 So frustrated was Chabaneau by his research that , in 1786 , he lost his temper and smashed all of his equipment , exclaiming , " Away with it all ! I 'll smash the whole business ; you shall never again get me to touch the damned metal ! " Nevertheless , three months later Chabaneau presented the Count d 'Aranda with a 10 cm cube of pure malleable platinum . His process , involving powder metallurgy and intense heating , was kept secret until 1914 . 
