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Author Topic: Pencil lead  (Read 3103 times)

Offline cuso4

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Pencil lead
« on: 04/11/2004 20:26:45 »
Hello~ I haven't been around for ages...the amount of work to do has got on top of me.

Anyone knows how pencil lead of different hardness (eg. 2B, B, HB....etc) are produced? I say hardness of pencil lead because if it's softer then more graphite will be left on the paper. Is this due to the % compositions of graphite in pencil lead? What other substances are also in pencil lead?

Angel


 

Offline moses lawn

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Re: Pencil lead
« Reply #1 on: 05/11/2004 06:51:55 »
The graphite is mixed with various proportions of clay to give different hardnesses of pencil leads.
 

Offline cuso4

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Re: Pencil lead
« Reply #2 on: 06/11/2004 13:58:46 »
thx moses lawn

Angel
 

Offline rosalind dna

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Pencil lead
« Reply #3 on: 15/01/2008 17:25:14 »
This has the whole range of the different hardnesses of pencil leads, which
is made out of graphite. Formed from clay or charcoal products as these links
will tell you, I hope.

http://en.wikipedia.org/wiki/Pencil
http://www.studioarts.co.uk/links/hintsandtips/graphicsinformationpencils.htm
 

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Pencil lead
« Reply #3 on: 15/01/2008 17:25:14 »

 

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