A wood burning furnace providing, in sequential connection, an air box, a fire box with a wood storage boxprimary combustion chamber and a secondary combustion chamber separated by an ash grate, a heat exchanger, an exhaust manifold, and a smoke stack. Associated therewith is a graphics application specific integrated circuit for performing graphics processing in accordance with a graphics processing standard. The hub employs a plurality of one piece \u201cforked plugs\u201d each containing a cylindrical plug with two tangs and an integral post connecting the tangs allowing the forked plug to rotate. This relative movement reduces the stiffness of the diaphragmliner assembly. An output device is actuated by the tracking device as it crosses the planar surface, reproducing the series of points as an image onto a surface, including a flat, curved or compound surface. After repeating the steps, coverage for the validation vectors is determined in accordance with the propagation to evaluate the one or more validation vectors.