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Many of these answers are valid, but before you go through the trouble of heating your frame, using nasty chemicals, or anything else, there is a far simpler method that often does the trick. Get a dumpy saddle you don't mind bending and install it in the seat post. Clamp the saddle in a bench top vice. Using the entire bike frame as a lever, turn the ...


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Noone's mentioned heat to enlarge the steel frame. First, check with a magnet to make sure the frame is steel. If its an aluminium frame, then stop now. Remove the bottom bracket and bearings first. And remove the seat. Also remove brake cables from the area of the seat clamp. Drill a good sized hole through the top of the seat pole, and fit a lever ...


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Leaving out the back story - which is emotional - here is how I got an alloy seatpost out of a Columbus SLX (steel) frame. I got a bunch of optimistic advice and it all failed me. I tried: Penetrating oil such as WD-40, Hard core penetrators like PBlaster and Kroil, Freeze spray, Hammers, and giant levers. I was down to the last resort - sodium ...



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