How to add sound to amateur films (1954)

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To trim tape for splicing (above), place the two ends in contact, shiny side to dull. Then make one oblique cut across both tapes. Provided the cut is straight, the oblique ends will butt perfectly with the tapes in alignment. A simple guide block (right) makes splicing much easier. 6x2x^2 eTx&x cemented splice is as good as unbroken tape. Too little cement produces a weak splice, but too much causes cockling of the tape. Since a splice must leave the tape in good alignment, a simple guide block is a great help, no matter which method you employ. This you can make readily from two pieces of hardwood. A piece about 6 x 2 x \ inch forms the base on which you lay the tape. A second piece of wood, about 6 x | x | inch is glued or screwed to the side of the first and you push the tape against this to hold it straight. Choice of Tape Speed Because the tape is independent of the film, you can choose any nominal tape speed which provides an acceptable compromise in cost, quality and convenience. The majority of domestic recorders run at 1\ inches per second. At this speed, good equipment gives quality comparable with good disc recordings. So if you are drawing on discs for music and effects, there is little point in using a tape speed above 1\ inches per second. On the other hand, you can halve 73