Hi Scots Charles River
Have you tried the string dipped in flammable liquid trick, first wrap the string in a neat line round the bottle, light the string and then slowly rotate the bottle so the flame graduly heats up the glass then touch the hotspot with a cold wet cloth, its very similar to the old method of opening a Port bottle without disturbing the sediment, first you used a very hot circular set of tongs round the neck. then brush the hotspot of the bottle neck with a wet feather.
Have you tried the string dipped in flammable liquid trick, first wrap the string in a neat line round the bottle, light the string and then slowly rotate the bottle so the flame graduly heats up the glass then touch the hotspot with a cold wet cloth, its very similar to the old method of opening a Port bottle without disturbing the sediment, first you used a very hot circular set of tongs round the neck. then brush the hotspot of the bottle neck with a wet feather.
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