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Hi Stewart, Depending on the severity of the crease, we use two techniques: 1. Mild crease (and flat discs) - we use a self-designed suction platen. This method is completely non-invasive, and has the added benefit of eliminating resonances of the thin substrate during playback. It also makes the disc surface perfectly flat, which can improve playback on shallow and closely spaced grooves (not uncommon with dictation discs). 2. Severe crease - we use an Airtight Disc Flatter, a tool used to flatten warped LPs. It uses 2 sheets of glass with precision semiconductor heaters attached to the glass for uniform heating. It operates at very low temperatures (warm to the touch) with a timer to control the process. Išve used this on hundreds of Audographs, Voicewriters, and other dictation formats with excellent results. ~ Eric _________________________ Eric Jacobs Principal The Audio Archive, Inc. 1325 Howard Ave, #906 Burlingame, CA 94010 tel: 408-221-2128 [log in to unmask] Disc and Tape Audio Transfer Services and Preservation Consulting Please consider the environment before printing this email. On 5/17/14, 7:40 AM, "Stewart Adam" <[log in to unmask]> wrote: >Hello > >Are there any suggestions on how to remove creases from an Audograph >disc? I was thinking of >placing them between 2 sheets of 12 inch glass and baking them similar to >a tape. Any suggestions >would be appreciated. > >Thank you > >Stewart Adam >Creative Audio Works >