The diagram shows the process by which a lead pencil is produced. Overall, it entails a total of twelve steps involved in two major stages: growing trees used for the outer cloth of the pencil and manufacturing using various kinds of equipment.
The process begins with cultivating plants in an open environment. The trees are replanted after growing for 4 months, and then they are thinned for the next three years. In the next 14 years, they are chopped and sent to factories, where the rest of the process takes place.
The second phase of the production stage is the longest one, requiring labor-intensive work. In factories, raw materials are thinned to make slats. The fine piece of wood is subsequently treated with resin and left to dry. With the passing of 60 days, black lead is put on the groove of the slat by being glued. After being covered with new slat, a half-ready product is subjected to intense heat compressed from above by metal equipment. On a final stage, after they are cut into long pieces, they are painted, sharpened, and stamped before being put into custom-designed packages.