How to remove alu seat post from carbon frame? My aluminium seat post is seized into my carbon frame. To make matters worse the seat post is snapped at the seat post collar - nasty crash. 

Anyone have a way to get it out? Or is it time for the dump?
What you need is some way to grip or gain purchase on the post so you can apply a force to, then apply the usual methods to free the post from the frame.

Possible means of gripping the post I can think of:


Old quill stem inserted into stem and tightened
Star fangled nut inserted into seatpost, with a long bolt threaded into it.


GCN has a video showing how to use hot water to free up the post. It seems that a substantial amount of force is still needed to pull the post out though.