Generally discussed herein are systems and apparatuses that can include a releasable core panel. The disclosure also includes techniques of making and using the systems and apparatuses. According to an example a technique of making a releasable core panel can include (1) arranging a mask on a center portion of the panel, the panel including a center stiffener with a first foil attached to a first side of the center stiffener by a first adhesive layer and a second foil attached to a second side of the center stiffener by a second adhesive layer, the first side of the center stiffener opposite the second side of the center stiffener, (2) removing portions of exposed edges of the panel, and (3) removing the mask.