Abstract: A wooden studwall is erected utilizing a hinge, of metal plate, having a bottom plate, two outer legs and a center leg extending from one side of the bottom plate so that the hinge can be aligned, along a chalk snap line located along the subfloor, where a wooden studwall is to be placed and the bottom plate and center leg can be nailed to the subfloor. The two outer legs, are bent up ninety degrees to the bottom plate, and are nailed to the underside of sole plate at the bottom of the stud wall so that when the wooden stud wall is raised the sole plate does not slip and is correctly aligned with the chalk snap line when the wooden stud wall is in the vertical position. The two outer legs may be left flat, parallel to the bottom plate, for safety reasons and then, after the bottom plate is nailed to the subfloor, bent up perpendicular to the subfloor and attached to the bottom sole plate of the stud wall.