Abstract: A supporting frame for a piece of furniture, wherein the supporting frame includes at least one outer side, and wherein the supporting frame is made out of one continuous piece of material. The supporting frame including several layers, wherein each layer includes one and the same single continuous piece of material in the entire extent of the layer and wherein each individual layer is contiguous with at least a second layer. Hereby, improved manufacturing, a stronger supporting frame and a wider range of useful materials for supporting frames are obtained.