Seems like a decent fix. Finding someone who has a TIG welder capable of alternating current and having them fill in the crack and grinding the excess down would be the way to go if you couldn't afford to cut any length off the seatpost. Although many types of aluminum need heat treating after welding, which would not be economical.

I'm a Man

But I can change

If I have to

I guess

:)

First post-fix ride to work and back today, no issues.

+1 on the fix.

For my folder's seat post, I made it out of two -one inserted into the other. Press fit.

For the steerer, I machined a bushing to adapt the threadless stem.

https://c1.staticflickr.com/8/7119/2...13cf15d2_c.jpg

It's a well crafted fix and your workmanship is evident but I will echo others...$20 into a new post that would likely be better than the stock one from a 312 seems cheaper than a ripped new one, so to speak. If the tube was compromised at that point I wouldn't trust the rest of it.

I'm certainly not intending to talk anyone that has reservations about such repairs into doing this themselves; this thread is only intended as encouragement for those that are confident in their understanding of materials and fabrication skills, in the event that they are confronted with a similar situation.