the low vacuum section 30 as the stock travels with the forming fabric 105 it encounters the adjustable angle and height foil blades at various points along the dewatering table to manipulate the paper web and orient more fibers in a desired direction on the forming board section 10 and the hydrofoil or gravity section 20 the adjustable angle foil blades generate a vacuum pulse that dewaters the stock slurry the amount of drainage produced along each adjustable angle foil blade is determined by the angle setting of the foil blade which can be typically varied between 2 and u2212 4 degrees a higher angle will produce more drainage also within the forming board section and hydrofoil or gravity section of the papermaking process the stock encounters adjustable height foil blades these blades also drain water from the stock slurry the amount of water drained by the adjustable height foil blades is determined by their height setting in relation to the forming fabric at a setting of u2212 5 mm they do not touch the fabric and do not drain any water at a setting of 0 mm they are in the same plane as the forming fabric and will drain water as the adjustable height foil blades are lowered from the fabric the amount of drainage increases up until a point at which the static and dynamic vacuum forces generated by the adjustable height foil blade are overcome by the tension forces of the forming fabric when this occurs the fabric breaks its seal with the adjustable height foil blade and no dewatering occurs the setting at which this occurs will vary based on the drainage.