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Pencil

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A pencil is a handy tool for writing or drawing.

Number-2-pencil
Number-2-pencil

It has a solid core filled with pigment. This core stays inside a protective casing. The casing stops the core from breaking easily. It also keeps the dark marks off your hands.

Pencil Diagram
Pencil Diagram

Pencils work through a thing called physical abrasion. When you move the pencil, the core rubs against the paper. This leaves a trail of material on the surface. Unlike pens, pencils do not use liquid ink.

Speciality artists pencils 051907
Speciality artists pencils 051907

Most pencil cores are made of graphite mixed with clay. This mixture makes the marks you see on paper. Graphite pencils make grey or black marks. These marks are easy to erase with a rubber. They can also stand up to moisture and light.

Pencil manufacture
Pencil manufacture

Some people use charcoal cores for sketching art. There are also colored pencils made with wax. These wax cores can smear when you use an eraser. Grease pencils have oily cores for smooth surfaces like glass.

Caran d'Ache Farbstifte
Caran d'Ache Farbstifte

History shows that people used brushes to write long ago. The word pencil comes from a word for a little tail.

In 1565, people found a huge deposit of graphite in England. This graphite was very pure and solid. People thought it was a type of lead. Because of this, they called it plumbago. Today, we still call the core "lead" by mistake.

Palomino Blackwing 602 pencils
Palomino Blackwing 602 pencils

This pure graphite was so valuable it was guarded by the Crown.

Making pencils has changed a lot over time. Around 1560, an Italian couple made early wood designs. They carved out wood to hold the graphite. In 1795, Nicolas-Jacques Conté found a better way. He mixed graphite powder with clay and heated it.

Pencil manufacture
Pencil manufacture

By changing the clay amount, he changed the hardness. In the United States, William Munroe made the first wood pencils in 1812. Later, Joseph Dixon helped mass-produce them. By 1870, his company became a world leader.

Pencil manufacture
Pencil manufacture

Modern pencils use many different materials today. Most use wood from incense cedar trees.

Number-2-pencil
Number-2-pencil

This wood is good because it does not splinter. You can also find mechanical pencils made of plastic. These have mobile cores that you can extend or retract.

Mechanical pencil lead spilling out 051907
Mechanical pencil lead spilling out 051907

Some artists use "woodless" pencils which are just solid sticks. In 1858, Hymen Lipman patented the eraser on the end. This makes the pencil a complete tool for your desk.

LipmanPencilEraserPatent
LipmanPencilEraserPatent

Over 14 billion pencils are made every single year.

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🖼️ Images & Media (19)
File:Pencils hb.jpg
Pencils hb.jpg
File:Caran d'Ache Farbstifte.JPG
Caran d'Ache Farbstifte.JPG
File:Pencil Diagram.svg
Pencil Diagram.svg
File:Soviet made Iskusstvo pencils.jpg
Soviet made Iskusstvo pencils.jpg
File:Palomino Blackwing 602 pencils.jpg
Palomino Blackwing 602 pencils.jpg
File:Pencil, perhaps made by Henry David Thoreau - Concord Museum - Concord, MA - DSC05641.JPG
Pencil, perhaps made by Henry David...
File:Pencil manufacture.svg
Pencil manufacture.svg
File:LipmanPencilEraserPatent.jpg
LipmanPencilEraserPatent.jpg
File:Speciality artists pencils 051907.jpg
Speciality artists pencils 051907.jpg
File:Colored-Pencils.jpg
Colored-Pencils.jpg
File:3 promotional pencils (ubt).JPG
3 promotional pencils (ubt).JPG
File:Censored mail Spain Australia 1943.jpg
Censored mail Spain Australia 1943.jpg

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