writing
Writing is a medium of human communication which involves the representation of a language through a system of physically Epigraphy, inscribed, Printing press, mechanically transferred, or Word processor, digitally represented Symbols (semiot ...
or
drawing
Drawing is a form of visual art in which an artist uses instruments to mark paper or other two-dimensional surface. Drawing instruments include graphite pencils, pen and ink, various kinds of paints, inked brushes, colored pencils, crayons, ...
implement with a solid
pigment
A pigment is a colored material that is completely or nearly insoluble in water. In contrast, dyes are typically soluble, at least at some stage in their use. Generally dyes are often organic compounds whereas pigments are often inorganic compo ...
core in a protective casing that reduces the risk of core breakage, and keeps it from marking the user's hand.
Pencils create marks by physical abrasion, leaving a trail of solid core material that adheres to a sheet of
paper
Paper is a thin sheet material produced by mechanically or chemically processing cellulose fibres derived from wood, rags, grasses or other vegetable sources in water, draining the water through fine mesh leaving the fibre evenly distributed ...
or other surface. They are distinct from
pen
A pen is a common writing instrument that applies ink to a surface, usually paper, for writing or drawing. Early pens such as reed pens, quill pens, dip pens and ruling pens held a small amount of ink on a nib or in a small void or cavity wh ...
s, which dispense liquid or gel
ink
Ink is a gel, sol, or solution that contains at least one colorant, such as a dye or pigment, and is used to color a surface to produce an image, text, or design. Ink is used for drawing or writing with a pen, brush, reed pen, or quill. Thicker ...
onto the marked surface.
Most pencil cores are made of
graphite
Graphite () is a crystalline form of the element carbon. It consists of stacked layers of graphene. Graphite occurs naturally and is the most stable form of carbon under standard conditions. Synthetic and natural graphite are consumed on large ...
powder mixed with a
clay
Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4).
Clays develop plasticity when wet, due to a molecular film of water surrounding the clay par ...
binder.
Graphite pencil
A graphite pencil, also called a lead pencil, is a type of pencil in which a thin graphite core is embedded in a shell of other material. The pencil shell is typically wooden, but can be made of plastic or recycled paper.
History
A large deposi ...
s (traditionally known as "lead pencils") produce grey or black marks that are easily erased, but otherwise resistant to
moisture
Moisture is the presence of a liquid, especially water, often in trace amounts. Small amounts of water may be found, for example, in the air (humidity), in foods, and in some commercial products. Moisture also refers to the amount of water vapo ...
, most chemicals,
ultraviolet radiation
Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nm (with a corresponding frequency around 30 PHz) to 400 nm (750 THz), shorter than that of visible light, but longer than X-rays. UV radiation i ...
and natural aging. Other types of pencil cores, such as those of charcoal, are mainly used for drawing and sketching.
Coloured pencils
A colored pencil (American English), coloured pencil (Commonwealth English), pencil crayon, or coloured/colouring lead (Canadian English, Newfoundland English) is an art medium constructed of a narrow, pigmented core encased in a wooden cylindric ...
are sometimes used by teachers or editors to correct submitted texts, but are typically regarded as art supplies, especially those with cores made from wax-based binders that tend to smear when erasers are applied to them.
Grease pencil
The grease pencil, a wax writing tool also known as a wax pencil, china marker, or chinagraph pencil (especially in the United Kingdom), is a writing implement made of hardened colored wax and is useful for marking on hard, glossy non-porous surf ...
s have a softer, oily core that can leave marks on smooth surfaces such as
glass
Glass is a non-crystalline, often transparent, amorphous solid that has widespread practical, technological, and decorative use in, for example, window panes, tableware, and optics. Glass is most often formed by rapid cooling (quenching) of ...
or
porcelain
Porcelain () is a ceramic material made by heating substances, generally including materials such as kaolinite, in a kiln to temperatures between . The strength and translucence of porcelain, relative to other types of pottery, arises main ...
.
The most common pencil casing is thin wood, usually
hexagon
In geometry, a hexagon (from Greek , , meaning "six", and , , meaning "corner, angle") is a six-sided polygon. The total of the internal angles of any simple (non-self-intersecting) hexagon is 720°.
Regular hexagon
A '' regular hexagon'' has ...
triangular
A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices ''A'', ''B'', and ''C'' is denoted \triangle ABC.
In Euclidean geometry, any three points, when non- collinea ...
, permanently bonded to the core. Casings may be of other materials, such as plastic or paper. To use the pencil, the casing must be carved or peeled off to expose the working end of the core as a sharp point.
Mechanical pencil
A mechanical pencil, also clutch pencil, is a pencil with a replaceable and mechanically extendable solid pigment core called a "lead" . The lead, often made of graphite, is not bonded to the outer casing, and can be mechanically extended as its ...
s have more elaborate casings which are not bonded to the core; instead, they support separate, mobile pigment cores that can be extended or retracted (usually through the casing's tip) as needed. These casings can be reloaded with new cores (usually graphite) as the previous ones are exhausted.
History
Camel's hair
''Pencil'', from
Old French
Old French (, , ; Modern French: ) was the language spoken in most of the northern half of France from approximately the 8th to the 14th centuries. Rather than a unified language, Old French was a linkage of Romance dialects, mutually intelligib ...
''pincel'', from
Latin
Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...
a "little tail" (see ''penis''; ''pincellus'' is Latin from the post-classical period) originally referred to an artist's fine brush of camel hair, also used for writing before modern lead or chalk pencils.
Though the
archetypal
The concept of an archetype (; ) appears in areas relating to behavior, historical psychology, and literary analysis.
An archetype can be any of the following:
# a statement, pattern of behavior, prototype, "first" form, or a main model that o ...
pencil was an artist's brush, the stylus, a thin metal stick used for scratching in
papyrus
Papyrus ( ) is a material similar to thick paper that was used in ancient times as a writing surface. It was made from the pith of the papyrus plant, '' Cyperus papyrus'', a wetland sedge. ''Papyrus'' (plural: ''papyri'') can also refer to a ...
or
wax tablet
A wax tablet is a tablet made of wood and covered with a layer of wax, often linked loosely to a cover tablet, as a "double-leaved" diptych. It was used as a reusable and portable writing surface in Antiquity and throughout the Middle Ages. C ...
s, was used extensively by the
Romans
Roman or Romans most often refers to:
*Rome, the capital city of Italy
* Ancient Rome, Roman civilization from 8th century BC to 5th century AD
*Roman people, the people of ancient Rome
*''Epistle to the Romans'', shortened to ''Romans'', a lette ...
and for
palm-leaf manuscript
Palm-leaf manuscripts are manuscripts made out of dried palm leaves. Palm leaves were used as writing materials in the Indian subcontinent and in Southeast Asia reportedly dating back to the 5th century BCE. Their use began in South Asia and ...
s.
Graphite deposit discoveries
As a technique for drawing, the closest predecessor to the pencil was
silverpoint
Silverpoint (one of several types of metalpoint) is a traditional drawing technique first used by medieval scribes on manuscripts.
History
A silverpoint drawing is made by dragging a silver rod or wire across a surface, often prepared with gesso ...
or leadpoint until in 1565 (some sources say as early as 1500), a large deposit of
graphite
Graphite () is a crystalline form of the element carbon. It consists of stacked layers of graphene. Graphite occurs naturally and is the most stable form of carbon under standard conditions. Synthetic and natural graphite are consumed on large ...
was discovered on the approach to
Grey Knotts
Grey Knotts is a fell in the English Lake District. It is situated one kilometre south of the B5289 road as it crosses the Honister Pass. It is well seen from mid- Borrowdale as it rises above Seatoller. Grey Knotts reaches a height of 697 ...
Cumbria, England
Cumbria ( ) is a ceremonial and non-metropolitan county in North West England, bordering Scotland. The county and Cumbria County Council, its local government, came into existence in 1974 after the passage of the Local Government Act 1972. Cumb ...
.Petroski, 1990, pp. 168, 358 This particular deposit of graphite was extremely pure and solid, and it could easily be sawn into sticks. It remains the only large-scale deposit of graphite ever found in this solid form.
Chemistry
Chemistry is the science, scientific study of the properties and behavior of matter. It is a natural science that covers the Chemical element, elements that make up matter to the chemical compound, compounds made of atoms, molecules and ions ...
was in its infancy and the substance was thought to be a form of
lead
Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cu ...
. Consequently, it was called ''plumbago'' (Latin for "lead
ore
Ore is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated and sold at a profit.Encyclopædia Britannica. "Ore". Encyclopædia Britannica Online. Retrieved 7 Apr ...
"). Because the pencil core is still referred to as "lead", or "a lead", many people have the misconception that the graphite in the pencil is lead, and the black core of pencils is still referred to as ''lead'', even though it never contained the element lead. The words for pencil in German (''Bleistift''), Irish (''peann luaidhe''), Arabic (قلم رصاص ''qalam raṣāṣ''), and some other languages literally mean ''lead pen''.
The value of graphite would soon be realised to be enormous, mainly because it could be used to line the moulds for cannonballs; the mines were taken over by
the Crown
The Crown is the state in all its aspects within the jurisprudence of the Commonwealth realms and their subdivisions (such as the Crown Dependencies, overseas territories, provinces, or states). Legally ill-defined, the term has different ...
and were guarded. When sufficient stores of graphite had been accumulated, the mines were flooded to prevent theft until more was required.
The usefulness of graphite for pencils was discovered as well, but graphite for pencils had to be smuggled. Because graphite is soft, it requires some form of
encasement
Encasement is the coating over, covering or "encasing" of all building components, interior and exterior. This includes all roofing and toxic hazards materials, such as asbestos, lead-based paint, mold/mildew and other harmful substances, found ...
. Graphite sticks were initially wrapped in string or
sheepskin
Sheepskin is the hide of a sheep, sometimes also called lambskin. Unlike common leather, sheepskin is tanned with the fleece intact, as in a pelt.Delbridge, Arthur, "The Macquarie Dictionary", 2nd ed., Macquarie Library, North Ryde, 1991 Uses
...
for stability. England would enjoy a monopoly on the production of pencils until a method of reconstituting the graphite powder was found in 1662 in Germany. However, the distinctively square English pencils continued to be made with sticks cut from natural graphite into the 1860s. The town of Keswick, near the original findings of block graphite, still manufactures pencils, the factory also being the location of the
Derwent Pencil Museum
The Derwent Pencil Museum is in Keswick, in the north-west of England.
History
The museum opened in 1981 and is home to one of the biggest colouring pencils in the world, the idea of technical manager Barbara Murray. The yellow pencil was com ...
. The meaning of "graphite writing implement" apparently evolved late in the 16th century.
Wood encasement
Around 1560, an Italian couple named Simonio and Lyndiana Bernacotti made what are likely the first blueprints for the modern, wood-encased
carpentry pencil
A carpenter pencil (carpentry pencil, carpenter's pencil) is a pencil that has a body with a rectangular or elliptical cross-section to prevent it from rolling away. Carpenter pencils are easier to grip than standard pencils, because they have a la ...
. Their version was a flat, oval, more compact type of pencil. Their concept involved the hollowing out of a stick of juniper wood. Shortly thereafter, a superior technique was discovered: two wooden halves were carved, a graphite stick inserted, and the halves then glued together—essentially the same method in use to this day.
Graphite powder and clay
The first attempt to manufacture graphite sticks from powdered graphite was in
Nuremberg
Nuremberg ( ; german: link=no, Nürnberg ; in the local East Franconian dialect: ''Nämberch'' ) is the second-largest city of the German state of Bavaria after its capital Munich, and its 518,370 (2019) inhabitants make it the 14th-largest ...
, Germany, in 1662. It used a mixture of graphite,
sulphur
Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula ...
, and
antimony
Antimony is a chemical element with the symbol Sb (from la, stibium) and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb2S3). Antimony compounds have been known since ancient t ...
.
English and German pencils were not available to the French during the
Napoleonic Wars
The Napoleonic Wars (1803–1815) were a series of major global conflicts pitting the French Empire and its allies, led by Napoleon I, against a fluctuating array of European states formed into various coalitions. It produced a period of Fren ...
; France, under naval blockade imposed by Great Britain, was unable to import the pure graphite sticks from the British Grey Knotts mines – the only known source in the world. France was also unable to import the inferior German graphite pencil substitute. It took the efforts of an officer in
Napoleon
Napoleon Bonaparte ; it, Napoleone Bonaparte, ; co, Napulione Buonaparte. (born Napoleone Buonaparte; 15 August 1769 – 5 May 1821), later known by his regnal name Napoleon I, was a French military commander and political leader who ...
's army to change this. In 1795,
Nicolas-Jacques Conté
Nicolas-Jacques Conté (4 August 1755 – 6 December 1805) was a French painter, balloonist, army officer, and inventor of the modern pencil.
He was born at Saint-Céneri-près-Sées (now Aunou-sur-Orne) in Normandy and distinguished himself for ...
discovered a method of mixing powdered graphite with
clay
Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4).
Clays develop plasticity when wet, due to a molecular film of water surrounding the clay par ...
and forming the mixture into rods that were then fired in a
kiln
A kiln is a thermally insulated chamber, a type of oven, that produces temperatures sufficient to complete some process, such as hardening, drying, or chemical changes. Kilns have been used for millennia to turn objects made from clay int ...
. By varying the ratio of graphite to clay, the hardness of the graphite rod could also be varied. This method of manufacture, which had been earlier discovered by the Austrian
Joseph Hardtmuth
Joseph Hardtmuth (13 February 1758, Asparn an der Zaya – 23 May 1816, Vienna) was an Austrian architect, inventor and entrepreneur.
Inventions
In 1789, he invented a new kind of earthenware with a lead-free glaze for tableware production, th ...
, the founder of the
Koh-I-Noor
The Koh-i-Noor ( ; from ), also spelled Kohinoor and Koh-i-Nur, is one of the largest cut diamonds in the world, weighing . It is part of the Crown Jewels of the United Kingdom. The diamond is currently set in the Crown of Queen Elizabeth The ...
in 1790, remains in use. In 1802, the production of graphite leads from graphite and clay was patented by the
Koh-I-Noor
The Koh-i-Noor ( ; from ), also spelled Kohinoor and Koh-i-Nur, is one of the largest cut diamonds in the world, weighing . It is part of the Crown Jewels of the United Kingdom. The diamond is currently set in the Crown of Queen Elizabeth The ...
company in Vienna.
In England, pencils continued to be made from whole sawn graphite.
Henry Bessemer
Sir Henry Bessemer (19 January 1813 – 15 March 1898) was an English inventor, whose steel-making process would become the most important technique for making steel in the nineteenth century for almost one hundred years from 1856 to 1950. He ...
's first successful invention (1838) was a method of compressing graphite powder into solid graphite thus allowing the waste from sawing to be reused.
United States
American colonists imported pencils from Europe until after the
American Revolution
The American Revolution was an ideological and political revolution that occurred in British America between 1765 and 1791. The Americans in the Thirteen Colonies formed independent states that defeated the British in the American Revolut ...
.
Benjamin Franklin
Benjamin Franklin ( April 17, 1790) was an American polymath who was active as a writer, scientist, inventor, statesman, diplomat, printer, publisher, and political philosopher. Encyclopædia Britannica, Wood, 2021 Among the leading inte ...
advertised pencils for sale in his ''
Pennsylvania Gazette
''The Pennsylvania Gazette'' was one of the United States' most prominent newspapers from 1728 until 1800. In the several years leading up to the American Revolution the paper served as a voice for colonial opposition to British colonial rule, ...
'' in 1729, and
George Washington
George Washington (February 22, 1732, 1799) was an American military officer, statesman, and Founding Father who served as the first president of the United States from 1789 to 1797. Appointed by the Continental Congress as commander of th ...
Concord, Massachusetts
Concord () is a town in Middlesex County, Massachusetts, in the United States. At the 2020 census, the town population was 18,491. The United States Census Bureau considers Concord part of Greater Boston. The town center is near where the conflu ...
, made the first American
wood
Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin th ...
pencils in 1812. This was not the only pencil-making occurring in Concord. According to
Henry Petroski
Henry Petroski (February 6, 1942) is an American engineer specializing in failure analysis. A professor both of civil engineering and history at Duke University, he is also a prolific author. Petroski has written over a dozen books – beginning ...
Henry David Thoreau
Henry David Thoreau (July 12, 1817May 6, 1862) was an American naturalist, essayist, poet, and philosopher. A leading Transcendentalism, transcendentalist, he is best known for his book ''Walden'', a reflection upon simple living in natural su ...
discovered how to make a good pencil out of inferior graphite using clay as the binder; this invention was prompted by his father's pencil factory in Concord, which employed graphite found in
New Hampshire
New Hampshire is a U.S. state, state in the New England region of the northeastern United States. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec t ...
in 1821 by Charles Dunbar.
Munroe's method of making pencils was painstakingly slow, and in the neighbouring town of
Acton Acton may refer to:
Places Antarctica
* Mount Acton
Australia
* Acton, Australian Capital Territory, a suburb of Canberra
* Acton, Tasmania, a suburb of Burnie
* Acton Park, Tasmania, a suburb of Hobart, Tasmania, formerly known as Acton
Canada ...
, a pencil mill owner named Ebenezer Wood set out to automate the process at his own pencil mill located at Nashoba Brook. He used the first circular saw in pencil production. He constructed the first of the hexagon- and octagon-shaped wooden casings. Ebenezer did not patent his invention and shared his techniques with anyone. One of those was
Eberhard Faber The Eberhard Faber Pencil Company was started by John Eberhard Faber in 1861 in Midtown Manhattan, New York City by the East River at the foot of 42nd Street, on the present site of the United Nations Headquarters. After an 1872 fire, operations mo ...
, which built a factory in New York and became the leader in pencil production.
Joseph Dixon, an inventor and entrepreneur involved with the
Tantiusques
Tantiusques ("Tant-E-oos-kwiss") is a open space reservation and historic site registered with the National Register of Historic Places. The reservation is located in Sturbridge, Massachusetts, and is owned and managed by The Trustees of Rese ...
graphite mine in
Sturbridge, Massachusetts
Sturbridge is a town in Worcester County, Massachusetts, United States. It is home to Old Sturbridge Village living history museum and other sites of historical interest such as Tantiusques.
The population was 9,867 at the 2020 census, with mo ...
, developed a means to
mass-produce
Mass production, also known as flow production or continuous production, is the production of substantial amounts of standardized products in a constant flow, including and especially on assembly lines. Together with job production and batch ...
pencils. By 1870, The
Joseph Dixon Crucible Company
Joseph Dixon (1799–1869) was an inventor, entrepreneur and the founder of what became the Dixon Ticonderoga Company, a well-known manufacturer of pencils in the United States.
His fascination with new technologies led to many innovations such as ...
was the world's largest dealer and consumer of graphite and later became the contemporary
Dixon Ticonderoga
The Dixon Ticonderoga Company () is an office and art supplies maker from the United States, with headquarters in Heathrow, Florida. The company offers a number of brands, with one of the most well-known being ''Ticonderoga'': the yellow No. 2 penc ...
pencil and art supplies company.
By the end of the 19th century, over 240,000 pencils were used each day in the US. The favoured timber for pencils was Red Cedar as it was
aroma
An odor (American English) or odour ( Commonwealth English; see spelling differences) is caused by one or more volatilized chemical compounds that are generally found in low concentrations that humans and animals can perceive via their se ...
tic and did not splinter when sharpened. In the early 20th century supplies of Red Cedar were dwindling so that pencil manufacturers were forced to recycle the wood from cedar fences and barns to maintain supply.
One effect of this was that "during World War II rotary pencil sharpeners were outlawed in Britain because they wasted so much scarce lead and wood, and pencils had to be sharpened in the more conservative manner – with knives."
It was soon discovered that
incense cedar
''Calocedrus'', the incense cedar (alternatively spelled incense-cedar), is a genus of coniferous trees in the cypress family Cupressaceae first described as a genus in 1873. It is native to eastern Asia and western North America.
The generi ...
, when dyed and perfumed to resemble Red Cedar, was a suitable alternative. Most pencils today are made from this timber, which is grown in managed forests. Over 14 billion pencils are manufactured worldwide annually. Less popular alternatives to cedar include
basswood
''Tilia americana'' is a species of tree in the family Malvaceae, native to eastern North America, from southeast Manitoba east to New Brunswick, southwest to northeast Oklahoma, southeast to South Carolina, and west along the Niobrara River to ...
and
alder
Alders are trees comprising the genus ''Alnus'' in the birch family Betulaceae. The genus comprises about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few sp ...
.
In Southeast Asia, the wood
Jelutong
Jelutong is a suburb of George Town in Penang, Malaysia. Located south of the Pinang River, Jelutong has been inhabited since as early as the late 18th century, when traders from Aceh and India settled around the area.
It was once notorious ...
may be used to create pencils (though the use of this rainforest species is controversial). Environmentalists prefer the use of
Pulai
Pulai is a suburban area in the city of Iskandar Puteri, Mukim Pulai, district Johor Bahru, state of Johor, Malaysia
Name
Pulai was named after Pulai River.http://jpbd.johor.gov.my/images/jpbd_DokumenTerbitan/Handbook.pdf Pulai is a speci ...
– another wood native to the region in pencil manufacturing.
Eraser attachment
On March 30, 1858,
Hymen Lipman Hymen L. Lipman (March 20, 1817 – November 4, 1893) is credited with registering the first patent for a pencil with an attached eraser on March 30, 1858 ().
Hymen L. Lipman was born March 20, 1817, in Kingston, Jamaica, to English parents. H ...
received the first
patent
A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention."A p ...
for attaching an
eraser
An eraser (also known as a rubber in some Commonwealth countries, including South Africa from the material first used) is an article of stationery that is used for removing marks from paper or skin (e.g. parchment or vellum). Erasers have a ...
to the end of a pencil. In 1862, Lipman sold his patent to Joseph Reckendorfer for $100,000, who went on to sue pencil manufacturer
Faber-Castell
Faber-Castell AG is a manufacturer of pens, pencils, other office supplies (e.g., staplers, slide rules, erasers, rulers)Faber-Castell InternationalOffice Products and art supplies,Faber-Castell InternationalProducts for FineArts and FineWriting ...
for infringement. In ''Reckendorfer v. Faber'' (1875), the
Supreme Court of the United States
The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that involve a point o ...
ruled against Reckendorfer, declaring the patent invalid.
Extenders
Historian Henry Petroski notes that while ever more efficient means of mass production of pencils has driven the replacement cost of a pencil down, before this people would continue to use even the stub of a pencil. For those who did not feel comfortable using a stub, pencil extenders were sold. These devices function something like a ''porte-crayon''...the pencil stub can be inserted into the end of a shaft...Extenders were especially common among engineers and draftsmen, whose favorite pencils were priced dearly. The use of an extender also has the advantage that the pencil does not appreciably change its heft as it wears down." Artists use extenders to maximize the use of their
colored pencil
A colored pencil (American English), coloured pencil (Commonwealth English), pencil crayon, or coloured/colouring lead (Canadian English, Newfoundland English) is an art medium constructed of a narrow, pigmented core encased in a wooden cylindric ...
s.
Types
By marking material
Graphite
Graphite pencils are the most common types of pencil, and are encased in wood. They are made of a mixture of
clay
Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4).
Clays develop plasticity when wet, due to a molecular film of water surrounding the clay par ...
and
graphite
Graphite () is a crystalline form of the element carbon. It consists of stacked layers of graphene. Graphite occurs naturally and is the most stable form of carbon under standard conditions. Synthetic and natural graphite are consumed on large ...
and their darkness varies from light grey to black. Their composition allows for the smoothest strokes.
Solid
Solid graphite pencils are solid sticks of graphite and clay composite (as found in a 'graphite pencil'), about the diameter of a common pencil, which have no casing other than a wrapper or label. They are often called "woodless" pencils. They are used primarily for art purposes as the lack of casing allows for covering larger spaces more easily, creating different effects, and providing greater economy as the entirety of the pencil is used. They are available in the same darkness range as wood-encased graphite pencils.
Liquid
Liquid graphite pencils are pencils that write like
pen
A pen is a common writing instrument that applies ink to a surface, usually paper, for writing or drawing. Early pens such as reed pens, quill pens, dip pens and ruling pens held a small amount of ink on a nib or in a small void or cavity wh ...
s. The technology was first invented in 1955 by
Scripto
Scripto is an American company that was founded in Atlanta, Georgia, in 1924 by Monie A. Ferst. At one time the largest producer of writing instruments in the world, it now produces butane lighters.
History Early years
The company was originally ...
and
Parker Pens
The Parker Pen Company is a French manufacturer of luxury writing pens, founded in 1888 by George Safford Parker in Janesville, Wisconsin, United States. In 2011 the Parker factory at Newhaven, East Sussex, England, was closed, and its producti ...
. Scripto's liquid graphite formula came out about three months before Parker's liquid lead formula. To avoid a lengthy patent fight the two companies agreed to share their formulas.
Charcoal
Charcoal pencils are made of
charcoal
Charcoal is a lightweight black carbon residue produced by strongly heating wood (or other animal and plant materials) in minimal oxygen to remove all water and volatile constituents. In the traditional version of this pyrolysis process, cal ...
and provide fuller blacks than graphite pencils, but tend to smudge easily and are more abrasive than graphite. Sepia-toned and white pencils are also available for
duotone
Duotone (sometimes also known as ''Duplex'') is a halftone reproduction of an image using the superimposition of one contrasting color halftone over another color halftone. This is most often used to bring out middle tones and highlights of an ...
techniques.
Carbon pencils
Carbon pencils are generally made of a mixture of clay and
lamp black
Carbon black (subtypes are acetylene black, channel black, furnace black, lamp black and thermal black) is a material produced by the incomplete combustion of coal and coal tar, vegetable matter, or petroleum products, including fuel oil, fluid ...
, but are sometimes blended with charcoal or graphite depending on the darkness and manufacturer. They produce a fuller black than graphite pencils, are smoother than charcoal, and have minimal dust and smudging. They also blend very well, much like charcoal.
Colored
Colored pencil
A colored pencil (American English), coloured pencil (Commonwealth English), pencil crayon, or coloured/colouring lead (Canadian English, Newfoundland English) is an art medium constructed of a narrow, pigmented core encased in a wooden cylindric ...
s, or pencil crayons, have wax-like cores with pigment and other fillers. Several colors are often blended together.Categories of Wax-Based Drawing Media palimpsest.stanford.edu
Grease
Grease pencil
The grease pencil, a wax writing tool also known as a wax pencil, china marker, or chinagraph pencil (especially in the United Kingdom), is a writing implement made of hardened colored wax and is useful for marking on hard, glossy non-porous surf ...
s can write on virtually any surface (including glass, plastic, metal and photographs). The most commonly found grease pencils are encased in paper (Berol and Sanford Peel-off), but they can also be encased in wood (Staedtler Omnichrom).
watercolor
Watercolor (American English) or watercolour (British English; see spelling differences), also ''aquarelle'' (; from Italian diminutive of Latin ''aqua'' "water"), is a painting method”Watercolor may be as old as art itself, going back to t ...
techniques. Their cores can be diluted by water. The pencils can be used by themselves for sharp, bold lines. Strokes made by the pencil can also be saturated with water and spread with brushes.
By use
Carpentry
Carpenter's pencil
A carpenter pencil (carpentry pencil, carpenter's pencil) is a pencil that has a body with a rectangular or elliptical cross-section to prevent it from rolling away. Carpenter pencils are easier to grip than standard pencils, because they have a la ...
s are pencils that have two main properties: their shape prevents them from rolling, and their graphite is strong. The oldest surviving pencil is a German carpenter's pencil dating from the 17th Century and now in the Faber-Castell collection.
Copying
Copying pencil
A copying pencil, also indelible pencil or chemical pencil, is pencil whose pencil lead, lead contains a dye. The lead is fabricated by adding a dry water-soluble permanent dye to powdered graphite—used in standard graphite pencils—bef ...
s (or indelible pencils) are graphite pencils with an added dye that creates an indelible mark. They were invented in the late 19th century for
press
Press may refer to:
Media
* Print media or news media, commonly called "the press"
* Printing press, commonly called "the press"
* Press (newspaper), a list of newspapers
* Press TV, an Iranian television network
People
* Press (surname), a fam ...
copying and as a practical substitute for fountain pens. Their markings are often visually indistinguishable from those of standard graphite pencils, but when moistened their markings dissolve into a coloured ink, which is then pressed into another piece of paper. They were widely used until the mid-20th century when ball pens slowly replaced them. In Italy their use is still mandated by law for voting paper ballots in elections and referendums.
Eyeliner
Eyeliner pencils are used for make-up. Unlike traditional copying pencils, eyeliner pencils usually contain non-toxic dyes.
Erasable coloring
Unlike wax-based colored pencils, the erasable variants can be easily erased. Their main use is in sketching, where the objective is to create an outline using the same color that other media (such as wax pencils, or watercolor paints) would fill or when the objective is to scan the color sketch. Some animators prefer erasable color pencils as opposed to graphite pencils because they do not smudge as easily, and the different colors allow for better separation of objects in the sketch. Copy-editors find them useful too as markings stand out more than those of graphite, but can be erased.
Non-reproduction
Also known as
non-photo blue
Non-photo blue (or non-repro blue) is a common tool in the graphic design and print industry, being a particular shade of blue that cannot be detected by graphic arts camera film. This allows layout editors to write notes to the printer on the ...
pencils, the non-reproducing types make marks that are not reproducible by photocopiers (examples include "Copy-not" by Sanford and "Mars Non-photo" by Staedtler) or by
whiteprint
Whiteprint describes a document reproduction produced by using the diazo chemical process. It is also known as the blue-line process since the result is blue lines on a white background. It is a contact printing process which accurately reproduc ...
copiers (such as "Mars Non-Print" by Staedtler).
Stenography
Stenographer's pencils, also known as a steno pencil, are expected to be very reliable, and their lead is break-proof. Nevertheless, steno pencils are sometimes sharpened at both ends to enhance reliability. They are round to avoid pressure pain during long texts.
Golf
Golf pencils are usually short (a common length is ) and very cheap. They are also known as library pencils, as many libraries offer them as disposable, leak-proof writing instruments.
A standard, hexagonal, "#2 pencil" is cut to a hexagonal height of , but the outer diameter is slightly larger (about )
A standard, #2, hexagonal pencil is long.
Biggest
On 3 September 2007,
Ashrita Furman
Ashrita Furman (born Keith Furman, September 16, 1954) is a ''Guinness World Records'' record-breaker. As of 2017, Furman has set more than 600 official Guinness Records and currently holds 530 records, thus holding the Guinness world record for th ...
unveiled his giant US$20,000 pencil – long, (with over for the graphite centre) – after three weeks of creation in August 2007 as a birthday gift for teacher
Sri Chinmoy
Chinmoy Kumar Ghose (27 August 1931 – 11 October 2007), better known as Sri Chinmoy, was an Indian spiritual leader who taught meditation in the West after moving to New York City in 1964.
Mechanical pencil
A mechanical pencil, also clutch pencil, is a pencil with a replaceable and mechanically extendable solid pigment core called a "lead" . The lead, often made of graphite, is not bonded to the outer casing, and can be mechanically extended as its ...
s use mechanical methods to push lead through a hole at the end. These can be divided into two groups: with propelling pencils an internal mechanism is employed to push the lead out from an internal compartment, while clutch pencils merely hold the lead in place (the lead is extended by releasing it and allowing some external force, usually gravity, to pull it out of the body). The erasers (sometimes replaced by a sharpener on pencils with larger lead sizes) are also removable (and thus replaceable), and usually cover a place to store replacement leads. Mechanical pencils are popular for their longevity and the fact that they may never need sharpening. Lead types are based on grade and size; with standard sizes being , , , , , , , , and ISO 9175-1 —the size is available, but is not considered a standard ISO size.
Pop a Point
Pioneered by Taiwanese stationery manufacturer Bensia Pioneer Industrial Corporation in the early 1970s, Pop a Point Pencils are also known as Bensia Pencils, stackable pencils or non-sharpening pencils. It is a type of pencil where many short pencil tips are housed in a cartridge-style plastic holder. A blunt tip is removed by pulling it from the writing end of the body and re-inserting it into the open-ended bottom of the body, thereby pushing a new tip to the top.
Plastic
Invented by Harold Grossman for the Empire Pencil Company in 1967, plastic pencils were subsequently improved upon by Arthur D. Little for Empire from 1969 through the early 1970s; the plastic pencil was commercialised by Empire as the "EPCON" Pencil. These pencils were co-extruded, extruding a plasticised graphite mix within a wood-composite core.
Other aspects
* By factory state: sharpened, unsharpened.
* By casing material: wood, paper, plastic.
Health
Residual graphite from a pencil stick is not poisonous, and graphite is harmless if consumed.
Although
lead
Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cu ...
has not been used for writing since antiquity, such as in Roman styli,
lead poisoning
Lead poisoning, also known as plumbism and saturnism, is a type of metal poisoning caused by lead in the body. The brain is the most sensitive. Symptoms may include abdominal pain, constipation, headaches, irritability, memory problems, inferti ...
from pencils was not uncommon. Until the middle of the 20th century the paint used for the outer coating could contain high concentrations of lead, and this could be ingested when the pencil was sucked or chewed.
Manufacture
The lead of the pencil is a mix of finely ground
graphite
Graphite () is a crystalline form of the element carbon. It consists of stacked layers of graphene. Graphite occurs naturally and is the most stable form of carbon under standard conditions. Synthetic and natural graphite are consumed on large ...
and
clay
Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4).
Clays develop plasticity when wet, due to a molecular film of water surrounding the clay par ...
powders. Before the two substances are mixed, they are separately cleaned of foreign matter and dried in a manner that creates large square cakes. Once the cakes have fully dried, the graphite and the clay squares are mixed together using water. The amount of clay content added to the graphite depends on the intended
pencil hardness
A pencil () is a writing or drawing implement with a solid pigment core in a protective casing that reduces the risk of core breakage, and keeps it from marking the user's hand.
Pencils create marks by physical abrasion, leaving a trail ...
(lower proportions of clay makes the core softer), and the amount of time spent on grinding the mixture determines the quality of the lead. The mixture is then shaped into long
spaghetti
Spaghetti () is a long, thin, solid, cylindrical pasta.spaghetti Dictionary.com. Dictionary.com Unabridg ...
-like strings, straightened, dried, cut, and then tempered in a
kiln
A kiln is a thermally insulated chamber, a type of oven, that produces temperatures sufficient to complete some process, such as hardening, drying, or chemical changes. Kilns have been used for millennia to turn objects made from clay int ...
. The resulting strings are dipped in oil or molten wax, which seeps into the tiny holes of the material and allows for the smooth writing ability of the pencil. A juniper or
incense-cedar
''Calocedrus'', the incense cedar (alternatively spelled incense-cedar), is a genus of coniferous trees in the cypress family Cupressaceae first described as a genus in 1873. It is native to eastern Asia and western North America.
The gener ...
plank with several long parallel grooves is cut to fashion a "slat," and the graphite/clay strings are inserted into the grooves. Another grooved plank is glued on top, and the whole assembly is then cut into individual pencils, which are then varnished or painted. Many pencils feature an
eraser
An eraser (also known as a rubber in some Commonwealth countries, including South Africa from the material first used) is an article of stationery that is used for removing marks from paper or skin (e.g. parchment or vellum). Erasers have a ...
on the top and so the process is usually still considered incomplete at this point. Each pencil has a shoulder cut on one end of the pencil to allow for a metal
ferrule
A ferrule (a corruption of Latin ' "small bracelet", under the influence of ' "iron") is any of a number of types of objects, generally used for fastening, joining, sealing, or reinforcement. They are often narrow circular rings made from me ...
to be secured onto the wood. A rubber plug is then inserted into the ferrule for a functioning eraser on the end of the pencil.
clay
Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4).
Clays develop plasticity when wet, due to a molecular film of water surrounding the clay par ...
and
graphite
Graphite () is a crystalline form of the element carbon. It consists of stacked layers of graphene. Graphite occurs naturally and is the most stable form of carbon under standard conditions. Synthetic and natural graphite are consumed on large ...
and their darkness varies from light grey to black: the more clay the harder the pencil. There is a wide range of grades available, mainly for artists who are interested in creating a full range of tones from light grey to black. Engineers prefer harder pencils which allow for a greater control in the shape of the lead.
Manufacturers distinguish their pencils by grading them, but there is no common standard. Two pencils of the same grade but different manufacturers will not necessarily make a mark of identical tone nor have the same hardness.
Most manufacturers, and almost all in Europe, designate their pencils with the letters ''H'' (commonly interpreted as "hardness") to ''B'' (commonly "blackness"), as well as ''F'' (usually taken to mean "fineness", although F pencils are no more fine or more easily sharpened than any other grade. Also known as "firm" in Japan). The standard writing pencil is graded ''HB''. This designation was in use at least as early as 1844. It used ''B'' for black and ''H'' for hard; a pencil's grade was described by a sequence or successive Hs or Bs such as ''BB'' and ''BBB'' for successively softer leads, and ''HH'' and ''HHH'' for successively harder ones. The
Koh-i-Noor Hardtmuth
Koh-i-Noor Hardtmuth a.s. is a Czech manufacturing company of stationery products, based in České Budějovice. Having been established in 1790, it is one of the oldest stationery companies in the world.
With four factories in its country of o ...
pencil manufacturers claim to have first used the HB designations, with ''H'' standing for Hardtmuth, ''B'' for the company's location of Budějovice, and ''F'' for Franz Hardtmuth, who was responsible for technological improvements in pencil manufacture.
As of 2021, a set of pencils ranging from a very soft, black-marking pencil to a very hard, light-marking pencil usually ranges from softest to hardest as follows:
Koh-i-noor
The Koh-i-Noor ( ; from ), also spelled Kohinoor and Koh-i-Nur, is one of the largest cut diamonds in the world, weighing . It is part of the Crown Jewels of the United Kingdom. The diamond is currently set in the Crown of Queen Elizabeth The ...
offers twenty grades from 10H to 8B for its 1500 series. Mitsubishi Pencil offers twenty-two grades from 10H to 10B for its Hi-uni range. Derwent produces twenty grades from 9H to 9B for its graphic pencils.
Staedtler
Staedtler Mars GmbH & Co. KG () is a German multinational stationery manufacturing company based in Nuremberg. The firm was founded by J.S. Staedtler (1800–1872) in 1835 and produces a large variety of stationery products, such as writing implem ...
produces 24 from 10H to 12B for its Mars Lumograph pencils.
Numbers as designation were first used by Conté and later by John Thoreau, father of
Henry David Thoreau
Henry David Thoreau (July 12, 1817May 6, 1862) was an American naturalist, essayist, poet, and philosopher. A leading Transcendentalism, transcendentalist, he is best known for his book ''Walden'', a reflection upon simple living in natural su ...
, in the 19th century.
Although Conté/Thoreau's equivalence table is widely accepted, not all manufacturers follow it; for example, Faber-Castell uses a different equivalence table in its ''Grip 2001'' pencils: 1 = 2B, 2 = B, 2½ = HB, 3 = H, 4 = 2H.
Hardness test
Graded pencils can be used for a rapid test that provides relative ratings for a series of coated panels but can't be used to compare the pencil hardness of different coatings. This test defines a "pencil hardness" of a coating as the grade of the hardest pencil that does not permanently mark the coating when pressed firmly against it at a 45 degree angle. For standardized measurements, there are
Mohs hardness
The Mohs scale of mineral hardness () is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material.
The scale was introduced in 1812 by th ...
testing pencils on the market.
External colour and shape
The majority of pencils made in the US are painted yellow. According to
Henry Petroski
Henry Petroski (February 6, 1942) is an American engineer specializing in failure analysis. A professor both of civil engineering and history at Duke University, he is also a prolific author. Petroski has written over a dozen books – beginning ...
, this tradition began in 1890 when the L. & C. Hardtmuth Company of
Austria-Hungary
Austria-Hungary, often referred to as the Austro-Hungarian Empire,, the Dual Monarchy, or Austria, was a constitutional monarchy and great power in Central Europe between 1867 and 1918. It was formed with the Austro-Hungarian Compromise of ...
introduced their
Koh-I-Noor
The Koh-i-Noor ( ; from ), also spelled Kohinoor and Koh-i-Nur, is one of the largest cut diamonds in the world, weighing . It is part of the Crown Jewels of the United Kingdom. The diamond is currently set in the Crown of Queen Elizabeth The ...
brand, named after the famous diamond. It was intended to be the world's best and most expensive pencil, and at a time when most pencils were either painted in dark colours or not at all, the Koh-I-Noor was yellow.
As well as simply being distinctive, the colour may have been inspired by the Austro-Hungarian flag; it was also suggestive of
the Orient
The Orient is a term for the East in relation to Europe, traditionally comprising anything belonging to the Eastern world. It is the antonym of ''Occident'', the Western World. In English, it is largely a metonym for, and coterminous with, the ...
at a time when the best-quality graphite came from
Siberia
Siberia ( ; rus, Сибирь, r=Sibir', p=sʲɪˈbʲirʲ, a=Ru-Сибирь.ogg) is an extensive geographical region, constituting all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has been a part of ...
. Other companies then copied the yellow colour so that their pencils would be associated with this high-quality brand, and chose brand names with explicit Oriental references, such as Mikado (renamed Mirado) and Mongol.
Not all countries use yellow pencils. German and Brazilian pencils, for example, are often green, blue or black, based on the trademark colours of
Faber-Castell
Faber-Castell AG is a manufacturer of pens, pencils, other office supplies (e.g., staplers, slide rules, erasers, rulers)Faber-Castell InternationalOffice Products and art supplies,Faber-Castell InternationalProducts for FineArts and FineWriting ...
, a major German stationery company which has plants in those countries. In southern European countries, pencils tend to be dark red or black with yellow lines, while in Australia, they are red with black bands at one end. In India, the most common pencil colour scheme was dark red with black lines, and pencils with a large number of colour schemes are produced.
Pencils are commonly round,
hexagonal
In geometry, a hexagon (from Greek , , meaning "six", and , , meaning "corner, angle") is a six-sided polygon. The total of the internal angles of any simple (non-self-intersecting) hexagon is 720°.
Regular hexagon
A '' regular hexagon'' has ...
, or sometimes
triangular
A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices ''A'', ''B'', and ''C'' is denoted \triangle ABC.
In Euclidean geometry, any three points, when non- collinea ...
in section. Carpenters' pencils are typically oval or rectangular, so they cannot easily roll away during work.
Notable users
*
Thomas Edison
Thomas Alva Edison (February 11, 1847October 18, 1931) was an American inventor and businessman. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures. These inventio ...
had his pencils specially made by Eagle Pencil. Each pencil was three inches long, was thicker than standard pencils and had softer graphite than was normally available.
*
Charles Fraser-Smith
Charles Fraser-Smith (26 January 1904 – 9 November 1992) was an author and one-time missionary who is widely credited as being the inspiration for Ian Fleming's James Bond quartermaster Q. During World War II, Fraser-Smith worked for the Minis ...
During World War II, Fraser-Smith worked for the Ministry of Supply, fabricating equipment nicknamed "Q-devices" (after Q-ships) for SOE agents operating in occupied Europe. In 1942, Charles Fraser-Smith, who worked in
MI9
MI9, the British Directorate of Military Intelligence Section 9, was a highly secret department of the War Office between 1939 and 1945. During World War II it had two principal tasks: (1) assisting in the escape of Allied prisoners of war (P ...
, arrived at the Cumberland pencil factory, he had an idea to create a secret map and compass pencil. These were given to
Lancaster Bomber
The Avro Lancaster is a British Second World War heavy bomber. It was designed and manufactured by Avro as a contemporary of the Handley Page Halifax, both bombers having been developed to the same specification, as well as the Short Stirling ...
airmen and were made secretly under the Official Secrets Act, in Keswick.
*
Vladimir Nabokov
Vladimir Vladimirovich Nabokov (russian: link=no, Владимир Владимирович Набоков ; 2 July 1977), also known by the pen name Vladimir Sirin (), was a Russian-American novelist, poet, translator, and entomologist. Bo ...
rewrote everything he had ever published, usually several times, in pencil.
*
John Steinbeck
John Ernst Steinbeck Jr. (; February 27, 1902 – December 20, 1968) was an American writer and the 1962 Nobel Prize in Literature winner "for his realistic and imaginative writings, combining as they do sympathetic humor and keen social ...
was an obsessive pencil user and is said to have used as many as 60 a day. His novel '' East of Eden'' took more than 300 pencils to write.
*
Vincent van Gogh
Vincent Willem van Gogh (; 30 March 185329 July 1890) was a Dutch Post-Impressionism, Post-Impressionist painter who posthumously became one of the most famous and influential figures in Western art history. In a decade, he created about 2 ...
used only Faber pencils as they were "superior to Carpenters pencils, a capital black and most agreeable".Faber Castell's friends Faber-castell.co.nz
*
Johnny Carson
John William Carson (October 23, 1925 – January 23, 2005) was an American television host, comedian, writer and producer. He is best known as the host of ''The Tonight Show Starring Johnny Carson'' (1962–1992). Carson received six Pr ...
regularly played with pencils at his ''
Tonight Show
''The Tonight Show'' is an American late-night talk show that has aired on NBC since 1954. The show has been hosted by six comedians: Steve Allen (1954–1957), Jack Paar (1957–1962), Johnny Carson (1962–1992), Jay Leno (1992–2009 and 2010 ...
'' desk. These pencils were specially made with erasers at both ends to avoid on-set accidents.
*
Roald Dahl
Roald Dahl (13 September 1916 – 23 November 1990) was a British novelist, short-story writer, poet, screenwriter, and wartime fighter ace of Norwegian descent. His books have sold more than 250 million copies worldwide. Dahl has be ...
used only pencils with yellow casing to write his books. He had 6 sharpened pencils ready at the beginning of each day and only when all 6 pencils became unusable did he resharpen them.
Manufacturers
Prominent global manufacturers of wood-cased (including wood-free) pencils:
IKEA pencil
IKEA pencils are small pencils provided for free in IKEA stores worldwide. They are found in small boxes attached to poles, together with maps, measuring tapes and shopping forms. The IKEA pencil has been known for the wide variety of designs. Th ...
Plumbago drawing
Plumbago drawings are graphite drawings from the 17th and 18th centuries. There was a group of artists whose work in plumbago is remarkable for their portraits drawn with finely pointed pieces of graphite and on vellum. These works were initially ...
*
Tortillon
A tortillon (; also blending stump) is a cylindrical drawing tool, tapered at the end and usually made of rolled paper, used by artists to smudge or blend marks made with charcoal, Conté crayon, pencil or other drawing utensils.
A blending stu ...