A method for producing a selective diamond-coated substrate, wherein the selective diamond-coated substrate comprises: - a substrate having surfaces comprising cemented carbide material and having areas of the substrate surfaces selected to be coated and areas of the substrate surfaces that are not selected to be coated , and - one or more diamond coatings deposited on the areas of the substrate surfaces selected to be coated , the method includes following steps: - one or more chemical pre-treatment steps, in which Co binder is removed from the cemented carbide material comprised in the substrate surfaces, and - one or more coating steps, in which one or more diamond coatings are deposited on the areas of the substrate surfaces selected to be coated , characterized in that , the method further includes following steps: - a first masking step, conducted before conducting the one or more chemical pre-treatment steps, wherein in the first masking step the areas of the substrate surfaces that are not selected to be coated but could be chemically attacked during conduction of the one or more chemical pre-treatments steps, are masked by applying a latex-mask covering these areas for avoiding any chemical attacks of the substrate material in these areas , - mask-removing step, conducted after conducting the one or more chemical pre-treatments steps and before conducting the one or more coating steps, in which the latex-mask is completely removed, - a second masking step conducted before conducting the one or more coating steps, wherein in the second masking step the areas of the substrate surfaces, from which the latex-mask was removed and are not selected to be coated but could be coated with one or more diamond coatings during conduction of the one or more coating steps, are covered with one or more masking-covers for avoiding deposition of any diamond coatings on these areas. - a substrate having surfaces comprising cemented carbide material and having areas of the substrate surfaces selected to be coated and areas of the substrate surfaces that are not selected to be coated , and - one or more diamond coatings deposited on the areas of the substrate surfaces selected to be coated , - one or more chemical pre-treatment steps, in which Co binder is removed from the cemented carbide material comprised in the substrate surfaces, and - one or more coating steps, in which one or more diamond coatings are deposited on the areas of the substrate surfaces selected to be coated , - a first masking step, conducted before conducting the one or more chemical pre-treatment steps, wherein in the first masking step the areas of the substrate surfaces that are not selected to be coated but could be chemically attacked during conduction of the one or more chemical pre-treatments steps, are masked by applying a latex-mask covering these areas for avoiding any chemical attacks of the substrate material in these areas , - mask-removing step, conducted after conducting the one or more chemical pre-treatments steps and before conducting the one or more coating steps, in which the latex-mask is completely removed, - a second masking step conducted before conducting the one or more coating steps, wherein in the second masking step the areas of the substrate surfaces, from which the latex-mask was removed and are not selected to be coated but could be coated with one or more diamond coatings during conduction of the one or more coating steps, are covered with one or more masking-covers for avoiding deposition of any diamond coatings on these areas. <EOS>