The TWSBI Classic is an opaque-resin piston-fill fountain pen that was released in January of 2014. Known for the 580, Mini, and Vac700R pens, TWSBI has generated a lot of questions around this new model. I made this video for you to give you the run-down of what this pen is all about and what distinguishes it in the TWSBI line. I also have lots of additional videos and info below, so keep scrolling!

Notable features include a piston-filling mechanism with an ink capacity around 1.2ml. It’s available in a #4 size stainless steel nib available in extra-fine, fine, medium, broad, and 1.1mm stub. It’s thinner than the Mini and 580, and weighs about half-way between the two pens (24g). It’s a pretty good value at $50, especially considering non-TWSBI pens of the same build typically cost over $100. It’s available in black, red, and blue.

Two downsides to the pen are that the cap doesn’t post (UPDATE: Now it posts!), and there are no separate nib units available for the model at this time. The nibs are really┬ástuck in the pen, too, so even though I initially thought they were swappable with the Mini, I wouldn’t recommend trying as you’ll likely damage your feed or nib trying to remove it.

TWSBI Classic Nib

Filling the TWSBI Classic

Filling a TWSBI Classic fountain pen is basically the same procedure for the TWSBI Mini and TWSBI 580, as well as just about every other piston-filling fountain pen. It’s a good one to watch just in case you were curious how to fill a piston pen.

Some highlights in this filling video:

  • Explaining how the pen works (0:23)
  • Filling the pen (1:49)
  • Getting the most ink in there (2:29)

Writing with the TWSBI Classic

The TWSBI Classic fountain pen is offered in an extra-fine, fine, medium, and broad as well as a 1.1mm stub. The TWSBI nibs are a western style and write similar to some other brands you may know like Lamy, Pelikan, and Monteverde. If you want to compare individual writing samples of the TWSBI Classic to other pens, be sure to check out the Nib Nook, a tool I’ve put together where I personally have written with all the pen/nib combos I carry in my store.

This next video features how to quickly ink up the piston-filling pen and what you can expect from each of the nibs.

Some video highlights are:

  • Comparison to TWSBI 580 and Mini (0:24)
  • Writing samples (0:58)
  • Filling and writing with the Classic (2:10)
  • Writing comparison between TWSBI Classic EF and Lamy Al-Star EF (4:09)

The Classic appears to have nibs identical to the TWSBI Mini, so you can expect their performance to be identical. Unfortunately nibs won’t swap between those two models, though, and the Classic doesn’t offer any separate nib units apart from their pens as of this post. Despite that, I still really like the Classic. The JoWo nibs are smooth, flow well, and feel better to me than my Lamy EF nib does.

TWSBI Classic Fountain Pen writing samples


Disassembly and Reassembly of the TWSBI Classic

One of the great things about TWSBI pens is that they’re so easy to disassemble and maintain. To add to the TWSBI Classic video archive, I wanted to show you how to take it apart and put it back together.

In this video, I cover:

  • Disassembly overview (0:51)
  • Removing cap insert (1:39)
  • Disassembling the cap (2:55)
  • Removing the nib/grip (4:37)
  • Disassembling the body (8:10)
  • Toothpick trick (9:07)
  • Explanation of piston (11:16)
  • Re-assemble piston (12:38)
  • Threading the piston mechanism (16:45)
  • Final steps (18:12)

This is exactly the kind of video I fully expect to generate some questions, so feel free to ask away in the comments below.

So what do you think of the TWSBI Classic?

Write On,
Brian Goulet