A method for operably adjusting a forming board lead blade of a paper sheet forming machine of the type having a headbox for impinging a jet of slurry from a slice opening of the headbox onto the surface of a porous wire moving continuously in a horizontal machine direction over the forming board.

An adjustable foil apparatus for use with a paper making machine includes an elongated upper assembly having a forming element positionable relative to a forming fabric of a paper making machine and an elongated base mountable to a paper making machine. The upper assembly being coupled to the base and movable relative thereto for adjusting an overall height of the foil apparatus, the forming element being configured for selective movement toward and away from the forming fabric of a paper making machine. The adjustable foil apparatus including an adjustment mechanism fixed to the base, the adjustment mechanism including a slide bar movable relative to the base along an axis of the base and configured to move the forming element relative to the base and toward and away from the forming fabric.