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  • Thanks all! It seems I have three options: heat, cold or chemicals.

    With cold you then need concussion to break the bond: it seems to me that there is a risk the extensions will become brittle and break.

    Heat would involve the purchase of a hot air gun (and a long extension lead).

    Acetone seems like my best bet at the moment as a) I have some and b) I can rig up some kind of stand and leave it on the fire escape.

  • Acetone won't work. MEK (Methyl Ethyl Ketone) might, provided you keep it warm and leave the parts submerged for a long, long time. It's really, really pongy stuff though. Worse than acetone, by many orders of magnitude.

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