Just to re-invigorate this thread in the hope that someone can answer the original question:
Before I try caustic soda, has anyone tried this?: http://bikesfornoreason.blogspot.co.uk/2015/01/the-seatpost-from-hell-how-to-remove.html
@dannyadams started
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Just to re-invigorate this thread in the hope that someone can answer the original question:
Before I try caustic soda, has anyone tried this?: http://bikesfornoreason.blogspot.co.uk/2015/01/the-seatpost-from-hell-how-to-remove.html