Keywords: Whipsaw03.JPG en Diagrams of two whipsaws from old catalogue http //chestofbooks com/home-improvement/workshop/Turning-Mechanical/Rectilinear-Saws-Used-By-Hand-Part-2 html Turning And Mechanical Manipulation Charles Holtzapffel 1806 “1847 1856 PD-old Whipsaws Charles Holtzapffel |