doc. 92 How to make diamond saws The saw plate is 8-12 in diameter To be of soft iron. Saw must fit tightly on the shaft and not loosely or that it will rattle. Then for the diameter of the plate must be mach all around other wise the plate will damage and will fly out. Can be had of Max Boltz, Bonn, Germany. Knock with a knife the edge of the plate. Knocks to be as close as possible and about 1mm. deep, straight over the plate and not at an angle. Pulverize best finely in a mortar and mix with as little roorline on a flat plate as possible. Put in the mixture with the finger and then with the trolley. (dust it with the iron nail.)