancient and versatile cutting tool similar to an axe but with the cutting edge perpendicular to the handle rather than parallel. Adzes have been used since the Stone Age. They are used for smoothing or carving wood in hand woodworking, and as a hoe for agriculture and horticulture. Two basic forms of an adze are the hand adze —a short-handled tool swung with one hand—and the foot adze (hoe)—a long-handled tool capable of powerful swings using both hands, the cutting edge usually striking at foot or shin level. A similar tool is called a mattock, which differs by having two blades, one perpendicular to the handle and one parallel.
A chisel is a wedged hand tool with a characteristically shaped cutting edge on the end of its blade, for carving or cutting a hard material. The tool can be used by hand, struck with a mallet, or applied with mechanical power. The handle and blade of some types of chisel are made of metal or wood with a sharp edge in it.
A blacksmith is a metalsmith who creates objects primarily from wrought iron or steel, but sometimes from other metals, by forging the metal, using tools to hammer, bend, and cut. Blacksmiths produce objects such as gates, grilles, railings, light fixtures, furniture, sculpture, tools, agricultural implements, decorative and religious items, cooking utensils, and weapons. There was an historical distinction between the heavy work of the blacksmith and the more delicate operation of a whitesmith, who usually worked in gold, silver, pewter, or the finishing steps of fine steel. The place where a blacksmith works is called variously a smithy, a forge or a blacksmith's shop.
A tire iron is a specialized metal or plastic tool used in working with tires. Tire irons have not been in common use for automobile tires since the shift to the use of tubeless tires in the late 1950s.
A chainsaw is a portable handheld power saw that cuts with a set of teeth attached to a rotating chain driven along a guide bar.
A drill bit is a cutting tool used in a drill to remove material to create holes, almost always of circular cross-section. Drill bits come in many sizes and shapes and can create different kinds of holes in many different materials. In order to create holes drill bits are usually attached to a drill, which powers them to cut through the workpiece, typically by rotation. The drill will grasp the upper end of a bit called the shank in the chuck.
A Halligan bar is a forcible entry tool used by firefighters.
A kunai is a Japanese tool thought to be originally derived from the masonry trowel. The two widely recognized kinds are the short kunai and the big kunai. Although a basic tool, the kunai, in the hands of a martial arts expert, could be used as a multi-functional weapon. The kunai is commonly associated with the ninja, who in folklore use them to climb walls.
A reamer is a type of rotary cutting tool used in metalworking. Precision reamers are designed to enlarge the size of a previously formed hole by a small amount but with a high degree of accuracy to leave smooth sides. There are also non-precision reamers which are used for more basic enlargement of holes or for removing burrs. The process of enlarging the hole is called reaming. There are many different types of reamer and they may be designed for use as a hand tool or in a machine tool, such as a milling machine or drill press.
A crowbar is a tool with a curved end used for prying objects apart.
A pickaxe, pick-axe, or pick is a generally T-shaped hand tool used for prying. Its head is typically metal, attached perpendicularly to a longer handle, traditionally made of wood, occasionally metal, and increasingly fiberglass.
Cave digging is the practice of enlarging openings of undiscovered caves to allow entry. Cave digging usually begins with a survey of mountains and valleys in karst topography searching for new caves, with the goal of creating accessible entrances. Whether outside an inaccessible cave or inside an already accessible cave, when spaces are evident on the other side of blocked passages, many strategies can be used to widen entrances from rearranging rocks to using explosives.
A kitchen knife is any knife that is intended to be used in food preparation. While much of this work can be accomplished with a few general-purpose knives – notably a large chef's knife, a tough cleaver, a small paring knife and some sort of serrated blade – there are also many specialized knives that are designed for specific tasks. Kitchen knives can be made from several different materials.
This is a glossary of firefighting equipment.
A crowbar, also called a wrecking bar, pry bar or prybar, pinch-bar, or occasionally a prise bar or prisebar, colloquially gooseneck, or pig bar, or in Australia a jemmy, is a lever consisting of a metal bar with a single curved end and flattened points, used to force two objects apart or gain mechanical advantage in lifting; often the curved end has a notch for removing nails.
Japanese carpentry was developed more than a millennium ago that is known for its ability to create everything from temples to houses to tea houses to furniture by wood with the use of few nails.
Knife sharpening is the process of making a knife or similar tool sharp by grinding against a hard, rough surface, typically a stone, or a flexible surface with hard particles, such as sandpaper. Additionally, a leather razor strop, or strop, is often used to straighten and polish an edge.
An axe is an implement that has been used for millennia to shape, split, and cut wood, to harvest timber, as a weapon, and as a ceremonial or heraldic symbol. The axe has many forms and specialised uses but generally consists of an axe head with a handle, also called a haft or a helve.
An ironworker is a tradesman who works in the iron-working industry. Ironworkers assemble the structural framework in accordance with engineered drawings and install the metal support pieces for new buildings. They also repair and renovate old structures using reinforced concrete and steel. Ironworkers may work on factories, steel mills, and utility plants.
Plug and feather, also known as plugs and wedges, feather and wedges, wedges and shims, pins and feathers and feather and tare, refers to a technique and a three-piece tool set used to split stone.