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CUTTING THE ORIGINAL 351
is made by certain of the Bell and Howell laboratory splicing machines. This splicer has found some favor for 35-mm sound track, but not equally for 16-mm sound track. A diagonal splice should never be used in an original film ; opinion as to its use in release prints is divided, since the splice appears diagonally across the frame of the picture and causes a "flash" on the screen as it passes through the picture gate of the projector. The present trend seems to be away from diagonal splices in 16-mm.
Film Cement
To splice film requires film cement. Because of the differences in chemical composition and properties, film-base materials made by different manufacturers do not adhere equally well when cemented with different film cements. Eastman safety film cement should be used for Eastman film ; for other films, information may be obtained by writing the manufacturer.*
Cutting the Original
Cutting the original to match the edited work print is done with gloves — in both the figurative and in the literal sense. The original is never handled with bare hands because of the dirt, oil, and other contaminants always found on even the cleanest hands ; a pair of clean, soft, washable, cotton gloves is used. An active editor will use several pairs of gloves in a day, making certain that the gloves are carefully laundered once they have been used. Needless to say gloves should be lint-free so that there will be no foreign matter present which may affect the original film. If all editing has been very carefully done and all film in the work print and all related film in the original can be identified, it is better practice for the inexperienced not to touch the original at all. It should be taken to the commercial film laboratory for assembly and cutting of the original. It is customary to charge for such labor at a cost of several dollars per hour, but it is well worth it. Experience in handling film may be acquired by watching the laboratory personnel, who are active and quick and who have through experience worked out a number of rule-ofthumb methods of handling film with the least effort and with the least film damage. Care should be exercised that the film is left only in a spotless plant that has spic-and-span personnel.
* The excellent Eastman booklet The Handling, Repair, and Storage of 16-Mm Films (KP 2-45) should he in the hands of anyone who has occasion to make splices.