This paper presents mechanical R&D for the CALICE Silicon-tungsten electromagnetic calorimeter. After the physics ECAL prototype, tested in 2006 (DESY-CERN), 2007 (CERN), 2008 (FNAL) and before the design of different modules 0 (barrel and endcap) fo
r a final detector, a technological ECAL prototype, called the EUDET module, is under design in order to have a close to full scale technological solution which could be used for the final detector, taking into account future industrialisation of production.
