Plastics used to restore porcelain artifacts can become yellowish or differ in color from the ceramic base material over time. Researchers in Germany explored the potential of using ceramic additive manufacturing technologies and subtractive post-processing steps to restore porcelain artifacts instead.
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Optical images of a red-figure pottery fragment from Athens circa 700-500 BC. The black gloss results from a clay slip reaction to alternating oxidizing and reducing atmospheres during firing.…
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