Abstract : Applying cutting fluid in machining is a typical case, inevitable in grinding, cooling down the tool, prolonging tool life, and gaining a smoother surface. However, the petrol-based cutting fluid may harm the operator, and after being used, residue may damage the environment. This research attempts to reduce those harmful effects using petrol-based cutting fluid by applying a renewable and non-edible one made of Calophyllum Inophyllum, then studying the machined surface's surface integrity in th