|Left hand thread? Right hand? Glued in?|
This wouldn't be a problem but for the fact that being, well, a 1930's Japanese eyedropper, the thread diameter and pitch are understandably proprietary. There are no off-the-shelf vac tools for this chap. I've been trialling metal epoxy putty as a disposable, single use C ring tool on various odds & sods, and will carry on till I feel ready to give it a go on the actual pen.
Subtitles have been provided for non-Weegies. More on this as and when it happens! If it all works out, I will blog all the details, some photographs, &c.
All the best,