i am in the middle of doing this at the moment mate i have used a seat tube of a cheap bike the same size i have a spare mk2 burner tube as well if thats the size of your tube
did a bit of work on my yammy frame yesterday
seat post was stuck 2" from the bottom
tryed heat the axesaw down the frame
resorted to new seat tube
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the old post was able to hammer out with a 1/2" extention bar
see the axesawed all the way through still never came out :evil:
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