Relacionar Columnas Stones and ceramics IIIVersión en línea Technology in secondary school for spanish speakers por tekno TEKNESO 1 2nd Stage: 2 3rd Stage: 3 6th Stage: 4 1st Stage: 5 5th Stage: 6 4th Stage: Preparing process: Clay must be cleaned by removing traces of vegetable matter Glazing (vitrificado): It consists of giving a shiny and waterproof finish to the object through heat. It can also be finished by enamelling. Baking process: It consist of heating up the paste in a kiln at very high temperatures (700-1700ºC) Mixing process: It comprises to add water, anti-grease agents, fluxes and colouring Drying process: It consist of the removal of water by evaporation from the paste Modeling process: It comprises all shaping techniques