The present invention relates to a method for manufacturing a 3D article (1) by means of 3D printing, the method comprising the steps of: a) printing a 3D structure (1′) extending in a first plane and comprising a first surface (4) and a second surface (4′) being opposite to the first surface (4); b) cooling the 3D structure (1′); c) heating the one of the first and the second surfaces (4, 4′) of the 3D structure (1′); d) deforming the 3D structure (1′) in a second plane deviating from the first plane, such that a 3D article (1) is obtained; c) cooling the 3D article (1).