Anchoring in a construction model

A method for anchoring an anchoring element in an object with the aid of mechanical vibrations, which anchoring element comprises an axis and a plurality of anchoring element parts, of which a first anchoring element part comprises a material liquefiable by mechanical vibrations, which forms at least a part of the surface of the first anchoring element part, and a second anchoring element part comprises a material liquefiable by mechanical vibrations, which forms at least a part of the surface of the second anchoring element part, wherein the first anchoring element part comprises a central axial bore and the second anchoring element part comprises a central axial bore, and the method comprising the steps of:

• providing a bore in the object;
• positioning the first and second anchoring element parts relative to the bore;
• providing a tool having a proximal portion and a distal end portion;
• positioning the tool in contact with the first anchoring element part, wherein the tool comprises a portion reaching into the central axial bore of the first anchoring element part;
• coupling the mechanical vibrations into the tool and simultaneously pressing the tool against the first anchoring element part to cause a local expansion of the first anchoring element part, whereby the first anchoring element part is pressed at least locally against lateral walls of the bore
• and, due to the effect of the pressing and of mechanical vibrations coupled into the first anchoring element part from the tool, liquefying the liquefiable material of the first element at least partly, from a solid to a liquid state, to cause, after re-solidification, a positive-fit connection with the wall and a connection with the second anchoring element part.