Enhancing 3D-Printed Clay Models for Heritage Restoration Through 3D Scanning

Recent development of methodologies based on digital twins through 3D scanning and 3D printing has increased over the past decade, offering new possibilities in manufacturing, production and scaling of models’ applications. However, there are few examples of the application of model digitization technologies for the restoration of ceramic-built heritage by means of 3D modelling. That is why this research focuses on the application of these advanced methodologies to the recovery of architectural ceramic ornamental objects in heritage buildings. Deteriorated ceramic pieces are selected and scanned during field campaigns using 3D scanning technology in early 20th century heritage sites in Seville (Spain). The aim is to create accurate replicas of these damaged objects by 3D printing with clay using non-invasive techniques. The study stands out for its practical approach and its implications for the conservation of built cultural heritage. The results proved effective for replacing lost or damaged elements in a heritage context. Once the investment in the necessary equipment and technologies has been made, the use of clay as a material for 3D printing not only proves feasible but also offers advantages in terms of cost and time savings for repairs compared to traditional restoration techniques. In the present investigation the production time of similar pieces using 3D printing took 6.3–10.9 h while traditional methods take over a week. The application of these technologies represents an advancement in integrating modern methods into cultural heritage conservation, opening new possibilities for the preservation of history and art worldwide.