Abstract: A method of treating metal working dies by the steps of: forming a metal working die part to be constituted of consolidated particulate material with a porosity in the range of 0.01-0.5%; immersing the part in a lubricant that is flowable under the working conditions of use for the die part, the lubricant being contained within a pressure chamber; raising the pressure within the chamber to 3,500 psi and the temperature of the lubricant to about 100.degree. C. for a period of time sufficient to allow the lubricant to migrate and be trapped within the micro pores of the part with a positive internal pressure; and placing into use the treated cold working die part so that such die part is subjected to shear, such use being without the need for burn in and redressing.