On my second filling, it does not fill well. The ink stays just a bit above the metal ring on the storage. it is a piston filler ( i am new to this i hope i am describing it well) so it must not be air tight! -- well, i looked around and it is a con-70... So it must be easy to re-attach if it is not pulling the ink in! ----- > I tried to pump several times but it does not fill the tube, just at the level i just said!
I posted a similar thread with this concern when I tried to use a CON70 in a Custom 74. Goulet Pen Company has a video on YouTube, I think titled "how to fill a CON70 converter" or something like that. There's a trick to the CON70.
First, that black stopper inside must be in as far down as possible; when it makes contact with that glass loop, it creates a vacuum which draws up the ink.
Second, the most important part: there's no other way to put it: you must be rough with it, or it will fill very insufficiently. Press the button very quickly and very hard, as if you're trying to hammer a nail using your finger. Do that, be very rough with it, and it will fill all the way up.
The key is to push VERY hard and very fast, unfortunately.
Be very careful not to tip the bottle over.
Try it with a cup of water to the brim first so you can see what I'm talking about and to see how hard you'll have to push.
Otherwise, soft pushes will not fill at all.
Edited by Kuhataparunks, 10 December 2014 - 01:20.