I'm also plagued by a waking seatpost nightmare. Tried quite a few methods which ended up mangling the top end of the post. I've tried the cutting down technique but without a real amount of patience so have ended up pulling bits out rather than full length leaving the post entirely inside the tube. Saying this though I'm doubtful I would have been able to get enough leverage as it's so far down. The real problem seems to be that it's carbon wrapped which seems to have acted like a glue. My current thinking is to go down the caustic soda route, hoping that once the post is gone I will be able to scrape the carbon wrap off the inside of the seat tube fairly easily.. but if anyone has experience with other techniques (which are significantly fewer now that the post is shallower than the seat tube) then I'm all ears!
I'm also plagued by a waking seatpost nightmare. Tried quite a few methods which ended up mangling the top end of the post. I've tried the cutting down technique but without a real amount of patience so have ended up pulling bits out rather than full length leaving the post entirely inside the tube. Saying this though I'm doubtful I would have been able to get enough leverage as it's so far down. The real problem seems to be that it's carbon wrapped which seems to have acted like a glue. My current thinking is to go down the caustic soda route, hoping that once the post is gone I will be able to scrape the carbon wrap off the inside of the seat tube fairly easily.. but if anyone has experience with other techniques (which are significantly fewer now that the post is shallower than the seat tube) then I'm all ears!
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