I had some clogging issues with an Esterbrook J with a 9550 nib. Some people in another thread of this forum suggested it may be the fault of a previous ink I used in the pen (ESSRI, which has a high iron gall content, was used in this pen.) I decided to clean the pen, so tried to screw off the Esterbrook nib. It was stuck, so I tried a bit harder... then the nib and feed came out from the pen separately, without the threaded collar which is still stuck in the pen.
The underside of the nib looks shocking...
- Can the nib assembly (the nib + feed + collar) be put back together?
- How do I clean off the iron gall remains from the nib?