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We ran across an experimental 3D printer developed years ago by Festo, a German industrial conglomerate. The iFab was designed in 2009 by Festo’s Bionic Learning Network, but seems to have never been marketed publicly.
The iFab is an early example of a non-cartesian 3D printer. “Cartesian” 3D printers use standard “X-Y-Z” movements as their method of transporting the extruder during printing. Non-cartesian 3D printers use alternative means and there are many different designs. One such non-cartesian design is the Delta Robot approach, also used by the DeltaMaker and Kossel Clear 3D printers – albeit years after the iFab’s creation.
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