Editing Pencil (section)

===By marking material===
[[File:Colored-Pencils.jpg|thumb|right|Coloured pencils]]
[[File:3 promotional pencils (ubt).JPG|thumb|Promotional pencils]]
;Graphite pencils: These are the most common types of pencil, and are encased in wood. They are made of a mixture of [[clay]] and [[graphite]] and their darkness varies from light grey to black. Their composition allows for the smoothest strokes.
;Solid graphite pencils: These 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 graphite pencils:  These are pencils that write like [[pen]]s.  The technology was first invented in 1955 by [[Scripto]] and [[Parker Pens]].  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.<ref>{{cite web | url=https://parkerpens.net/liquidlead.html | title=Vintage Pen Blog | publisher=GoPens.com | deadurl=no | archiveurl=https://web.archive.org/web/20170906034612/https://parkerpens.net/liquidlead.html | archivedate=6 September 2017 | df=dmy-all }}</ref>
;Charcoal pencils: Are made of [[charcoal]] 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]] techniques.
;Carbon pencils: They generally are made of a mixture of clay and [[lamp black]], but are sometimes blended with charcoal or graphite depending on the darkness and manufacturer.  They produce a fuller black than graphite pencils, but are smoother than charcoal.
;[[Colored pencil|Coloured pencils]], or pencil crayons: These have wax-like cores with pigment and other fillers. Multiple colours are often blended together.<ref name="wax pencil">[https://web.archive.org/web/20080609001054/http://palimpsest.stanford.edu/waac/wn/wn19/wn19-3/wn19-308.html Categories of Wax-Based Drawing Media], palimpsest.stanford.edu</ref>
;[[Grease pencil]]s: They 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).<ref name="wax pencil" />
;Watercolour pencils: These are designed for use with [[watercolour]] techniques. 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.<ref name="wax pencil" />