Creative gestures inspired in mathematics and geometry, that give form to outdoor fireplaces made of cast iron. The plate, an essential element of the ensemble, is designed in accordance with the parabola mathematical function, and the base is a geometric representation of the sine function. An ecological and sculptural object where form follows function, fostering conviviality and socialization. The rigour of the sine function confers an unparalleled geometric fluidity to the structure. A compliment to the harmony between aesthetics and craftsmanship.