Regarding our discussion sparked by the Carnegie Hero Medal encased in Lucite, Robert Neale has this advice for anyone trying to remove a coin or medal from a Lucite block. -EditorNail polish remover is likely more methyl ethyl ketone than acetone (dimethyl ketone) and less effective on Lucite (polymethylmethacrylate). For the nooks and crannies, how about warming the acetone bath (in good ventilation; boiling point is about 56 degrees C) or even using a jewelers ultrasound bath?
On a related note, Dick Johnson sends this correction. He writes: "Hugo Greco was not the new Carnegie Hero medal's designer -- he was the manufacturer."
Wayne Homren, Editor
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