Pleasure to write and draw with. Ink flows like butter. With the broad nib I could achieve 4 different line weights. Great for my architectural and design sketches . Convenient built in piston that is easy to recharge and mess free. Nice built, and economic . I don’t have to worry about leaving behind a very expensive pen after my meetings.
I prefer fine or extra fine nibs, but decided to try something new with this stub nib TWSBI Eco. I’m loving it! The Eco is a great price and so easy to use. I love that it holds so much ink, reducing refills. This is my second Eco and I’m struggling to decide if I like them better than my favorite Lamy Safari pens. Thank you for encouraging me to try this nib.
Seriously, save yourself a huge headache and just don't start down this path. The Eco pens are cheaply made and poorly finished. The first one I ordered actually looked great and wrote smoothly. It seemed to be a very nice pen, except for the ugly little hairline crack in the barrel that let ink slowly leak all over my hand. Apparently, this is a well known and long-term problem of TWSBI pens that has yet to be addressed. Naively, I gave them another chance and bought a second pen, but this one felt like the nib had been finished by dragging it down a gravel road. It scratched every piece of paper I tried it on. Honestly, there are just so many better quality options at this price point, Pilot, Lamy, Sailor, and others, that I can't think of a single good reason to try TWSBI a third time.
The TWSBI ECO has become my new favorite pen. Everything about the pen just fits me perfectly. From the grip size, to the weight, to the smooth writing, it all just feels right. I'm fairly new to fountain pens, so I wasn't entirely sure I was "ready" for the piston filler. Turns out it is easy to use, holds lots of ink, and thanks to the demonstrator, it's easy to tell when to refill the pen. Sure beats unscrewing the body to check the cartridge or converter.
The Eco is, for me, a good purchase. The EF nib is smooth and the balance of the pen in my hand is comfortable. When posted I can definitely notice a shift in the weight, but that is not negative--it's not heavily back-weighted but it is noticeable. Although it is a longer pen than I look for (I have a Diamond Mini with an EF nib and that's what I'd call perfect for me), the Eco will be used often. One thing that has affected it's performance is the ink. I loaded it with TWSBI Midnight blue and it's a very wet ink, making the line appear more like a medium. A different ink gives an expected fine line. That's not a complaint about the pen!