The bane of window owners and restorers alike are windows that are painted shut. A necessary first step to restoring sash or even getting them to operate at all is to free the sash. The uppers get “fixed” to the exterior casing or blind stop with paint and the lowers become similarly fixed to the interior stop. This Window Opening Tool is laid up against the sash and is used to “saw” through the accumulated layers of paint to release the sash. In some cases that and a quick swipe with some Bowling Alley Wax is enough to make a balky window function well for the first time in decades, in other cases it’s the first step in a more involved restoration process. In either case, this inexpensive tool will pay for itself many times over!