Cine-film projection : a practical manual for users of all types of 16-mm. (1952)

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The examiners at one film library recently informed a new client that "We have carefully examined the test film . . . and suggest that you carefully service the whole projector!" If the test film is returned in perfect condition the client is then allowed to join the library. Even so, the films are always examined on return, and at the first sign of damage the client is informed that he must service his projector before he can have any more films, and not until his machine has been given the O.K. will he be placed on the hiring-list again. The system has much to be said in its favour, for not only does it directly prevent mutilation, it also helps to educate the careless operator. All of which is meant as a warning—a warning to look after the films in your care and at all times to handle them with the greatest of care. Splicing a Film In the following instructions, it is assumed that the operator is in possession of a splicer fitted with the usual number of work- ing parts. These are—a flap or other device for holding one or both parts of the film in position, a cutting edge or edges, and an attached but moveable scraper. i. Clean the splicer, the cement brush, and the table or bench on which you are working. Loosen the stopper of the film- cement bottle, but do not remove it until you are about to use the cement. 2. Place the film in the splicer with the emulsion (dull) side up, engage the perforations with the locating pins, and close the flap or other device which holds the film in place. 3. Next, snap down the cutting edge(s), but before proceeding make sure that both ends of the film are cleanly cut from edge to edge. (Many splicers are designed so that both ends of the film may be inserted and cut at the same time, and also allow one part of the film to be lifted clear in its holder while you carry out the next operation.) 4. The next thing is to remove the emulsion by scraping, but do it gently and smoothly, and without scraping the film right through. The scraping finished, lift the scraper clear and remove the emulsion dust by blowing. (Some people advocate moisten- ing the exposed edge of the film before scraping it, which will help if your scraper is not so efficient as it should be. Wipe the film before proceeding.) 68