THE STRAINER.
The strainer, on which crayon paper or any kind of photographic enlargement is to be mounted, should be the same size as the intended picture. The frame is made of four strips of pine wood, two inches wide, one inch thick on the outside, and three quarter inch on the inside, making a quarter inch bevel on the inside edge of the face; these are nailed together and glued. To this, tack a piece of bleached muslin, free from knots and rough places, which has been cut two inches larger each way than the frame. Use six ounce Swede upholsterers' tacks, placing one in the centre of the outside edge of one side and another directly opposite, stretching the muslin as firmly as possible with the fingers. Then place a third tack in the centre of the outside edge of the top, and a fourth in the centre of the bottom of the frame, stretching as before. In finishing, use the pliers in addition to the fingers, and remember that you must always stretch from the centre towards the corner or you will have wrinkles in the muslin. As this process should be thoroughly understood, I will give minute directions for completing the operation. Having already placed the four tacks as above, stand the strainer on its bottom edge on the floor, with the back towards you, and put in the fifth tack two inches to the right of the third, that is, the one on the top previously mentioned. Instead of stretching the muslin directly back in a straight line towards you and at right angles to the fourth tack, you must draw it with the fingers towards the right hand corner. Then finish stretching, and tacking this edge to the right hand corner of the top, placing the tacks two inches apart and taking care to only draw the cloth sufficiently to have it perfectly smooth and straight on the edges, leaving the stretching to be done with the pliers; then turn the strainer on the side edge and tack at two inch intervals from the centre of the other (that is the upper) side to the right hand corner, same as before, and then tack half of the bottom edge and half of the other side in the same way. You will observe that you now have only one half of the muslin tacked—that is, one half on each edge—and you then complete the tacking, using the pliers to thoroughly stretch the muslin. This method has the advantage that you can stretch the muslin on the strainer and get it on better and in less than half the time required by the old method; also that you stretch the whole surface of the muslin with the pliers, and do it with only half the work.
MOUNTING CRAYON PAPER AND PLATINUM
AND SILVER ENLARGEMENTS.
Wet in clean water a piece of muslin about two inches larger each way than the paper you intend to mount, and lay it on the mounting board or table, removing all the wrinkles with a wet brush; then place the paper on this cloth, face down, and with some water and a brush, wet the back of the paper, continuing to use the brush until all the wrinkles are entirely smoothed out and the paper lies down perfectly flat. Any number of pieces of paper can be wet at the same time by placing one over the other, provided the larger sizes are laid down first and each is brushed out flat before another is placed over it. Let the paper soak for about fifteen minutes.
After having removed the surplus water from the paper with a cloth, sponge or squeegee, apply starch paste to the paper with a paste brush, going over it thoroughly, until it has received an even coat of paste free from lumps. Then lay one of the back-boards on a table and, having placed the strainer down on it face up, give the cloth of the latter a coat of paste, using the same care you did in going over the paper, taking pains to have the edges of the cloth well pasted, and to remove, by passing your finger all around the outside edges of the strainer, any paste which may be there. Now pick the paper up and place it on the pasted surface of the strainer, which an assistant should hold tipped towards you. (The help of an assistant will be found almost indispensable in mounting). After the paper is in the proper place, lay the strainer down and secure each corner of the paper, by first lifting it slightly and then rubbing it down with a clean cloth from the direction of the centre towards the corner you have lifted up. With a sharp knife trim off the edges of the paper and set it away to dry, but neither near a fire nor in too cold a place. You can very often save the remounting of a paper by occasionally glancing at it as it dries and by gently rubbing down a little with the fingers any places that look as if they would not stick. Very often the paper will be all right with the exception of this difficulty at one edge or corner. This is invariably the lower part, and is caused by the water settling there. It is therefore advisable to change the position of the strainer two or three times as it dries, letting it stand on different edges.
After the paper is dry, if there are any places that have refused to stick fast to the cloth, it will be 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.