TWSBI Classic Now Posts!

Back when the TWSBI Classic came out in January of 2014, I was really excited about the pen. So much so, I shot a whopping 5 videos on it: Intro to the TWSBI Classic Fountain PenTWSBI Classic, 580, Mini Fountain Pen ComparisonFilling the TWSBI Classic Fountain Pen from a BottleWriting with the TWSBI Classic Fountain Pen, and TWSBI Classic Disassembly and Reassembly Demonstration. Despite all that education and praise I put out there, the Classic just hasn’t been a home run. And I think a lot of that is because of one fatal flaw (that I did point out), it didn’t post. 

Well, that’s changed now. TWSBI has responded to its fans and redesigned the filler knob (end cap) to the pen with a pair of rubber o-rings to hold the cap firmly in place while it’s posted. It goes on easy, and feels secure. It’s a nice adaptation, thank you TWSBI! So basically in this video I just show you what the end cap looks like and how the pen posts. Nothing too fancy, I’ve probably talked about this pen too much already 😉 For what it’s worth, I actually think for the price, features, and overall size/design of the pen it’s actually really tough to beat. Time will tell if this new end cap will prove that in the pen community.

TWSBI’s already made this change on all Classics moving forward, so anything you buy from here on out should be the new version, check with your retailer of choice if you’re unsure. I know at we’ve got all new ones. But what about for those of you that already have the old version? Well, TWSBI is going to get a supply of replacement end caps soon, and you’ll be able to buy one for a pretty reasonable price (around $5 probably) and swap it out yourself. 

What do you think of the change?

Write On,
Brian Goulet

2017-10-11T03:58:06+00:00 September 30th, 2014|Pen News, Pen Reviews|9 Comments
  • Paul Peterson

    TWSBI was already on my wish list. I had been thinking of going with a mini. But now that the classic posts, I may have to re-think that. Thanks for the helpful demo.

  • Twoznek

    I love to post. #1 reason I didn't punch on the Classic. Classic I love as I, not a fan of the demonstrator type sry up. (Though the rose gold version is sweet). Anyhow, the posting on the classic just put it near the top! TWSBI Classic or a Shaeffer? Hmmmmm….

  • Axel

    Brian the only shop I have seen that sells the J.Herbin glow in the dark ink is

    I hope it is ok to link to them. It also remind me that I had plande to get some of that ink but got allot of bought allot of noodlers from you insted. 🙂

  • Ted

    Other people have pointed out that because the pen posts onto the end cap (instead of onto the barrel portion) which is also the plunger nob, and if you twist (accidently or otherwise) the posted cap it may/will twist the plunger nob and either draw up ink from the nib or, worse, expel it from the nib. So, yes, the pen posts, but it posts in a less than ideal way (another deal-breaker for some folks). I continue to save my "TWSBI money" for a Mini vac that, hopefully, posts better than this arrangement.

  • TJ

    Simple effective solution to the problem! I love my TWSBI pens (and their precision pencil is awesome). Thanks TWSBI and Brian for this.

  • David

    To those concerned about posting to the filler knob with the Classic:

    I have a TWSBI 580 (Rose-Gold, from Goulet Pens), my first TWSBI. I write posted all the time. The 580 is quite similar to the Classic. So I'll draw some likely parallels between the two pens…

    The TWSBI 580 posts to the filler knob like the Classic, but the filler is plastic and not metal (or metal-like?) on the Classic, and therefore there are no rubber bits involved like with the postable Classic change.

    Here are my findings about the 580 (which very well may apply to the Classic)…

    1. Posting to the filler knob isn't as "dangerous" as some may think. As long as you tighten the filler knob enough after filling, and are (minimally) careful about twisting the filler when posting and un-posting, there is really NO problem when posting.

    2. The Classic, like the 580 is a piston filler, NOT a vacuum filler. So you do NOT have to have the filler knob unscrewed (loose) a bit to write with the pen for long sessions like the Vacuum filler TWSBI 700 in order to allow air pressure to equalize.

    3. Because the cap posts to the filler-knob, like the 580, it may be that the Classic will end-up being rather top-heavy for long writing sessions. With the Classic, it really depends on how heavy the cap is and how unbalanced it makes the pen when posted. For a regular poster, I find the 580 to be way too top-heavy for long writing periods when posted. This is really the biggest concern – NOT whether the pen posts safely IMO.

    My Conclusion:

    I suspect the Classic is capable of writing posted just fine. But there are possible trade offs with the Classic if like the 580 the cap makes the pen too top-heavy.

    I would like to hear more from those that actually regularly use the TWSBI Classic posted. Again, my comments are based on the TWSBI 580.

    In the future, I do wish TWSBI would take posting more seriously in their pen designs.

    Best Regards, David

  • Matthew Newell

    Dear Brian,

    Thanks for the Open Forums! I just thought I'd throw out there–do you have any plans to do a video or tell us any more details about your thoughts on the Platinum #3776 Nice demonstrator? I know you've mentioned it here and there in several videos in the past, but I am so interested in hearing more about this pen! The 3776 Century–with that slip and seal cap–is my favorite pen; and I am really looking into the Nice version. I'd love to hear any thoughts you have about its features and changes.

  • Brooks

    For Paradox Studios, question#2: A couple suggestions: a) check the alignment of the tines, at the tip, with a loupe (say 10x). I've had many scratchy pens where simply re-aligning the tip, so that both prongs were level with each other, solved the problem. Finger pressure on the tines is sufficient, pliers can cause kinks that are hard to work out. 2) smooth the tip (after alignment) with very fine sandpaper (2000 grit, from auto paint store, or the fine products sold by Goulet). Hope this helps.

  • Tom Johnson

    Brooks, good points, I've turned scratchy nibs into smooth writers by aligning miss-aligned tines. I think that smoothing the nib on Micro-Mesh ( while holding the pen in your normal writing position might re-shape the nib a little to fit the angle you hold your pen. That is, give you a little custom shape to the tip and reduce the scratchiness. Pen tips are shaped for how the majority of writers hold their nibs when writing. A more expensive solution is to use a nib meister to custom grind the nib for your writing style and angle.