TWSBI Mini Fountain Pen in Classic Review

TWSBI Mini Classic
Fountain Pen

– Handwritten Review –

  • Review Ink: Pilot Iroshizuku fuyu-syogun
  • Review Paper: Kyokuto Cambridge 


  • Description:  An affordable, easy-posting piston-filler from TWSBI.
  • Nib: Steel nib, Fine
  • Material: Plastic with metal accents
  • Filling Mechanism: Piston Filler
  • Weight: ~20 grams filled
  • Measurements: 4.60″ closed, 5.55″ posted, 4.25″ unposted
  • Ink Capactiy: ~2ml
  • Price: $50.00 US on Amazon (affiliate link)

Handwritten Review Scans:


TWSBI Mini Classic Fountain Pen Review

Admittedly, I had written off TWSBI for a while. After a continuously cracking 540 and an inconsistent medium nibbed Vac700, I figured I’d hold off on TWSBI until they worked out some of the kinks that were widely experienced with their products. After seeing their many improvements from the 540 line to the 580 line, and the new Mini model, I had to give TWSBI another shot. The Classic color scheme (black and clear) made it that much easier to pull the trigger. Read on to see if the TWSBI Mini holds up to it’s competitors!

Appearance & Packaging:

TWSBI Mini Classic Fountain Pen Review

Unboxing a TWSBI pen is always a treat. The packaging is very “Apple-like”. It’s a white plastic base, encapsulated in clear plastic. The pen is suspended above the base on two pedestals. The plastic box is surrounded by foam and safely packed into a brown cardboard box, adorned with the red TWSBI logo in the middle. It’s really a great presentation. Onto the pen itself…The Mini is a sharp looking pen. The Classic has a black grip, cap and piston knob, with a clear barrel. It’s an awesome looking combo. My favorite part is the black grip section, that usually drives me nuts trying to keep clean on a demonstrator.

TWSBI Mini Classic Fountain Pen Review

The Mini is small, but not too small. I love the demonstrator barrel and the black with chrome accents. The red TWSBI logo on the cap adds just a splash of color that works well with the overall aesthetic of the pen. It’s a great looking little pen, and it looks awesome loaded up with some Iroshizuku fuyu-syogun.

Nib Performance & Filling System:

TWSBI Mini Classic Fountain Pen Review

I was pretty nervous for this part of the review. My first TWSBI 540 didn’t even write out of the box, and my Vac700’s medium nib skipped more than it wrote a solid line. I’m happy to say that there are zero issues with the Mini’s fine nib. It’s a bit on the dry side, but that’s not a complaint. It’s silky smooth and lays down a nice fine line. The nib on the Mini is a little bit smaller than the 5X0 and 700 series.

TWSBI Mini Classic Fountain Pen Review

The nib is a good size for the pen, and doesn’t come off as too small (I’m looking at you Kaweco Allrounder). It’s definitely one of the smoother steel nibs I have used. Before TWSBI entered the scene, a piston filler in a sub-$100 pen was a rarity. The piston operates smoothly and efficiently. It’s easy to get a full reservoir of ink, and it’s fun to fill too. A great nib and an awesome filling system…so far, so good.


TWSBI Mini Classic Fountain Pen Review

The TWSBI Mini is a smaller pen (I mean, it is called the Mini), but I wouldn’t call it miniature. Unposted, it’s a bit too small to comfortably write with. The coolest part about the feel of the mini is how the pen posts. The cap actually screws onto the back of the pen, making a super secure post that doesn’t interfere with the piston knob. The screw cap greatly helps in improving the rigidity of the pen while writing. Posting the cap makes the pen an ideal width for me. Balance is great and it’s not too light or too heavy. If you are familiar with the Sailor Sapporo, you’ll be right at home with the Mini.

They’re practically identical in size, weight, and proportion when both pens are posted. My one issue with the feel of the Mini is the metal ring at the bottom of the grip, closest to the nib. The ring has a slightly sharp edge to it, and the way I grip the pen results in some discomfort over time. Choking up on the pen a bit solves the issue, but it’s not ideal for me to change my grip to use a pen. Other than the metal ring, the TWSBI Mini feels great in hand.


  • Improved design (grip ring) prevents cracking
  • Great looks
  • Unique packaging
  • Smooth, consistent nib
  • Great value


  • The grip’s metal ring prevents cracking, but it may be uncomfortable for some.


TWSBI Mini Classic Fountain Pen Review

I would say that I am 99% happy with my TWSBI Mini. The nib is much better than the last generation of TWSBIs I’ve owned, and they have added a metal ring to the grip to prevent cracking (although it’s a bit sharp). The Mini’s great looks and feel, coupled with it’s affordable price make the Mini an awesome pen for both beginners and collectors. The Mini did a great job at changing my mind about TWSBI. The Mini is a great little pen, that I would definitely have no hesitations recommending. Good show TWSBI, good show.


8 thoughts on “TWSBI Mini Fountain Pen in Classic Review

  1. Great review Ed. The Mini must be one of the best buys I’ve made when you consider its low to moderate price and the frequency with which I use it. Good to see you’ve come around on TWSBI. Now, if I can just get along better with my 580…

    1. Thank you! I feel like there’s too much “if only I could get along with my TWSBI” going on. They’re so close to being perfect. Great value though, as long as this one doesn’t crack like my 540 did.

  2. The Mini just rules and is definitely my favorite TWSBI. Posted, it is wonderfully balanced and comfortable. Fir some reason, I like the nib on this one better than the 580. Not sure if there is much of a diference, but this one seems to write better for me.

    1. I don’t have a 580, still had a bad taste in my mouth from the Vac700/540 so I didn’t jump on it. The Mini is definitely great though, it reminds me a lot of the Sailor Sapporo, but at a fraction of the price.

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