The book pays careful attention to the activity of planning as a unique quality and ability of human beings, it addresses the idea of integrating freehand drawing as the main knowledge of drawing applied in the design and representation of objects through the technical sketch in the process of its construction and confection, mainly of objects with irregular profiles: silhouettes with / or without openwork in its interior and also allows to be applied and performed in each of the areas of study (paper, cardboard, fabrics, wood, metals, etc.) where the figures are obtained through templates that can be drawn, traced and then managed to be enlarged or reduced in relation to the original figure by using the grid method.) where the figures are obtained through templates that can be drawn, traced and then managed to be enlarged or reduced in relation to the original figure through the use of the grid method.