Edison diamond disk5/2/2023 ![]() ![]() As part of this study, we digitized the discs using the traditional stylus-playback method. Led by a metals conservator, the study involved opening two Diamond Disc-type sealed Master Mold objects as a test. This concern prompted a conservation study in 2011 on how to best preserve the discs once they have been unsealed. Once the seal is opened, deterioration due to exposure of bare metal groove surfaces to oxygen in the open air becomes a concern. It was created by electrotyping the surface of the Master Mold.īy design, access to the two groove surfaces requires that the copper seal be cut open.
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