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Does anybody have a formula or spread sheet to calculate the number of feet of material on a core if you know the OD of the core, the thickness of the material and the outside diameter of material on the core? I have to measure the amount of material left on the core and don't want to have the un roll each one. The cores are about 6 inches OD with about a half inch of material on the core making the diameter over the material about 7 inches. The materials vary in thickness from a few mils to 1/64
James Bouchard
Montreal
James Bouchard
Montreal