Originally Posted by
JackJohn
I think I see your point here, certainly you need some experience to get that kind of feeling and precision and to be able to detect anomalies in threads.
I had taste of this today on another campy bb, Italian thread. The lockring engaged in the adjustable cup and just using hands it was stuck as soon as all threads were in. I tried to inspect it having in mind what has been said here, but couldn’t find anything. Another identical lockring from another bb worked just fine, so the problem was not the cup. As I went on with a wrench and did a few back and forth, eventually I was able to tighten by hand up to halfway. However, when I tried the lockring on another adjustable cup, it engaged but stopped after the first thread. This is the kind of situations where I’m still not sure of what happens and what would be acceptable, and where experience matters.
All this to say that yes, you have to practice through different situations to learn. But also that this forum is an exceptional source of knowledge thanks to all of you !!!
Yep, when ever I have a hangup, I clean it spotless, get out the strong reading glasses and a right angle pick. Starting from the inside I scribe the pick through the threads mm by mm in the unscrewing direction, sometimes the anomaly is so small you barely notice it with the pick but it works better after you scribe it. You can push some pretty bad gacks into a better state doing this, then the anti-seize and chaser can really refine it from there.
Never had one I didn't save, often it goes worse for the frustration and challenge of it.
It is a tedious process but can save the day when it goes well.
Biggest thing is to lean into it so you really get a feel for it.
