Removing stuck or seized seatpost?

I removed a siezed seatpost a couple of months ago in about 30mins from start to finish.

1. loosen seat post clamp/bolt
   
2. drill hole right through both walls near base of seatpost large enough to fit a long 3/8 drive socket extension through
   
3. lie the bike on its side and stand on various parts to steady it
   
4. with large ball pein hammer hit the socket extention, thereby rotating the seatpost within the seat tube. About 10 very hard hits should see it move.
   
5. flip bike over and repeat, turning the post in the opposite direction.
   
   

The seat post is ruined but that's pretty much a given no matter what method you use.

Note: a screwdriver through the hole will not work as you have to hit it so hard you will bend the screwdriver. Socket extention is thick enough and made from Chrome vanadium steel so will transfer the brute force and ignorance.

no vices, no harmful chemicals, no waiting.

this method could damage your frame though.