Originally Posted by
Procione
Possibly use a metal saw blade and cut two diagonal slits in the seat post (split it two halves length wise), but that will take a day, and a pack of Red Bull.

I've removed 2 stuck seatpost in a similiar manner and the hardest of the two took ,only took me 45 minutes. I just used the saw blade by itself and cut two slits in the seat post and then used some channel locks to squeeze the post "inward" and that was it. No special tools required just a cheap old saw blade.
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Ese dicho que me han dicho que tú has dicho que yo he dicho, ese dicho no lo he dicho, porque si lo hubiera dicho, ese dicho estaría bien dicho por haberlo dicho yo.