The invention relates to a method for producing adaptive ear pieces with heterogenic material characteristics, based on solid free-form production technology that uses 3D printing combined with CAD. According to said method: at least two or more modelling materials and at least one support material are applied in layers or strands to a backing that has been provided by means of a computer-controlled application device; once applied, one or more strands/layers are smoothed with a planarizer and then cured using actinic radiation prior to the application of the next strand(s) or layer(s). Each strand or layer of the modelling material consists of a polymerizable formulation, which can be processed in its unpolymerized state by the application device.
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