The invention relates to pieces which are produced by sintering and which have well-differentiated surface finish areas including rough areas resulting from the sintering process, the roughness being determined by the size of grain used in sintering, and polished areas that have undergone a three-dimensional machining process. After obtaining a file containing a representation of the piece to be produced, the method comprises: selecting the parts to be raised； producing the piece by means of sintering； and subsequently subjecting the piece or pieces to automatic, semi-automatic or directed programming generation so that, by means of machining, the raised parts are reduced. Consequently the resulting piece is economical in terms of costs and exhibits a very high degree of precision in the machined areas, a tolerance 9, and improved finish, texture and finishing in the sensitive areas of the piece.
