Body Material: Clear plastic
Length (capped): 5.6"
Length (uncapped nib-end): 5.1"
Length (posted): 7.1"
Barrel Diameter: 0.5"
Section Diameter: 0.38"
Nib type: JoWo
Nib material: Steel
Weight (inked): 31g/1.0oz
Barrel design: Round, faceted
Fill type: Piston-filler/bottled ink
Where to buy: Anderson Pens
The TWSBI Diamond 580 is very similar to the Diamond 540 - I selected the clear plastic demonstrator body. There are a few obvious chrome pieces on this pen - the slim ring at the top of the piston knob, the band at the end of the cap, where TWSBI and Diamond 580 is matte screened on, as well as the ring around the top of the cap. There is also a metal ring in the nib section. The clip is also chrome and is faceted, as is the body of the pen. The top of the cap has the TWSBI logo. All the parts of the pen are visible through the pen, since it is a demonstrator!
This nib is a JoWo steel nib, stamped with TWSBI's logo and identified as a 1.5 below the logo. It is broad and attractive, and tastefully complements the appearance of the clear demonstrator. The nib may appear a tad small for the size of the pen, especially if posted.
Pilot Iroshizuku Ku-Jaku ink.
|Relatively quick drying time - in this sample, I had been writing for awhile and the nib was a little dry. You can tell because the ink looks a little light. However, you can tell from the wetness sample that it still writes well.|
Since the nib is so smooth and ink flow is so consistent, very little pressure is required to write with this pen. As such, writing is a pleasure with this pen. My hand did not tire after writing extensively. The pen itself feels strong and sturdy, and it doesn't feel like it's going to break. Have I dropped it on the floor to test this? No. Will I? Well... no. The 540 did have cracking issues (which TWSBI will take care of if you contact them). But the body of the pen itself feels really good to hold. Neither of my 540s have cracked, and my 580 is a hand pleaser. That sounds weird, I know.
- Nib units are replaceable and interchangeable.
- Lovely, juicy, springy stub nib.
- Piston-filler has great ink capacity.
- TWSBI provides wrench and silicone grease so you can service your pen yourself and learn more about fountain pens while you're at it.
- Body is faceted and does not roll away when not posted.
- If you like postable pens, this pen does not post comfortably.
- Nib runs a little dry after a few minutes of constant writing. Feed needs to be primed with ink.
I highly recommend the TWSBI Diamond 580 fountain pen. The 1.5mm JoWo stub nib is just amazingly juicy, wet, and smooth. I am so delighted with the writing experience with this pen. This nib will offer gorgeous line variation and highlight lovely characteristics of many fountain pen inks. The pen is easy to maintain and has great ink capacity. TWSBI also backs all its pens with wonderful customer service. The only downside I can foresee for some folks is if you like to write with a posted pen, this isn't really possible. Even with the nib running a little dry after a few minutes of writing, I would still highly recommend this pen!