What is the purpose of erasing shield?

What is the purpose of erasing shield?

An eraser shield is a thin sheet of stainless steel or plastic with slots and holes of different shapes. They are designed to allow erasers to be used through them to erase lines and text without removing lines close by which do not need to be (or should not be) erased.

Why is an erasing shield important to the work of a draftsman?

Figure 2-12 An eraser shield allows for precise erasing, as it shields the parts of the drawing that are to remain. The prepunched holes allow the designer to erase only those lines needing to be erased.

What is the function of erasing?

Eraser, piece of rubber or other material used to rub out marks made by ink, pencil, or chalk. The modern eraser is usually a mixture of an abrasive such as fine pumice, a rubbery matrix such as synthetic rubber or vinyl, and other ingredients.

What is an erasing shield and why would you use one in drafting?

Eraser shield: a micro-thin piece of metal with cut-outs that allow the user to erase detailed sections of a drawing without damage to the rest. French curve: a rigid plastic template used to draw irregular curves or radii.

How do I clean my erase shield?

To clean excess graphite from a white plastic or gum eraser, simply rub it briskly on a piece of coarse scrap paper. If the eraser is very greasy and dirty, one can use a craft knife to trim away the ends.

How should you erase pencil marks?

Erase it! That’s right, try the eraser. Unsurprisingly, one of the best ways to get graphite off of any surface is with a soft eraser. Gently rub the eraser on the stained material, making sure not to distort the surface with too much pressure, and wipe away any eraser dust that may have been left behind.

How do you maintain a Erase shield?

Which is the proper way of cleaning drafting tools?

Lay out all the drafting tools that you use and separate them into piles of like items. Place all pencils together, markers, erasers, rulers, stencils, paper and miscellaneous. Using the cleaner, spray the cloth and wipe down supplies that have residue on them.

Can I erase pencil under watercolor?

Once the pencil is trapped under a layer of dry watercolour paint it is effectively sealed in and you will not be able to erase it. This is easy to do (and quite fun) with a kneaded eraser. Simply dab repeatedly at your sketch with the kneaded eraser.

What drafting tools is used to protect the rest of the drawing when removing unnecessary lines?

ERASING SHIELD  This is made up of a thin metal with irregular holes. It is a useful tool to protect the rest of the drawing when clearing up smudges, unnecessary pencil lines and other erasures.

What do you need to know about erasing Shields?

Erasing shields protect areas of a drawing that you do not want to erase. They are made of a light gauge, spring metal with numerous openings in variegated shapes and sizes. Home Science Math and Arithmetic

What kind of eraser do you use for drafting?

Erasers are available in either block form or stick form inserted into a holder much like a leadholder (Figure 2-10). Vinyl and other plastic erasers are designed for use on plastic drafting film. Electric erasers are extremely useful when a great amount of erasing is necessary.

What kind of eraser do I need for vellum?

A good eraser must be capable of completely removing pencil or ink lines without leaving smudge marks or roughing the surface of the paper. For vellum drafting paper, soft rubber erasers should generally be used.