Suitability of selected 3D printing materials for conservation purposes using FDM technology

Abstract

This master's thesis explores the suitability of selected polymer-based 3D printing materials for conservation purposes, with a focus on plaster-based sculptural works. Using FDM (Fused Deposition Modelling) technology, the study evaluates four materials: PLA, PETG, ABS, and PMMA. These materials were preselected for their stability, accessibility, and common usage in additive manufacturing. Analytical methods including the cross-infection test, FTIR spectroscopy, and colourimetry are employed to assess the materials' chemical and physical compatibility with plaster. The experimental framework also incorporates accelerated ageing tests and a novel sandwich test method to evaluate long-term stability and interactions. The findings aim to provide conservators with a scientifically validated guide to integrating 3D-printed materials into restoration practices, ensuring minimal risk to cultural heritage objects.