First port of call would be to bounce on saddle whilst sitting on it, second twisting with big spanner. If its aluminium caustic soda could be next, may be even gentle heating although that damages paint.
@wildwest started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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First port of call would be to bounce on saddle whilst sitting on it, second twisting with big spanner.
If its aluminium caustic soda could be next, may be even gentle heating although that damages paint.