Francisco de Holanda Secondary School, located in Guimarães, is recognized for its commitment to pedagogical innovation and environmental sustainability. In the context of Eco-Digithon, students developed an automated plastic recycling system consisting of three machines: a shredder, an extruder, and a CNC. This project allows for the transformation of plastic waste into new useful materials, such as school supplies and works of art, promoting the circular economy and environmental education.