The diagram illustrates how a lead pencil is manufactured.
Overall, the process involves twelve distinct steps, which begin with planting sprouts and end with packaging lead pencils into a box for further distribution.
In the initial stages, sprouts are grown for four months. After that, they are replanted for three years until they appear thinned. Next, the trees are grown for another fourteen years, after which they are subsequently cut down for wood. Then, the wood from the trees is sliced into thin slats using a circular saw and treated for sixty days.
The next stage involves cutting long narrow strips, also known as grooves, in the wood slat and then gluing black leads into the grooves. Following that, another wood slat is put on top of the earlier slat, and they are sandwiched together. Afterward, the slats are hard-pressed with heat and cut into sticks. Finally, the sticks are painted, sharpened, and stamped before they are packaged in a box.