NOVELTY - A processing apparatus (10) designed to enable a reaction or combustion of fluid flowing through the apparatus comprises several metal layers, where at least two of the metal layers are stacked and aligned together and connected together by metal laminate (82, 84), where at least two of metal layers include opening, where the opening spaced from an outer edge of the metal layers, the openings of adjacently positioned metal layers forming fluid channel through the metal layers that is designed to enable fluid to flow through the fluid channel when the metal layers are connected together.    USE - As a processing apparatus (claimed), used in chemical applications, biological applications, and energy applications; in the reaction of specialty chemicals for the pharmaceutical industry; chemical, biological, food, and pharmaceutical industry; and for production of energy (e.g. fuel cells (e.g. direct oxidation fuel cell, reformer fuel cell), solar cells, automotive fuel production from natural gas (e.g. Fischer-Tropsch process), methane processing, methanol production (e.g. methanol from carbon dioxide and hydrogen), coal gasification processes, hydrogenation processes), propulsion systems (e.g. rocket engines), environmental waste processing (e.g. pollution and waste control systems, landfill gas processing, methanol production, reduction of bio-waste, water purification systems, emissions control, biomedical applications (e.g. enzyme production), heat exchange application, and micro-machining techniques (MEMS) technology.    ADVANTAGE - The method enables the formation of a processing apparatus having a small but intricate and complex three-dimensional passageway system through the processing apparatus. Such intricate and complex three-dimensional passageway system can be used to achieve a high reaction surface area to strength ratio; and can be used for other or additional reasons. The method also enables the materials passing through the processing apparatus to be exposed to multiple catalysts as the materials pass through the processing apparatus, if such a configuration is desired. As a result, the processing apparatus can be used to eliminate the need for multiple reactor vessels in a refinery. Increasing chemical production by use of the processing apparatus merely requires adding additional processing apparatus to the system. As a result, the processing apparatus eliminates the need of installing large vessel reactors online to anticipate increased demand in the future (which large reactors result in underutilization of the reactor). The chemical processing performed by using the processing apparatus is safer, cleaner, more accurate and efficient at the pressures and temperatures as compared to larger reactor vessels. The processing apparatus creates a high efficiency heat exchanger.    DETAILED DESCRIPTION - A processing apparatus (10) designed to enable a reaction or combustion of at least one fluid flowing through the processing apparatus comprises several metal layers, at least two of the metal layers are stacked and aligned together and connected together by at least one metal laminate (82, 84), at least two of the metal layers include an opening, where the opening spaced from an outer edge of the metal layers, the openings of adjacently positioned metal layers forming at least one fluid channel through the metal layers that is designed to enable fluid to flow through the fluid channel when the metal layers are connected together, several metal layers include at least one alignment structure, the aligned structure is spaced from the opening in the metal layer and not forming the fluid channel, the alignment structure is positioned in substantially the same location on each of the metal layers, the alignment structure is spaced from an outer edge of the metal layers. An INDEPENDENT CLAIM is included for a method of manufacturing at least portion of a metal device for use in a fluid reactor, where the metal device is designed to allow fluid to flow through a fluid passageway in the metal device involving: providing several one piece metal foil layers; forming several one piece metal foil layers into specific shapes, at least two of the one piece foil layers include several fluid openings through the one piece metal foil layer, where the fluid openings are designed to formed a portion of the fluid passageway, several metal layers include at least one alignment structure, where the aligned structure is spaced from the opening in the metal layer and not forming the fluid channel, where the alignment structure is positioned in substantially the same location on each of the metal layers, the alignment structure is spaced from an outer edge of the metal layers; stacking and aligning several of the formed one piece metal foil layers such that the formed one piece metal foil layers contact one another, the fluid openings in the formed one piece metal foil layers form the fluid passageways, each of the fluid openings in the formed one piece metal foil layers is at least partially aligned with the fluid openings in an adjacently positioned formed one piece metal foil layers; and connecting together the formed one piece metal layers to form at least a portion of the metal device, where the fluid passageway only formed by the fluid openings.    DESCRIPTION OF DRAWING(S) - The figure shows a cross-sectional view of the processing apparatus.    Processing apparatus (10)    Connection extensions (12, 14)    Pipes (20, 22)    Connectors (30, 32)    Top portion (40)    Bottom portion (50)    Middle portion (60)    Single passageways (46, 69)    Metal laminate (82, 84)