Stuck seatpost in a bonded alloy frame

[Jonny69]

Thanks Jonny69 for your helpful reply, I've recently acquired the frame and didn't notice when purchasing a small crack under the seatpost binder bracket (it's the earlier version before they introduced the rear grub screw) would this make the frame a write off as I guess an alloy weld would compromise the bonding?

That’s an annoyance. Yeah you won’t be able to weld that. Might not be a total loss, you can get quill seatposts. It’s just a question of whether you can find a 25mm one.