What is a Gum Eraser?
A gum eraser, also known as a kneaded eraser, is a type of eraser commonly used by artists and draftsmen to remove graphite or charcoal marks from paper or other surfaces. Unlike traditional erasers, which are made of rubber or plastic, gum erasers are soft, pliable and moldable, which allows them to be shaped into different forms and sizes depending on the task at hand.
Composition and Characteristics of a Gum Eraser
Gum erasers are usually made from a mixture of rubber and vinyl, which gives them their unique texture and pliability. They are composed of a blend of high-polymers that make them very soft, yet still able to retain their shape. Gum erasers are commonly seen as grey or beige and almost have no scent like many of the other erasers.
Uses of a Gum Eraser
Gum erasers have a couple of uses that they’re known for:
- Artists use gum erasers to remove mistakes, smudges, or errors made with graphite pencils, charcoal or pastels.
- Architects and draftsmen use gum erasers to erase pencil marks from blueprints or detailed sketches. They are especially useful on vellum drafting paper where conventional erasers can damage the surface.
How to Use a Gum Eraser?
Because a gum eraser is pliable and moldable, it’s important to use it properly to avoid any damage to the paper or surface. To use a gum eraser, you should shape it into a desired form using your fingers, like a ball or cylinder, then apply gentle pressure to the surface you want to erase, being careful not to apply too much pressure or damage the surface.
Caring for a Gum Eraser
A gum eraser is very pliable and can pick up dust and dirt over time. If a gum eraser becomes too soiled or loses its texture, you can gently stretch, massage, and shape it to revive its texture. If a gum eraser gets damaged or discolored, you can cut away the damaged portion to return it to working condition. You should store gum erasers in a cool and dry place away from dust and debris to maintain their pliability and texture.
