Abstract: An adjustable board stop made from a U-shaped bracket attached to an extension that supports a hinge and hinge pin attached to an L-shaped bracket that protrudes out over the middle section of the top surface of the U-shaped bracket and perpendicular down from the hinge pin adjacent to the U-shaped bracket. Using manuel or a mechanical means the L-shaped bracket that protrudes over the U-shaped bracket is lifted and pivoted so that the L-shaped bracket on the hinge clasps a rail in between the perpendicular end of the L-shaped bracket and the U-shaped bracket. This fixed pressure holds the adjustable board stop fast in place for use in board sawing.