The pencil “lead” is actually a mixture of graphite and clay. More clay in the mixture makes the lead harder. A harder lead has a higher number. Pencils are numbered from 1-3 but most people use a ...

A machine punches erasers into aluminum ferrules at the ... launching what’s thought to be the first pencil manufacturer in the South. Soon, other manufacturers started arriving in Shelbyville ...

First, though, he had to learn to draw ... The design process is no longer etched into the page. Of course, the pencil, the eraser (electric or not), and the computer are all just tools for ...

Twist-Erase III Mechanical Pencils feature a sturdy ... grip delivers maximum comfort and control With the jumbo Twist-Up Eraser, you'll suffer no smudges, no paper tears and no ghosts Each ...

Soft, crustless bread was also used to wipe away pencil markings. It was around 1770 when things got more rubbery. The engineer Edward Nairne was responsible for the first widely available eraser ...