Apparatus and methods for reinforcing an opening in a support member such as a joist. The interconnection system provides for an extremely low impedance through a broad range of frequencies and allows for large amounts of current to pass from one substrate to the next either statically or dynamically. One of the plurality of drop volumes is a minimum drop volume Vmin, and a difference in drop volumes between successively larger drops equals which is less than Vmin, for k equal to 1 through n\u22121. A layer of photoresist is formed over the annealed antireflective material layer.