Share How It´s Made: Pencils
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Where was GRAPHITE discovered?
England
What 2 elements are mixed to make up LEAD in pencils?
graphite and clay
What characteristics does the wood used to make pencils need to have?
soft enough to sharpen yet strong enough not to bend
What is attached to the pencil at the end the process?
An eraser
What are the grooves made in the wood filled with in the factory?
Glue
Why are the grooves made in the wood filled with glue in the factory?
So they are less likely to break
At what temperature is the lead?
800 º C
What is used to make colored pencils?
Wax, clay and pigments
What 3 paints were used to colour the pencils?
Yellow Blackand Transparent
What 2 checks are made on the pencil in the fatory?
Lead quality and strenght test
What Year was the new type pencil lead invented?
1795
What nationality was the chemist who invented the new type of lead?
French
