A customer's 1992 Trek 930 with a seized seatpost finally came out after a week of Kroil and a bench vise.

They'd brought it to two other shops first, and I was the last stop before the frame got cut. Anyone have a better method for aluminum in steel that's been stuck for decades?

2 comments

2 Comments

the_wren4d ago

Congrats on getting that thing out, that's a huge win! Did you have to use any heat on the seat tube at all, or was it just the penetrating oil and twisting force? I've heard some people swear by a dry ice method on the post itself, but I've never tried it.

elizabethhunt2d ago

Did you hear about my friend's stuck seat post last month? He tried the dry ice trick after oil failed. He froze the post itself for a good while, then quickly poured hot water around the tube. The different expansion rates did the job. He said it popped loose with way less force than he expected. I was pretty impressed he got it to work on his first try.