I have a nice dark red Pilot Decimo with a fine nib fitted. The intention from the beginning was to use it as a mark-up pen using a red ink of some kind. However, all the red-leaning inks I've tried (from Diamine Ancient Copper to Oster Fire Engine Red) have resulted in significant nib creep, and also noticeable drying out of the nib if it isn't used every day.
Is it a general truth that inks with red base are more likely to exhibit nib creep?
So, for the moment I have flushed the pen and inked it up with Oster Emerald, which is flowing beautifully and giving no problems.
To note: I've currently got a Wing Sung 698 filled with the Oster Fire Engine Red, and there are no problems with either flow or creep. Which makes me wonder if there is some property of the Pilot nib that is responsible (this was an afterthought as I wrote this post).
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