• Thanks all for the suggestions on cuttin-n-shuttin:)
    It’s something I’ve done once on a far, far less valuable and thicker gauge frame. And my arms did feel like they were going to fall off lol
    The wall on this is super-thin. I don’t trust myself to do it.
    Will have a ponder.

  • Judging by your photos there's a lot of that seat pin in the frame (there's not much of a length above the frame). So you would need to make a long cut (or cuts) in the pin, which would be tedious even though perfectly feasable.

    Possibly something which is more aggressive with the ali might help. However I'm convinced vinegar will work given enough time.

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