Digitalreproduction of historical building ornamental components: From 3D scanning to3D printing

Jie Xu, Lieyun Ding ,Peter E.D.Love

A combination of the three-dimensional (3D) scanningand cement mortar-based 3D printing technology is used to develop a novelprocess for reproducing a historical building ornamental component, which istraditionally labor intensive and expensive to construct. A hierarchicalalgorithm for model slicing and a modified scan line algorithm for nozzle pathare developed and presented. To demonstrate the feasibility of the proposeddigital reproduction process, a damaged cup-shaped individual plinth from thecampus at the Huazhong University of Science and Technology (HUST) in China, is3D scanned, re-modelled, and re-constructed using specific 3D printing technology.An estimation is implemented to the fa?ade of the printed plinth as well as thescanning accuracy. The compressive strength of the printed plinth is tested andcalculated, which resulted in 19.8 Mpa and 15.6 Mpa for its vertical andlateral directions, respectively. The reproduction evaluation indicates thatthe developed process provides the foundation and impetus for future work inthe area of the digital reproduction of historical building ornamentalcomponents using 3D scanning and cement mortar-based 3D printing.

Keywords: 3D scanning；3D printing；Historical building；Digital reproduction

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