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قراءة كتاب Crayon Portraiture Complete Instructions for Making Crayon Portraits on Crayon Paper and on Platinum, Silver and Bromide Enlargements

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Crayon Portraiture
Complete Instructions for Making Crayon Portraits on Crayon Paper and on Platinum, Silver and Bromide Enlargements

Crayon Portraiture Complete Instructions for Making Crayon Portraits on Crayon Paper and on Platinum, Silver and Bromide Enlargements

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دار النشر: Project Gutenberg
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impossible for you to remedy the matter, and you must remount it. You proceed, therefore, to remove the paper from the cloth. This you do by turning the strainer face down and filling the back of it with warm water, allowing it to remain there until you think that the paste has become thoroughly dissolved; then turn the strainer over and carefully remove the paper. If it should not come off readily, fill the strainer again with water, and soak it until it will come off. After you have removed the paper, lay it on a wet cloth, and with a case knife clean off the starch, using care not to injure the surface of the paper, and also clean off the starch from the strainer; then proceed to remount as before. When you once understand that you cannot spoil an enlargement on account of defective mounting, you will work more confidently. After you have tried three times to remount, and the paper still insists in not sticking, you must take a new strainer, as too many wettings will have spoilt the cloth and wood. Sometimes there seems to be a difference in the stretching qualities of the enlargement and cloth, which makes it impossible to produce a perfect cohesion. When, therefore, it has been remounted three times and does not come out perfect, your best course is to mount a piece of crayon paper on a new strainer, and after it is thoroughly dry to then mount the enlargement on that. This you do in the manner described for mounting in the first instance, directly on the strainer, except that you do not coat with paste the crayon paper already mounted.

It sometimes happens, that after the paper has been mounted and dried, it is discovered that lumps in the paste have caused defects to appear on the face of the paper in the shape of raised surfaces that unfit it for the intended purpose. These can be entirely removed by wetting the back of the strainer with some clean water immediately behind where the lumps of paste are, and with a knife scraping the cloth a little at these places; the surplus paste will work itself out through the cloth.

The starch paste used in mounting should not be made very thick; on the contrary, it should be as thin as is consistent with still retaining all its adhesive qualities. Should you fear that it is too thick or lumpy, strain it through a piece of cheese cloth. In a former edition of this book I advised adding to the paste a little white glue dissolved in warm water, but I do not now consider this necessary for crayon paper or photographic enlargements, and do not recommend its use except for mounting paper of unusual thickness.

The foregoing directions for mounting apply to platinum or silver enlargements, crayon or other kinds of paper, but not to bromide enlargements. The bromide paper requires a different method of handling on account of the gelatin surface, which when wet is destroyed by contact with any dry substance, as the latter removes the gelatin.

For determining the proper position of photographic enlargements (bust pictures) on the strainer, the following scale will be useful as a general guide. When the size of the strainer is 16×20, 20×24, 22×26, or 25×30 inches, the distances from its top to the top of the head of the portrait should be respectively 3-1/2, 4, 4-1/2 and 5-1/2 inches.


MOUNTING BROMIDE ENLARGEMENTS.

The first requisite for this is a water-tight tray, large enough to hold the enlargements. A hard rubber tray can be purchased, or a wooden one that will answer the purpose may be made. I use one of my own construction that is cheap and serviceable. It is simply a wooden box, 27×32 inches and 4 inches deep, made of 1/2 inch grooved material and lined with black oil cloth, not cut at the corners, but folded in. In this, when about half full of water, lay the enlargement face up, and let it remain in the water fifteen minutes. It should then be laid face down on the wet cloth (which should be all ready) as described in the preceding chapter, for mounting crayon paper. Care must be exercised to have the cloth wet all over, for if there should be any dry spots in it they would ruin the gelatin surface. With a cloth or squeegee remove the water from the back of the enlargement and also from the cloth around its edges, for if there is too much water on the edge of the cloth it will work up into the paste and prevent it from sticking when mounted. Now paste the enlargement and strainer according to the directions given for mounting crayon paper, place the enlargement on the strainer and rub it down by using the fingers wet in a little water, or the squeegee can be used; and then trim off even with the outside of the strainer. Avoid rubbing too hard along the edges, as by so doing you will press out all the paste and it will not stick.

You can remount a bromide enlargement as often as necessary in case it does not come out perfect, only bear in mind that you must not allow anything dry to touch the surface when wet. But I should not advise you to try more than three times directly on the strainer. It would be better to mount a piece of crayon paper on a new strainer, and after it is dry to remount the bromide enlargement on that.


OUTLINES—NEGATIVE OUTLINE.

After the crayon paper has been mounted on the strainer and dried, the next step is to obtain the outline. I will first treat of free-hand crayons, taking it for granted that the reader is not able to produce crayons from life, but works from a photograph. There are five different methods of making an outline, from which the reader can make his own selection.

NEGATIVE OUTLINE—DARK CHAMBER. From the Annual Encyclopedia. Copyrighted, 1891, by D. Appleton & Co.NEGATIVE OUTLINE—DARK CHAMBER.
From the Annual Encyclopedia. Copyrighted, 1891, by D. Appleton & Co.

Make a negative from the photograph that is to be enlarged, and construct for a room that is entirely dark, with the exception of one window, a dark inside shutter, with an opening in it the size of the negative you intend to use. Place a cleat on each side and at the bottom of this opening, so that the negative may be made to slide in front of it. Having removed the ground glass from your camera box, fasten the latter against the shutter so that the opening comes in the centre of the box. You can fasten it with four hooks and eyes, or arrange cleats on the shutter and pieces on the box, so that it will slide into place. Be sure and have the box come tight against the shutter so that the light will be entirely excluded. Place the negative over the small opening in the shutter and adjust the camera box; then stand the easel with the crayon strainer on it at the proper distance to give the required size of the enlargement and focus the image sharp on the crayon paper. The strainer must stand at the same angle as the shutter; that is, if the shutter is perpendicular then the strainer must stand perpendicular also. Then go over the outline and shadow lines with the charcoal, after which open the shutter and examine the outline and see if it is right. As you are working in the dark you are apt to overlook some lines. If you have done so you can close the shutter again and make

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