I purchased a Twsbi eco online, and it simply gushes ink very randomly. When I say gush, what I mean is the just spurts out a ton of ink all at once. I have used the ink in many other pens, and I don't think it is the ink. I am trying to work my way through a bottle of D'atriments scented ink. So I don't think it is the ink, I am 2/3 rds the way through a bottle.
Any thoughts on what I can do about this pen?
Yes, I share your experience in my Eco Broad. The ink bypasses the nib and burps through the underside of the feed enthusiastically onto the paper. I realised this burping responds to writing pressure and angle. In other words, I could have gotten a feed that does not snugly fit into the section or nib collar.
And when ink does not gush out, it flows inconsistently, and this problem is magnified by some inks and a broad nib. No, it is not my writing angle.
No such problem with my other pens at all (pelikan, pilot, platinum, sailor)
In other words, Eco is either not a well-designed pen or a lack of quality control or a combination of these.
For reference, Diamine Chocolate Brown burped often in my Eco Broad; Diamine China Blue reduced burps.
To be argumentative, Pelikan also uses a piston filling system - but never burped ink, at least mine don't. So, i do not buy that heat and pressure theory. It boils down to the poor design and engineering or lack thereof in the Twsbi Eco.
The WingSung 698 and 3008, Lanbitou 3059, all piston, very cheap, never burped ink or leaked.
I enthusiastically urge Twsbi designers to take a look at those - and probably learn a thing or two.
Edited by minddance, 11 October 2017 - 07:45.