This course is designed for nail technicians who already master the no-filing construction technique and want to take their skills further by learning how to maintain the square shape with precision and structure. You’ll learn how to perform a full refill and reshaping process without filing the surface – maintaining the architecture, proportions, and strength of the original application. We’ll cover how to assess the nail structure after growth, how to maintain the correct apex and direction, how to thin and clean the underside (C-curve), and how to preserve the perfect square lines – all while working clean, fast, and safely. This is not a beginner course. It’s a refined method, focused on speed, technique, and technical accuracy, for those who want real efficiency in the salon – without compromising aesthetics or resistance.