Has anyone used these ? I was browsing through their site and found this idea, Corrugated knives made with holes to fit Williams and hussey style molders so they can serve double duty in a corrugated head on a shaper or a W and H moulder. I have the shaper and corrugated heads as well a a G.I. molder . I have been following the other thread on corrugated heads/knives and was wondering if the grinding angle would be the same for both machines ? Thoughts .