I’ve had my pair of Hongdian M2’s for a couple of weeks now, and last night ran into a bit of an issue…
Originally, I bought two: the brass version with an extra fine nib, and the blue aluminum version with a fine nib. I found that I didn’t like the extra fine nib, so I ordered a set of replacement nibs (that has a fine nib) for the brass version.
Last night, I went to re-set up both pens: change the nib in the brass version, and swap the ink in the blue pen. While I was doing this, I noticed on both pens that the converter has an issue. Whenever the piston is fully extended it pushes against the feed tube, which pushes the body of the converter away, and reduces the seal between the two pieces. This makes getting a complete fill of the converter nearly impossible, as air gets into the converter.
Has anyone encountered this issue? Have you done anything to fix this issue? Is there a converter that will fit better in the M2?


I fill almost every pen I own with a syringe because I hate the mess that dipping pens or converters can cause. So that’s my main recommendation. Second method is a bit like filling a syringe. Dip nib, draw up ink with converter. Hold pen nib upwards and tap the pen to get the air to the top of the converter. Slowly screw the converter to push the air at the top out. Dip pen again again suck more ink in. Rinse and repeat till you have a satisfactory amount of fill. Honestly though, syringing ink into the converter is just easier. You can give the converter a little turn (once its back in the pen) to force ink into the feed faster if you can’t be arsed waiting for it to make its way down the feed. 😊
With most of the converter pens, I can get a good fill by running the ink up and down the converter a few times to get most of the air out. (I could, pop the converter off, syringe in a bit more ink - but meh.) It’s just annoying to not be able to get rid of a large air bubble all because the seal is bad.