Basic Consumables, ContinuedErasersHAND-HELD ERASERS: Hand-held erasers are available in different(continued)grades, each with a specific purpose. Hard erasers are a white or grey colorand are very abrasive. They remove stubborn marks in pencil or ink.Moderately abrasive erasers are red. Soft erasers remove only light lines, asthey are the least abrasive. Soft erasers are pink in color.Types oferasersErasers have specific purposes. Besides the pencil eraser, there are fourother erasers the DM uses in the work center. These are plastic erasers, artgum, kneaded erasers, and pulverized eraser particles.PLASTIC ERASERS: Plastic erasers work well removing unwanted marksfrom drawings on Mylar. Moisten the eraser slightly before using to increasethe drag on the drawing surface. This eraser leaves no residue.ART GUM: This eraser is excellent for removing finger marks and smudgeswithout marring the surface of a drawing. An art gum eraser leaves muchresidue which should be whisked away with a draftsman’s brush.KNEADED ERASERS: Kneaded erasers bring out the highlights in adrawing and clean a drawing surface. They work by absorbing graphiteparticles. Absorption increases by kneading the eraser in your hand.Generally, it leaves no residue unless it is too old and/or too full of absorbedparticles. If this eraser becomes overly warm, the substance may breakdown, leaving a stain on the drawing surface.Continued on next page2-65
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