I'm trying to salvage a Trek 613 frame, with one heck of a stuck aluminum (fluted) seatpost.
I've tried bench vise (well the best I can given that the vise wants to rotate under very high torque no matter how hard i tighten the vise).
I've tried ammonia for 30 hours.
I've tried PB Blaster.
I've heated it up the post with propane twice, my most recent effort I then stuck the hot post in the snow (its -16 Fahrenheit today) and then I immediately tried bench vise.
Seems my next options are either cutting it out with a hacksaw blade (maybe finagled to a broom stick dowel) or to dissolve it out with lye. Which option would you chose?