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Study Says RepRap Self-Replicating 3-D Printer Achieves Return On Investment
A study reporting on the life-cycle economic analysis of a general-purpose RepRap, which is a self-replicating 3-D manufacturing machine. quantified economic costs of printer use from a selection of twenty open-source printable designs typical of products that a household might purchase for print time, energy, and filament consumption and compared them to low and high Internet market prices for similar products without shipping costs.
http://perceptionisrealityshow.wordpress.com