A process for preparing an article which comprises a thin-walled metal tube, wherein the thin-walled metal tube comprises an amorphous metal alloy, wherein the thin-walled metal tube has an outer wall surface, an inner wall surface, and a bulk part in between the outer and inner wall surfaces, and at least the thin-walled metal tube is prepared by additive manufacturing using laser or electron beam melting, comprising (a) applying a layer of a metal powder on a substrate, (b) scanning pre-defined areas of the layer with the beam, thereby melting the metal powder which becomes part of the thin-walled metal tube, wherein the scanning comprises (b1) moving the beam along an outer wall surface scanning line SLows, thereby melting the powder which is located at the outer wall surface of the thin-walled metal tube; (b2) moving the beam along an inner wall surface scanning line SL IWS , thereby melting the powder which is located at the inner wall surface of the thin-walled metal tube; (b3) moving the beam along bulk scanning lines SL Bulk , thereby melting the powder which is located in the bulk part of the thin-walled metal tube, wherein the bulk scanning lines SL Bulk comprise (b3.1) one or more offset scanning lines SL OWS-offset which are offset from the outer wall surface scanning line SLows, and (b3.2) one or more offset scanning lines SL IWS-offset which are offset from the inner wall surface scanning line SL IWS . (a) applying a layer of a metal powder on a substrate, (b) scanning pre-defined areas of the layer with the beam, thereby melting the metal powder which becomes part of the thin-walled metal tube, wherein the scanning comprises (b1) moving the beam along an outer wall surface scanning line SLows, thereby melting the powder which is located at the outer wall surface of the thin-walled metal tube; (b2) moving the beam along an inner wall surface scanning line SL IWS , thereby melting the powder which is located at the inner wall surface of the thin-walled metal tube; (b3) moving the beam along bulk scanning lines SL Bulk , thereby melting the powder which is located in the bulk part of the thin-walled metal tube, wherein the bulk scanning lines SL Bulk comprise (b3.1) one or more offset scanning lines SL OWS-offset which are offset from the outer wall surface scanning line SLows, and (b3.2) one or more offset scanning lines SL IWS-offset which are offset from the inner wall surface scanning line SL IWS . (b1) moving the beam along an outer wall surface scanning line SLows, thereby melting the powder which is located at the outer wall surface of the thin-walled metal tube; (b2) moving the beam along an inner wall surface scanning line SL IWS , thereby melting the powder which is located at the inner wall surface of the thin-walled metal tube; (b3) moving the beam along bulk scanning lines SL Bulk , thereby melting the powder which is located in the bulk part of the thin-walled metal tube, wherein the bulk scanning lines SL Bulk comprise (b3.1) one or more offset scanning lines SL OWS-offset which are offset from the outer wall surface scanning line SLows, and (b3.2) one or more offset scanning lines SL IWS-offset which are offset from the inner wall surface scanning line SL IWS . (b3.1) one or more offset scanning lines SL OWS-offset which are offset from the outer wall surface scanning line SLows, and (b3.2) one or more offset scanning lines SL IWS-offset which are offset from the inner wall surface scanning line SL IWS . <EOS>