DISCLAIMER UPDATE (6/24/22): TWSBI and Narwhal have released a joint statement which I cover in my most recent TWSBIgate post. While not completely satisfied with TWSBI’s response to the situation, I no longer feel the need to dissuade people from purchasing their products.
DISCLAIMER (5/1/22): Since writing this post, TWSBI has been involved in some unsavory actions, and I am currently boycotting them. For more information, refer to the #twsbigate tag page.
In late February, I saw a post on Goulet Nation where someone was showing off a new nib. But this wasn’t any old nib, it was the Flexible Nib Factory ZT5E. Or, in English, a custom feed and housing to allow the use of a Zebra G dip nib in a TWSBI 580 series pen. Since Zebra G nibs are what first sparked my love of flex nibs, I immediately purchased a ZT5E.
Before I dive into the actual review, I want to make it clear that as far as manufacturing and production, I think the ZT5E is top-notch. My critique should be read with the awareness that this is a dip nib housed in a fountain pen. Flexible Nib Factory has provided a way to fit a square peg in a round hole, basically.