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A far more useful variant, thomas sabo rings uk called the Kiloton powder metal sintering process, uses the rubber molds to generate metal tools. Brought to life by 3M and from now on owned by 3D Systems, the Kiloton process consists of filling the rubber molds with powdered tool sword and epoxy binder. If the binder cures, the "dark-green" metal tool is taken away on the rubber mold after which sintered. At this stage the metal is 70% dense, so it is infiltrated with copper to create it near its theoretical maximum denseness. The tools have fairly good reliability, but their dimension is tied to under 25cm.