The Record Pi can safely flatten a large variety of warps and records. Experiment with precise temperature and time, and you will be amazed with the results.
Have a Jolly Flat Christmas
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Flattening a warped garage sale find of the Salsoul Orchestra from 1976 (115g weight)
Fixing an Old Andy Williams LP (135g)
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Flattening a warped 135g album left in the car on a hot summer day.