About a year ago I picked up a 1985 Panasonic Pro-ATB for my son. It's a great bike unfortunately the seatpost is stuck. It won't budge no matter what I try. So the bike has sat in the garage untouched. I was looking at the frame this morning and realized that this would make an excellent touring bike, much better than the Diamondback Ascent I'm currently working on. I decided to make one last all-out effort to remove the seatpost. I'm thinking about trying the caustic soda method (CS for short). Basically you pour CS down the seattube (for me it will be from the bottom bracket while the frame is suspended upside down). The CS dissolves the aluminum seatpost, sparing the steel frame. The problem with this method is that the chemical reaction between the aluminum and CS produces a lot of heat and poison gas (ask any meth cook). This method works but you've got to be really careful. I stripped the frame but discovered that the bottom bracket shell is stuck. It's sitting at the shop right now. I hope to have it back tomorrow. I'll be heading to the hardware store to pick up CS, plastic tubing, and safety gear.
How NOT to do the CS method. The first three minutes are pretty entertaining.