Bernhard Turf Technologies: Cylinder and Reel Sharpening ...
Hints and Tips: Express Dual. Before grinding. ... NEVER let a grind finish with the reel sparked out (little or no sparks as the stone traverses). The reel will be a true cylinder but the hollow ground blade tip relief that Express Dual applies will be lost. Always back off the handwheels at the end of grinding whilst good firm contact remains ...