Editing Pencil (section)

===By manufacture===
;[[Mechanical pencil]]s:
[[File:Mechanical pencil lead spilling out 051907.jpg|thumb|right|Lead for mechanical pencils]] [[File:Biegsame Bleistifte fcm.jpg|thumb|Flexible pencils]]
There are also pencils which use mechanical methods to push lead through a hole at the end. These can be divided into two groups: propelling pencils use an internal mechanism 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 {{Convert|2.00|mm|abbr=on}}, {{Convert|1.40|mm|abbr=on}}, {{Convert|1.00|mm|abbr=on}}, {{Convert|0.70|mm|abbr=on}}, {{Convert|0.50|mm|abbr=on}}, {{Convert|0.35|mm|abbr=on}}, {{Convert|0.25|mm|abbr=on}}, {{Convert|0.18|mm|abbr=on}}, and {{Convert|0.13|mm|abbr=on}} ([http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=16778 ISO 9175-1])—the {{Convert|0.90|mm|abbr=on}} size is available, but is not considered a standard ISO size.

;Pop a Point Pencils:
Pioneered by Taiwanese stationery manufacturer [[Bensia Pioneer Industrial Corporation]] in the early 1970s, the product is 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 pencils:
Invented by Harold Grossman<ref>Harold Grossman. [http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=/netahtml/PTO/search-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN/3360489 US Patent 3,360,489], issued 26 December 1967</ref> for Empire Pencil Company in 1967 and 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.<ref>For information about this invention see the writeup on ADL Chronicles [http://adlittlechronicles.blogspot.com/2008/07/epcon-plastic-pencil.html The Epcon Plastic Pencil] {{webarchive|url=https://web.archive.org/web/20110708022148/http://adlittlechronicles.blogspot.com/2008/07/epcon-plastic-pencil.html |date=8 July 2011 }}, adlittlechronicles.blogspot.com.</ref>