On my commuting bike, I need to replace the seat-clamp, because I want to use one with attachments point to mount the rear rack on. At the moment I'm using p-clips, but those have a very limited lifetime and one of the current pair has just broken, so the other one probably will very shortly too.
Of course, the seat-post has seized, and after some abuse trying to unseize it, the bit that the seat clamp attaches to is coming out of the post itself, although the post was just starting to move! I think this means that this seat-post is toast, but I have to find some way to remove it that doesn't rely on force being exerted through the seat itself.
Mole-grips around the seat-post currently aren't moving the post at all. Hopefully leaving it overnight, the WD40 I've sprayed around it may loosen thing up a bit, although obviously it's difficult for that to get into the gap. I'm wondering how I can apply some more leverage to the mole-grips.