I bought some "as is" pens cheap from ebay, one the Sheaffer Frank and I were talking about in another post. As luck would have it, the descriptions were vague, the pics were blurry, and no one was dying to get the pens.
I have 2 with stuck sections. I'm fairly certain someone used glue or something on them. I was reading Dubiel's book on this and he recommends soaking the pens a little above where the section and barrel meet in water. I'm doing that now and I'll leave the pens alone for a day or so.
But I think my technique with pliers is wrong. I slip rubber over the pen section and turn, but I see it slip. In other words, the rubber isn't giving me enough traction to twist. Do I tighten my grip on the pliers? I'm asking because, while I have relatively weak hands, I'm still worried I might break something.
I figured it out. I was using pliers, the teeth of which, I had ground off. I have a spare set of pliers, unused. I used those with the teeth, plus warm water soaking of the pens, and then a drier. The Sheaffer is fine. I'm giving the other one more time. :)
The other pen has a slightly tapered roundish section. It's more conical than The usually section that has tapers then widens out towards the end where the feed and nib are. So this one is taking a long time. Someone told me it took him 2 weeks of soaking to get one section to pop off so I'm still not giving up.
I just can't understand what people do with these pens though. There's so much repair material to read online, with so many warnings and how-tos. It's not hard to follow instructions. Now from the very, very few pens I've had to play with and learn from, I've already encountered two glued-in sections, one too long sac, two ill-fitted feeds, several wrong re-insertions of feed & nib.
Some of those repairs may have been made before those resources existed. And even now, I think the majority of people can't be bothered to do the research.
I started this thread three weeks ago, so maybe I now hold the record for being unable to remove a stuck section.
But I eventually did it. I pulled out the nib and feed, and soaked the section up to where it meets the barrel. The water didn't work. The next I did was use ammonia solution and every day, there was some new dissolved gunk in the solution. I finally attempted to heat the section (3 days after the first ammonia soak) and pull it off today. And it worked.
I can't tell what was keeping the section stuck because if there had been shellac there, there are no traces of it now. But the sac inside had become a semi-congealed mess so that might have been it.
There's all kinds of reasons for stuck sections. Sometimes it's a glued repair, but often it's plastic shrinkage. Eversharps often suffer from that, as do lizard and snakeskin Swans. In the 1940s Waterman made a habit of gluing in sections with some mighty glue of their own devising, which can be a trial to loosen.
I find that patience, persistence and dry heat (repeated as necessary) works every time. I stopped soaking because it wasn't particularly successful, and many of the pens I work on have black hard rubber sections. I don't need the extra work of restoring a faded section.
I couldn't find any trace of adhesive but after cleaning the inside of the barrel, I'm pretty sure it was a considerable amount of dried ink mixed up with congealed sac bits. Also, when I examined the section, the part where the barrel and section meet was filled with very evenly spaced, thin diagonal grooves along the whole diameter. The old ink must have dried up and hardened in between the grooves.