The Newman G-280 Rotary Knife Grinder is recommended for precision grinding of chipper, planer and other specialty knives that require making a straight pass across the face of the knife. The unique design of these grinders provides a rotating disc with four adjustable bars for grinding bevels from 25 to 40 degrees. It is also equipped with inside bars for grinding planer knives on a fixed 30 degree bevel. Various knife stacking features are available.