The desire to re-slit wide magnetic tape into 1/2-inch or 1/4-inch widths is frequently expressed. Usually the quantities involved are insufficient to warrant an elaborate device and simple devices fail to produce satisfactory results; however a large supply of 3/4-inch instrumentation tape supplied the author with an incentive for a serious effort to design a re-slitter to convert this into 1/2-inch wide tape. This paper describes the design and operation of the re-slitter. Width variations were held to ±0005 inch, well within instrumentation tolerances. A drop-out check showed the tape to be satisfactory for re-use as instrumentation tape.
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