PSA: Stop using a torch for seized seatposts, try liquid nitrogen instead
I used to spend 2 hours with a torch and penetrating oil trying to get a stuck aluminum seatpost out of a steel frame. Burns, smoke, and it still wouldnt budge half the time. Last month I tried a cheap liquid nitrogen kit from Amazon, about $45. You just spray it around the seatpost collar, wait 30 seconds, and tap it with a mallet. Came out on the first try without damaging the frame. Has anyone else found a weird method that works better than the standard approach?