Skip to content
Advertisements

Alphabe Thursday P is for Plumbago and pencil lead

March 6, 2014

I have recently learned that these days there is no lead in a pencil.  We understand that indeed real lead was used for drawing; Pliny says that it was used for ruling lines on the papyrus, so that the junior scribes would write neatly.  Later, in the 14th century Italian artists’ pencils were made by mixing lead and tin; any errors, apparently could be rubbed out with bread crusts.  

However, since the the 16th century, when discovered the the hills of the British Lake District, graphite has been used.  It is a relation to black carbon and called then plumbago, black lead or wad.  It was used mainly in ammunition casting.  A thin layer of plumbago round the inside of a cannon ball mould would allow the finished missile to pop out of the cast easily.   

It was much later in the 18th century when the oily stone was renamed graphite to be used for making marks on paper.  

alphabet thursday

Advertisements
10 Comments leave one →
  1. March 6, 2014 8:33 am

    Hi thanks not even 9am and I have learned something new

    • March 6, 2014 8:36 am

      I only learned it yesterday 🙂 it took me all day (ish) Thanks for being there!!

  2. March 6, 2014 8:57 am

    and I thought artists went to the Lake District for the pulchritudinous views. Particularly pleasing post & pluvial sketch

    • March 6, 2014 9:00 am

      Oh Laura you are so ‘posh’ I will have to go to google translate 🙂 but I am pleased with your kind words xx

  3. March 7, 2014 2:59 am

    funny – most people don’t refer to pencils as graphite, but lead! If they only knew… Thanks for the informative post! {:-Deb

  4. March 7, 2014 3:02 am

    I guess we’ll always call it lead out of habit. 🙂

    • March 7, 2014 7:34 am

      I guess we have more information now… my parents and their peers had lots of mis-information! 🙂

  5. March 7, 2014 9:34 pm

    No lead in pencils? Seriously?! Since forever that’s what everyone said…. wow.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: