Ju

This could be good idea, if they have a drill bit that diameter, and than seat tube might get bigger in diameter. Possibly use a metal saw blade and cut two diagonal slits in the seat post (split it two halves length wise), but that will take a day, and a pack of Red Bull.

I've removed 2 stuck seatpost in a similiar manner and the hardest of the two took ,only took me 45 minutes. I just used the saw blade by itself and cut two slits in the seat post and then used some channel locks to squeeze the post "inward" and that was it. No special tools required just a cheap old saw blade.

Maybe try cutting off the post and leave about 3/8" or a bit less sticking out of the seat tube and get the biggest easy out that will fit then tap it in the post and twist counter clockwise. It might work too

Sawzall will do it in no time, only problem is blade is too short.

I had a stuck seatpost on a 81 Fuji Roayale, that had been sitting outside for several months. It was a chromed steel post, I heated it a little with my propane torch, then cooled it down quickly with wet rags. It twisted out successfully! Probably not recommended for alloy posts.

geek

I had a couple cases where cutting the post and hacksawing a couple of slits did not work. The posts were literally fused to the seat tubes. I ended up using a reamer. It 's a tedious job that I wouldn't repeat unless it was a very good frame and/or I was being handsomely compensated.

If the post is alloy and not too thick walled, to cut it 2 cm or so over the frame and using a reamer is the way to go IMO.

I tried that once. Got a big EZout (it was $20 for one that size) and gave it a try. The thing did grip it, but as it was forcing itself in it started opening up the bolt-ears more than I was comfortable with, and so gave up. That post is still in that frame, alas.

jim