Technical & Reference Section > Tech and Restoration

Stuck in seatpost

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jT Racing:
nice first post. your gonna be popular

CoolHands:
just thinking about this. How would you apply the caustic soda to dissolve the seat post? Presumably it'd be tricky to find a container big enough to suberge the whole frame.

Or could you block up the seatube (if it has a hole in the bottom) and try & fill it up with solution?

harris:
yep plug up the holes and fill the seat tube,its been done before.
you can get a container and just put the seat post part in tricky but it does disolve where it reaches.

trasher:
how about the old toy arrow with the sucker on the end
push it down past the bottom of the  seat tube ,,,then pull it up slightly to form a seal
then pour in desired amount of caustic ,,,well you get the idea ,,,,

or should i get my coat  ::)

stfc:
depends on whether you are going to repaint the frame here but,  if you get a gas lamp/oxi and run it along the seat post tube on the frame  and then twist the post with a good pair of mole grips or similar it will come out, repeat obviously until it frees, alloy contracts and expands at a different rate to steel etc so that will do the trick, but will fook your paint, failing that soak it in diesel... failing that chuck it in a skip...

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