A walking stick is an external help to maintain balance and maintain mobility during the walk of a person who is recovering from an injury to one of his legs. In this paper the analytical method is described for determining the length of pipe needed for the manufacture of a cane custom design, using basic math such as calculating perimeters and trigonometry, as a training exercise for students of mechanical engineering who take the course theoretical and practical manufacturing process because they start the course with deficiencies in basic math. It also briefly describes the use of Autocad software for this purpose. To design the stick, geometry and material commercial canes were considered, and anthropometric measurements of the palm of hand and height to the stick were taken. For a stick 830 mm height and 90 mm grip, a length of 967.14 mm tube is required.