As I was writing today I observed the ink was running lean. Using a loupe I looked at the nib between the tines and before my eyes an air gap between the tines appeared, the ink 'separated'. If you look at the image there is some ink at the tip of the nib, an air gap, then ink near the breather hole (too dark to see).
Would anyone know what the cause of this would be ? I've thought of possible reasons such as: feed running dry, nib and feed not mating, problem with nib causing capillary failure. Observing: there is still some moisture/ink between nib and feed, the nib and feed are properly touching (no gap); I'm open to other suggestions.
The nib is a generic JoWo #6, feed is common generic plastic, pen is cartridge/converter.
Edited by fabian3194, 27 August 2017 - 00:24.