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My Parker 45 seems to have a cap that doesn't hold in the section securely. Is there a solution to this problem?

Loose cap is a pretty common issue on Montblanc Noblesse, as for many other pens with a plastic snap inner cap. Plastic inner caps usually have a shorter life than the ones with metal mechanism, as they become loose over years of use by the friction of capping and uncapping. Fixing this issue can be not so easy. A fast search in the web gave back a range of proposed solutions: a single layer of electrical tape around the bottom of the inner cap, as it could pull back the inner cap in shape; a layer of Teflon tape on the clutch ring on the section (with an high risk of inner cap cracking); a little piece of cellophane tape inside the cap (with or without silicon grease to increase the adhesion); a thin layer of superglue or epoxy inside the bottom of the inner cap (a dangerous no-return method, in my opinion) in order to increase the grip coupling; a drop of boiling water into the cap, in order to soften and re-shaping the inner cap. Discarding the #4 because irreversible, and the #5 because too uncertain, I applied all the first three methods, but without success. So I planned to experiment a personal appoach, which brings together some of the theoretical assumptions of the methods #1 to #3. After unscrewing the topper with the MB star, I released the inner cap and clip (figure #1). Then I put a ring of a thermo-shrinkable tube (5 mm in height, 9.7 mm in diameter) around the bottom of the inner cap (figure #2). Using a lighter, I quickly heated the inner cap together with the thermo-shrinkable ring. The heat softened the inner cap plastic and at the same time shrank the ring (figure #3), reshaping the inner cap. Then I gently removed the shrunk ring (figure #4) and finally put the reshaped inner cap into the cap, screwing on the MB star cap top. The cap clicks nicely and firmly, now. Sincerely, I cannot predict how long the reshaping will last, but surely I will report the long term outcome of this matter.

I dropped by Yard-o-Led Viceroy Grand and ever since the cap doesn't close as well or as securely as it did, however, I can't find any physical difference in the pen. There are not bumps or dents that I've seen. When I first got it the cap closed with a very satisfying click and was surprisingly secure. Since the fall it stay put fine enough but certainly not as well as before. What should I do? Would Yard-o-led be able to help? Would they charge for a repair? I'm bewildered by what went wrong!

Hey! I was tinkering today with a couple of 15's to figure out what the issue is with the loose cap they seem to be known for. As I was screwing the thing, I noticed that if I didn't screw the section all the way into the barrel the cap would snap nicely. This is a pen for which I tried the hot water trick (filling the cap 2 or 3 times with boiling water and leaving for 30 seconds to nudge the inner cap's plastic back into shape). While that helped quite a bit, it was still too loose to trust that if I clip the pen it won't fall off. So I took a piece of 22 ga silver wire (22 Gauge, 1/10 sterling silver filled wire purchased from Amazon, to be exact) and made me a spacer ring. The cap snaps nicely in place and it looks well enough not to be a noticeable hack. Have fun... alex

Hi all, I have a Jinhao X450 that was dropped (by me) a while back. Now the cap is so loose it's not really usable. I'm holding it on the pen with electrical tape, but that's not always going to be practical (nor is it the most aesthetically pleasing thing ever). Is there a way to get the cap back to its usual tight-fitting self? It doesn't need to be quite as tough to get on and off as it was, but I would like it to stay on reliably. Thanks, Miche