Help with adding thread resistance please

[jgourlay]

I have this problem with fountain pens that is starting to cost me real money. I've ruined my third shirt because my fountain pen comes unscrewed in my pocket, I don't feel it, and of course the nib has to sit right on the cloth.

Statesmen, emperor, all the kits do the same. The thread action of the cap feels great...but I just can't have this happen again. What do you all suggest for adding some 'firmness' to the cap threads so these do accidently uncap?

 

[Dustygoose]

I have had one do that to me. I used a Qtip and put some clear silicone in the threads of the cap. Just a small thin coat on one side.

 

[watch_art]

A single layer of scotch tape inside the cap. It's a cheap trick some pen restorers use to fix bad threads on old vintage pens with worn threads.

 

[rherrell]

http://www.penturners.org/forum/f14/how-keep-our-capped-pens-closed-44111/

This might help, post #28 and #43 have pictures of what he did.

 

[wildbill23c]

One thing you can try is to take your pen to the hardware store and find an o-ring that will fit over the threads, then screw the pen back together, this will help keep a bit of pressure on the pen cap so it doesn't easily unscrew itself.