Assembly and method for creating a 3D structure

A method for creating a 3D structure, comprising the steps of:

• providing a layer of non-solidified particulate construction material to be applied over a construction site (6), wherein the non-solidified particulate construction material applied layer- by-layer is at least partially compacted and the 3D structure is created by a partial physical or chemical hardening process or a melting process,
• point-by-point compressing the non-solidified particulate construction material applied layer-by-layer using a compressor element (2) arranged in a compressor assembly (1) having at least one cutting edge, wherein a width of a cutting edge disposed at one end of the cutting edge, which during a compression process is in contact with particles (11) of the non-solidified particulate construction material, is in a range between 0.01 mm and 0.6 mm;
• and
• imparting on the compressor element (2) a linear movement (12) with a driver connected to the compressor element (2).