Removing the stuck seatpost.

I read a few suggestions on how to do this and it seemed easy enough. This is what I did:

Cut the seatpost off so that about 1/2" is left sticking out, then insert a hacksaw blade into the seatpost and carefully cut a slit in the post. This is very laborious, and you run the risk of damaging the frame if you cut too far, but this approach cannot fail. Once you have cut the slit, grab one edge of the cut with locking pliers and roll the seatpost up inside itself and pull it out.

There is a valuable lesson here - grease your seatpost. It took three evenings of trying but eventually it came out.

I had to do more than one cut as the post was so thick, eventually I weakened it enough to get it out. Total scrap but at least the frame survived.

Here's the frame with the stickers off and the seatpost out:

Next job was to get the cranks off, this turned out to be a lot harder than it should have been. The rust monster had been at it again and the crank arms were seized onto the spindle. No amount of force would move them. So out came the trusty hacksaw.