Tomás Sáiz Castillo is a master glassmaker, born in Bárcena de Pie de Concha. He carries out both new pieces and restoration and elaboration of replicas. 

For the manufacturing of a stained glass window, in the first place, Tomás Sáiz studies the ambience, the light and… the setting in which it is going to be placed. He carries out a 1:1 scale drawing on paper and chooses the colour tones and the type of glass he is going to use in order to carry out the piece (it can be industrial, semi-artisanal or blown). One he’s done this, he carries out the template and cuts the glass. Once the pieces are already assembled, he paints them over a light table. After that, he puts them in the oven and, once the pieces are fired, he goes on leading up them.