I got two frames steel frames with stuck alu posts in it, so we're in the same boat. The vice didn't work for me either. There's the caustic soda trick as well, but I'm not sure, I'm brave enough :-)
Have you tried the Peacock Groove-trick for stuck seatposts?
You drill a hole in the BB-shell and use a long metal rod to hammer the post from the underside?
I got two frames steel frames with stuck alu posts in it, so we're in the same boat. The vice didn't work for me either. There's the caustic soda trick as well, but I'm not sure, I'm brave enough :-)
What's a reciprocating saw called in Danish?