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Comprehensive Guide to Pencils

A pencil is a writing or drawing tool made of graphite or other material encased in wood or plastic. It creates marks by leaving behind bits of its core material rather than liquid ink. The most common pencil has a hexagonal wood casing permanently bonded to a graphite or clay-based core that must be sharpened to a point for use. More advanced pencils have mechanical casings that allow reloading of separate graphite cores as they are used up.

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81 views2 pages

Comprehensive Guide to Pencils

A pencil is a writing or drawing tool made of graphite or other material encased in wood or plastic. It creates marks by leaving behind bits of its core material rather than liquid ink. The most common pencil has a hexagonal wood casing permanently bonded to a graphite or clay-based core that must be sharpened to a point for use. More advanced pencils have mechanical casings that allow reloading of separate graphite cores as they are used up.

Uploaded by

kate trisha
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Pencil

From Wikipedia, the free encyclopedia


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This article is about the writing implement. For other uses, see Pencil (disambiguation).

HB graphite pencils

Coloured pencils (Caran d'Ache)

A typical modern-day pencil.

1. Solid pigment core (typically graphite, commonly called pencil lead).

2. Wood.

3. Painted body.

4. Ferrule.

5. Eraser.

A pencil is an implement for writing or drawing, constructed of a narrow, solid pigment core in a protective casing that


prevents the core from being broken or 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 or other
surface. They are distinct from pens, which dispense liquid or gel ink onto the marked surface.
Most pencil cores are made of graphite powder mixed with a clay binder. Graphite pencils (traditionally known as "lead
pencils") produce grey or black marks that are easily erased, but otherwise resistant to moisture, most chemicals, ultraviolet
radiation and natural aging. Other types of pencil cores, such as those of charcoal, are mainly used for drawing
and sketching. Coloured pencils 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 pencils have a softer, oily core that can leave marks on smooth surfaces such as glass or porcelain.
The most common pencil casing is thin wood, usually hexagonal in section but sometimes cylindrical or triangular,
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 pencils 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.

Contents

 1History
o 1.1Camel's hair pencil
o 1.2Discovery of graphite deposit
o 1.3Wood holders added
o 1.4New pencils from graphite powder, and graphite and clay
o 1.5Pencil in the United States
o 1.6Eraser attached
o 1.7Pencil extenders
 2Types
o 2.1By marking material
o 2.2By use
o 2.3By shape
o 2.4By size
o 2.5By manufacture
o 2.6Other aspects
 3Health
 4Manufacture
 5Grading and classification
o 5.1Pencil hardness test
 6External colour and shape of pencils
 7Notable pencil users
 8Manufacturers
 9See also
 10Notes
 11References
 12Bibliography
 13Further reading
 14External links

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