Copying is frequently necessary. The artist cannot always go to nature. It happens frequently something has to be introduced in a picture for which the artist cannot conveniently go to nature, and which, even if he had the most prodigious memory, he fails sufficiently to bring to mind. Suppose the artist should want to introduce a camel into a picture. He may remember the general outlines sufficiently to render the shape so that it would not be mistaken for a girnffe or a billy goat. What does he do? Why, he goes to his scrap book, into which he has pasted his pictures of animals, clipped from illustrated periodicals, and perhaps he will find the animal he wants exactly in the required position. He adopts the camel into his picture. He has simply borrowed a camel without permission, knowing the counterfeit quadruped will not be missed.
How to Stretch Paper
There are several methods of stretching paper, of which the following two are the simplest.
A simple frame of wood is used, an inch or so wide, and about three-
quarters of an inch in thickness, according to the size of the drawing. This is covered with muslin, tightly stretched and tacked at intervals of one inch all along the sides, turning the muslin over to the outer edges, not on the face of it, which should present a perfectly smooth, flat surface.
The paper should be cut the proper size, that is, as large as the muslin has been cut, and then dampened on the wrong side by means of a sponge or clean cloth dipped in cold water. There should be just enough moisture in the sponge or cloth to enable one to pass it rapidly over the surface of the paper, wetting it evenly. The sponge, or whatever is used, should not be dripping with water. Before this is done, however, have at hand some good flour paste or prepared library paste (many prefer the liquid ^lue) and put this all around the edge of the paper to about the width of the frame. Next spread the paper while still damp upon the muslin covered stretcher, starting at the bottom and working upward, carefully smoothing out all creases or air bubbles. Turn the frame over and press down the edges of the paper, which have been covered with the paste, holding them until they stick to the cloth. Cut a V-shaped piece from each corner of the paper, so that it will fold over neatly. This operation requires time and experience to do well, but is worth the trouble.
The second method is the same as the first, except that no frame is required, the paper being pasted directly on the board. The outer edges of the paper should be pasted along the edges from a half to one inch in width, according to the size of the drawing.
Erasing Mask
Take a piece of cardboard, a business card is excellent for the purpose; cut slits in it of varying sizes and use them as stencils (only in this case the pigment is removed instead of applied). If a larger surface is to be erased the part to be preserved may be protected
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