Why Rotary Slitter Knives Remain the Backbone of Precision Cutting Having spent a fair bit of time in the industrial equipment trenches, I can tell you that rotary slitter knives often don’t get the spotlight they deserve. Oddly enough, these modest circular blades quietly run the show when long, continuous material processing is involved—whether it’s paper, plastics, metal foils, or textiles. They’re the unsung heroes in conveyor lines, chopping up webs of material with surgical precision. One thing I’ve noticed over the years is that efficiency almost always boils down to the blade quality a…