You can refill them and I encourage you to do so. This video explains how to refill the pencil, complete with close-ups. Don't throw them away, refill them! Remember, the Paper-Mate Sharpwriter pencil uses 0.7mm lead. Standard Pentel lead will work excellent. The video was recorded with a Sony EVO-210 Video 8 8mm VCR.
Uses of Carbon. Carbon (in the form of coal, which is mainly carbon) is used as a fuel. Graphite is used for pencil tips, high temperature crucibles, dry cells, electrodes and as a lubricant. Diamonds are used in jewelry and â because they are so hard â in industry for cutting, drilling, grinding, and polishing.
Graphite is a dark gray to black, very soft, shiny metallic mineral with a distinctive greasy feeling. One of the Earthâs softest minerals, graphite will easily leave marks on paper, which is why it is used for fine artist pencils.Even modern pencil âleadâ is composed of graphite mixed with clay.raphite is a dark gray to black, very soft, shiny metallic mineral with a distinctive greasy feeling. One of the Earthâs softest minerals, graphite will easily leave marks on paper, which is why it is used for fine artist pencils. Even modern pencil âleadâ is composed of graphite mixed with clay.