a string like shape and rolled up like a ball of twine there would be a similar unrolling process as in i a iii above b methods in which small pieces are cut off of the large block i a guillotine like apparatus cuts small slices of solid fuel off of a rectangular margarine stick shaped block of fuel the slices fall onto a conveyor belt which transports the fuel to a melting chamber the advantage of situating the melting chamber distant from the guillotine is the greater separation of the far more combustible liquid fuel from the less combustible solid fuel alternatively rather than transporting the slices to a distant location they could be melted near the cutting apparatus ii same concept as i b i but the frozen fuel element is cylindrical rather than rectangular slicing is carried out perpendicularly to the central axis of symmetry of the cylinder i the fuel is cylindrical in shape it rotates continuously about its central axis of symmetry a cutting blade like a cheese knife is applied to the surface which cuts off a continuous ribbon of fuel the fuel is processed as in i a iii above ii the fuel is stored as a large number of small pieces to be used as needed a the fuel is shaped in cubic or rectangular blocks these are arranged in a 3 dimensional grid a series of.